2024-03-29T09:36:46Z
https://jpp.journals.ekb.eg/?_action=export&rf=summon&issue=12878
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
INFLUENCE OF FILTER MUD CAKE FERTILIZATION UNDER LOW LEVELS OF NITROGEN ON YIELD AND ITS COMPONENTS FOR TWO SUNFLOWER CULTIVARS
Kh.
El-Aref
A.
Abo-El-Hamd
A.
Abd El-Monem
Two field experiments were conducted at the Agricultural Exp. Farm of El-Azhar Univ. at Assiut, during 2008 and 2009 seasons to study the response of two cultivars of sunflower (Sakha-53 & Giza-102), to the application of different nitrogen rates (15, 30 and 45 kg /fed) and Filter Mud Cake (FMC) (0.0, 0.5, 1.0 and 1.5 ton/fed.). The experiments were performed in a split-split plot design with three replicates where, sunflower cultivars were assigned to the main plot, while nitrogen and filter mud cake rates were distributed randomly in the sub and sub-sub plot, respectively. The combined analysis was conducted across the two seasons.
The obtained results indicated that sunflower cultivars exhibited significant differences in all studied traits except harvest index. Plants of Sakha-53 were superior significantly than Giza-102 in all studied traits i.e., head weight and diameter, shelling %, no. of seeds/head, seed index, seed yield/plant, oil and protein percentage as well as seed and oil yields/fed.
Increasing the level of nitrogen applications up to 45 kg N/fed. caused highly significant increases in all traits under study except no. of seeds/head and shelling % which did not reach the level of significance. On the contrary, harvest index and seed oil percentage decreased significantly by increasing N levels up to 45 kg N/fed.
The application of FMC to sunflower plants exerted a significant influence on all traits under study except no. of seeds/head and harvest index which did not reach the level of significance. In general, head characters, seed yield/plant, seed index and protein % as well as seed and oil yields/fed. increased by increasing the rate of FMC applications while oil % decreased with increasing the rate of FMC applications.
In general, the highest yield/fed (seed & oil) was recorded by Sakha-53 (2336.43 and 1014.59 kg/fed.) when these plants received 45 kg N/fed. and 1.0 ton FMC/fed.
2011
02
01
165
178
https://jpp.journals.ekb.eg/article_85484_a598b04db48d01026c122ec559bdcaeb.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
EFFECT OF SEED-ENVIRONMENTAL FACTORS ON GENETIC UNIFORMITY PERFORMANCE OF EGGPLANT (Solanum melongena) AND SWEET PEPPER (Capsicum annum) LOCAL CULTIVARS.
H.
Hamed
S.
Ahmed
S. S.
Ahmed
This study discussed two aspects, an economic and academic aspect. The economic aspect aimed to developing agricultural technologies is simple, low cost and low risk intervention, where poor farmers could make improvements without incurring additional costs. The academic aspect aimed to (I) studying the seed– environmental factors effect (hydro–priming as a model) on genetic variance, residual error variance, precisions of statistical testing procedures and biases the estimates of heritability which effect on selection efficiency; (II) Improving the homogeneity of eggplant and sweet pepper local cultivars by seed hydro-priming treatments; (III) Occurring of difference between protein bands caused by seed hydro-priming treatments could cause conflict of variety identifying through protein electrophoresis; (IV) Evaluate of hydro-priming effect on seed storage and viability and (V) Determine relationship between descriptive, Quantitative characteristics and rogueing (weeding out no typical individuals from a crop plants or field). To achieve these goals, eggplant and sweet pepper local cultivars were used in this study (separated experiments). Seeds were divided into five sub-samples, one of which was kept as untreated control and four other samples were incubated in distilled water at 25ºC for 12, 24, 36 and 48 hours (hydro-priming treatments). To determine the genetic parameters, the plants (for each crop) were divided into two populations, mother population and treated population. The SDS page gel was used in the separation of proteins. Results showed that (I) The seed-environmental factors (seed hydro-priming as a model) revealed changes in population homogeneity at field conditions, the best minimum values of homogeneity index (more homogenous) to most characteristics were obtained by 48h seed-priming treatment in eggplant local cultivar. While in the pepper, the best minimum values of homogeneity index to characteristics of seedling stage were obtained by 48h seed hydro-priming treatment; besides, the best values in case of vegetative, flower and yield stages were obtained by 24 seed hydro-priming treatment; (II) The hydro-Priming treatments (as seed-environmental factor) had effected the results of trait performance and led to changes in residual error variance, which reduces the power of statistical tests and biases the estimates of heritability. These results could lead to reducing selection efficiency; (III) Rogueing practice is reliable only in the case of descriptive traits; (IV) seed-environmental factors (seed hydro-priming as a model) led to specific differences related to induce proteins. This suggests that the use of the electrophoretic pattern was able to distinguish within the close together population as affected by seed–environmental factors and (V) These results indicated that the seed storage period was not critical for eggplant local cultivar seeds affected by hydro-priming treatments up to 18 months, while in case of sweet pepper local cultivar was up to 12 months.
The results had revealed that there a very tight relationship between the environmental factors related to seeds and the plant phenotypic and genotypic performance which reflected on the yield and efficiency of genetic parameters that playing a big role in determining the efficiency of line selection.
Eggplant
sweet pepper
hydro-priming
Homogeneity
selection efficiency
Electrophoresis
rogueing
2011
02
01
179
212
https://jpp.journals.ekb.eg/article_85488_54d13abcce15b28b9279fc16fdb53886.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
GENE ACTION AND COMBINING ABILITY IN TOMATO (Lycopersicon esculentum MILL.) BY LINE X TESTER ANALYSIS
A.
Kansouh
A.
Zakher
This investigation was conducted to study the possibility of improving some tomato traits. In this respect, during successive early summer seasons of 2008 – 2010 at Zifta distract, Middle- Delta Region, a line x tester analysis was made in tomato (Lycopersicon esculentum Mill.) with eleven femal parents (breed lines) and three male parents (testers) to determine the components of genetic variance, gene action and combining ability effects for some growth and fruit characters. All studied traits, i.e., plant height, main stem length, number of primary branches and leaves, early and total yield, as well as, average fruit weight, firmness, total soluble solids (TSS%) and vitamin C content of fruit have closer values of σ2g and σ2p. The G.C.V. and V.C.V%, which was confirmed by the estimated of G.C.V./P.C.V. ratios (ranged from 0.91 to 0.99) and broad sense heritability (h2bs) values (ranged from 0.85 to 0.98), suggesting less effect of environmental and the large portion of σ2p was due to the σ2g on these traits.
The magnitude of variance due to general and specific combining abilites were highly significant indicating the importance of the additive (σ2A) and non-additive (σ2D) gene actions. However, the ratios of σ2GCA/ σ2SCA (<1) and σ2A/σ2D (<1) revealed the preponderance of non-additive variance in the inheritance of all the studied traits. The estimated average degree of dominance (0.76 and 0.90) revealed partial and complete dominance for average fruit weight and TSS % content, respectively, while revealed over-dominance (>1) for the remaining traits. The parental lines G.16, S.65, G.30 and the tester G.19 were found to be the most desirable general combiner (they possessed dominant genes) for seven, six, five and six traits, respectively. The cross combinations S.60 x G.19, S.125 x G. 19, G.30 x SSB and G.30 x Peto 86 considered the best specific combinations since showed significant SCA values for five traits. The results also suggested the possibility of improvement of these tomato traits through recurrent selection and hybrid breeding program.
2011
02
01
213
227
https://jpp.journals.ekb.eg/article_85489_8c12f60549a5e20019f776f01b61498e.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
EFFECT OF FOLIAR APPLICATION WITH AMINOTOTAL UNDER DIFFERENT RATES FROM NITROGEN FERTILIZER ON SEED AND FIBER QUALITY OF GIZA 86 COTTON CULTIVAR.
A.
El-Gabiery
E.
Mesbah
Two field experiments were carried out at Gemmeiza Agricultural Research Station, Gharbia Governorate during two seasons (2008 and 2009) to study the effect of four aminototal concentrations (i.e without, 1g/L, 2g/L and 3g/L) under three N rates (15, 30. and 45 Kg N/fad.) and their interaction on leaf chemical composition, seed and fiber quality of the Egyptian cotton cultivar, Giza 86. Results indicated that the differences between N rates for leaf N content, seed index, protein and oil % were significant, where, lint %, micronaire reading and pressley index were insignificant in the two seasons. Rate of N fertilizer 45 kg N/fad. gave the highest values for leaf N content, seed index, protein and oil %, while, 30 kg N/fad. gave the highest values for leaf k content in the both seasons. Foliar application of aminototal gave a significant effect on leaf N and K contents, seed index, protein and oil %, on the other hand, lint %, micronaire reading and Pressley index were insignificant in the two seasons. Foliar cotton plants with 3g/L or 2g/L concentration from aminototal gave the highest values of most studied attributes. The interaction between N rates and aminototal concentrations were significant for most studied traits except lint %, micronair reading and Pressley index in the two seasons. Also, results show that, fertilization cotton plants with 30 kg N/fad. and sprayed with 2 g/L aminototal improved the fiber and seed quality under the experiment soil conditions.
Cotton
nitrogen fertilizers
Amino acids
Amino total
Clay loam
2011
02
01
229
237
https://jpp.journals.ekb.eg/article_85491_43969aba89a5ca7114e54691a3b760d0.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
NATURAL LOCAL MEDIA AND THEIR EFFECT ON WATER REQUIREMENTS OF Ficus “HAWAII”
F.
Saadawy
B.
Rezk-Alla
A.
El-Fouly
This study was carried out in the nursery of the Ornamental Plant Research Department, Horticulture Research Institute, Giza, Egypt during the period from February to November of the two successive seasons of 2009 and 2010. A factorial experiment, in a randomized complete block design (RCBD), with three replicates, was conducted, to investigate the effects of different watering regimes (irrigation with 300, 450 and 600 cm3/pot/week) comprising the main plot and potting media (peat moss, water hyacinth compost, rice hulls compost, date palm leaf compost and a mixture of the four components at equal volume parts) representing the sub-plots on Ficus nitida “Hawaii” plants grown in 25 cm dia. plastic pots.
Results show that performance of plants grown in the mixed compost and watered with 450 cm3/pot/week was the best in all characters studied, followed by plants grown in the same medium and watered with either 600 cm3/pot/week (in the second position) or with 300 cm3/pot/week (in the third one). Performance of plants grown in rice hulls compost and watered with 450 cm3/pot/week came in the fourth rank, followed by those grown in peat moss and watered either with 450 or 600 cm3/pot/week, occupying the fifth position in this concern. In contrast, plants grown in date palm leaf compost and watered with 300 cm3/pot/week scored the lowest records in almost all parameters studied, preceded by those grown in the same medium and watered either with 450 or 600 cm3/pot/week.
watering regime
potting media
peat moss
water hyacinth compost
rice hulls compost and date palm leaf compost
2011
02
01
239
263
https://jpp.journals.ekb.eg/article_85496_daf183c5086abdae634d52c9d07162a0.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
POTENTIAL OF LEUCAENA HEDGES FOR FOOD CROP PRODUCTION IN SOUTHERN EGYPT
A.
Ebeid
Mona
Abbas
E.
Ali
Maize (Zea mays L.) var.Giza 151 was intercropped for 2008 and 2009 seasons between hedgerows of leucaena ( Leucaena leucocephala L.) spaced 3 or 5 m apart, while maize was planted in hills 40 cm apart in rows spaced 75 cm, in loamy sand soil at Kom-Ombo Tropical Farm, Aswan Botanical Garden, Hort. Res. Inst., Agric. Res. Center, Egypt. The leucaena was cut at a height of 30 or 60 cm, 2 or 3 times per season and the fresh prunings spread as a mulch between the rows of maize. The yield of maize from mulched plots was measured and compared with that from plots fertilized with nitrogen as urea at 0, 30 or 60 kg N/fed.year. In the two seasons, leucaena dry yield was significantly affected by leucaena mulch treatments with the highest values 1131.28 g/ m row and 6787 g/ plot were due to 30 cm height and two cuts per season for hedgerow spacing of 3 m, while the lowest values 723.9 g/ m row and 4343.6 g/ plot were recorded with the 60 cm height, 3 cuts, 5 m treatment. However, the effect of leucaena pruning treatments was differed for N and protein contents in leucaena leaves, while the concentrations of N and protein were increased by using 30 cm height and 3 cuts per season of 5 m spaced leucaena. On the other hand, 60 cm height with two cuttings/ season in 5 m spaced leucaena increased cellulose content in leucaena prunings compared to the other treatments. Higher maize yields were obtained with supplementation with 60 kg N/ fed. Addition of leucaena prunings was able to sustain maize yields at moderate levels, for two consecutive years with no N addition. Addition of leucaena prunings improved soil fertility as increment of organic matter percentage and decreased the values of pH and E.C in the soil. (the results which are mentioned at the means of to seasons )
Alley cropping
Leucaena leucocephala
Zea mays
Pruning management
nitrogen fertilizer
2011
02
01
265
277
https://jpp.journals.ekb.eg/article_85498_106bfd4f248d667e489ea9deb65351fd.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
EFFECT OF SEED RATES AND NITROGEN FERTILIZATION LEVELS ON YIELD AND QUALITY OF SUGAR CANE
N.
Shalaby
A.
Osman
Ranya
Abdel Aziz
Two field trails were carried out at El-Mattana Agricultural Research Station (Luxor Governorate) to study the performance of sugarcane G.84-47 variety grown as plant cane in 2008/2009 and 2009/2010 seasons and the 1st ratoon crops in 2009/2010 under two seed rates of 1.5 and 2.0 rows of cane cuttings (12600 and 16800) of three-budded cane cuttings, i.e. 37800 and 50400 buds/fed and three nitrogen fertilization levels of 150, 180 and 210 kg/fed, respectively. A split plot experimental design with four replications was used, where the main plots were assigned for seed rates while nitrogen levels were distributed in the sub plots.
The results showed that, seed rates differed significantly, where 50400 buds/fed recorded the highest values of stalk height, sucrose%, purity%, sugar recovery%, millable cane/fed, cane and sugar yields/fed in the plant cane and 1st ratoon crop, respectively. While, seed rate 37800 buds/fed recorded the highest values of stalk diameter, brix% and impurities% in the plant cane and 1st ratoon crops.
Increasing nitrogen fertilizer level up to 210 kg N/fed given to G.84-47 recorded the highest values of stalk height, number of millable cane/m2 and cane yield, which increased sugar yield/fed. whereas, 180 kg N/fed recorded the highest mean values of stalk diameter, sucrose%, purity%, sugar recovery%.
The interaction between nitrogen levels 210 kg N/fed with 50400 buds/fed attained the highest mean values of cane and sugar yields (ton/fed) in the plant cane and 1st ratoon crop.
Under conditions of this work, adding 210 kg N/fed with seed rate 50400 buds/fed can be recommended to obtain the highest cane and sugar yields.
2011
02
01
279
287
https://jpp.journals.ekb.eg/article_85499_3b763de8ab56a798e0e1f7f5eb41e123.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
PERFORMANCE OF TWO PROMISING SUGAR CANE VARIETIES UNDER DIFFERENT HARVESTING DATES
M.
Osman
A.
Allabbody
A.
Osman
Tow field experiments were carried out at Mallawi Agricultural Research Station, Minia Governorate grown as plant cane in 2008/2009 and 2009/2010 seasons and the 1st ratoon crops in 2009/2010 to investigate three harvest dates at ages of (10, 12 and 14 months) on the performance of two promising sugar cane varieties G.99-80, G.99-160 and the commercial variety G.T.54-9 as a control. A split plot design with four replications was used in both seasons. Harvest dates treatments were allocated in the main plots while sugar cane varieties were randomly distributed in the sub plots.
The results showed that harvest date up to 14 months recorded the highest values of stalk height, weight kg/plant and cane yields/fed in plant cane and 1st ratoon crops over the other two harvest dates.
Sugarcane varieties differed significantly, where G.99-80 variety recorded the highest stalk height, weight kg/plant, cane and sugar yields in the plant cane and 1st ratoon crop over the other two varieties., in respectively. G.99-160 variety surpassed G.99-80 and G.T.54-9 varieties in brix% in plant cane in both seasons and 1st ratoon crop. G.T.54-9 surpassed in stalk diameter, sucrose% and sugar recovery%.
The interaction between sugar cane variety G.99-80 and 14 months harvest date in 1st plant cane and 1st ratoon crop to obtain the highest cane yields. Under conditions of this work, 14 months for the plant cane and the 1st ratoon crop of G.99-80 variety grown at Mallawi represent Middle Egypt can be recommended to obtain the highest cane and sugar yields/fed.
2011
02
01
289
296
https://jpp.journals.ekb.eg/article_85503_51835ae2f4dfd83d6c7a0e9ceb1bd70a.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
PERFORMANCE OF TWO PROMISING SUGAR CANE VARIETIES UNDER DIFFERENT INTERROW SPACING.
A.
El-Labbody
A.
Osman
M.
Osman
The present investigation was carried out at Shandaweel Agricultural Research Station, Sohag Governorate to study the performance of the two promising sugar cane varieties grown as plant cane in 2008/2009 and 2009/2010 seasons and the 1st ratoon crops in 2009/2010 under three row spacing of (80, 100 (the recommended) and 120 cm) and two promising sugar cane varieties, G.98-28, G.99-160 beside G.T.54-9 the commercial variety. A split plot design with four replications was used in the plant cane and 1st ratoon crops. Row spacing treatments were allocated in the main plots, while, sugar cane varieties were randomely distributed in the sub-plots.
The results showed that: Increasing row spacing up to 120 cm recorded the highest values of stalk height, diameter, brix%, sucrose%, purity%, no. of millable canes/fed, sugar recovery%, cane and sugar yields/fed in the plant cane and 1st ratoon crops compared with the other two spacing.
Sugarcane varieties differed significantly, where G.98-28 variety recorded the highest stalk height, sucrose%, purity%, no. of millable canes/fed, sugar recovery%, cane and sugar yields/fed in the plant cane and 1st ratoon crops over the other two varieties. G.T.54-9 variety surpassed G.98-28 and G.99-160 varieties in stalk diameter, brix% in the plant cane and 1st ratoon crops.
The interaction between G.98-28 variety and 120 cm interrow spacing in 1st season plant cane and 1st ratoon crops obtained the highest cane and sugar yields/fed.
Under this conditions, 120 cm row spacing for the plant cane and the 1st ratoon crop of G.98-28 variety grown at Shandaweel, can be recommended to obtain the higher cane and sugar yields/fed.
2011
02
01
297
305
https://jpp.journals.ekb.eg/article_85511_1e3b33b1618ea8efd7b1fec083a3e318.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
EVALUATION OF SOME RICE (Oryza sativa L.) GENOTYPES UNDER WATER STRESS CONDITIONS
A.
Abd El-Lattef
Aml
El-Saidy
W.
El-Kallawy
A.
Mady
Laboratory experiment was conducted at Seed Technology Research Unit in Mansoura, Dakahlia Governorate, Field Crop Research Institute Agricultural research center to evaluate germination and seedling growth of fifty-one rice genotypes under water stress conditions induced by 20% of polyethylene glycol 6000. Also, Field experiments were carried out at Sakha Farm Station, Kafr El-Sheikh Governorate during 2009 and 2010 seasons to evaluate the same fifty-one rice genotypes under flashing water irrigation every 12 days. The results indicated that 20% of PEG solution inhibited all seedling characters in the most of rice genotypes. Giza 178, Sakha 104, Sakha 101, Sakha 102, Rb 10, IET 353, Bala, Cica 4 Giza 172, Giza 181, Bl 1, Mizuho, Yabani M 52, Suweon 351, Suweon 353, BG 367 and Co 39 were superior than IET 1444 (control) in root , shoot lengths and seedling weight. The aforementioned rice genotypes not more affected by PEG therefore, more resistance to water deficit. Also, the highest number of panicles/plant, 100-grain weight, grain yield/plant, the lowest values of panicle length and sterility % were resulted from Giza 178, Sakha 101, Sakha 102, Sakha 104, IET 353, Cica 4, Bala, Giza 181 and Co 39. Genotypic and phenotypic coefficients of variation (GCV and PCV) were found to be high for most of studied characters. Broad- sense heritability estimates ranged from moderate to high for all studied characters. High expected genetic advance was associated with high heritability. High heritability values coupled in number of filled grains/panicle, plant height, germination %, days to 50% heading and grain yield/plant. These characters showed to be highly heritable, points to the predominance of additive gene effect, easily fixable and can be taken as unit characters for effective selection. Also, high genetic advance with high heritability, lead to conclude that effectiveness of selection of most studied traits, might be practiced in the advanced generations. Grain yield/plant was strongly phenotypic positively correlated with germination %, root and shoot lengths, seedling vigor index and seedling weight. The results showed that the amount of added water to the genotypes studied ranged from 4012.63 to 4819.17 m3/fed. The m3 of water gave the highest of grain yield in Bala, Giza 178, Sakha 104, Sakha 101, Yamgdoeg, Giza 181, Sakha 102, Sakha 103, IET 353, TKY 104, Co 39, Bl 1, Yabani M55, GZ2447-5-7 and Cica 4 followed by IET 1444(780, 770, 760, 740, 710, 710, 700, 700, 690, 690, 680, 650, 630, 610, 580 and 580 g/m3, respectively). It could be concluded that rice genotypes under study is considered the best parents for drought recovery ability and could be considered as a donor in crossing with drought tolerance to cover the growing rice area which affected by water shortage in the terminal of irrigation canal.
rice
Germination
seedling vigor
genotypes
Water deficit
Genetic variability
yield
2011
02
01
307
326
https://jpp.journals.ekb.eg/article_85516_f342347cb41d5242b44714d5ee811cb3.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
EMBRYOGENIC CALLUS INDUCTION OF SOME SUNFLOWER (Helianthus annuus, L.) GENOTYPES UNDER In vitro SALT STRESS
M.
Keshta
Nemat
Hassan
Klara
Azzam
Olfet
Hassanin
Response of three genotypes of sunflower (Helianthus annuus, L.) to callus induction and embryogenic callus production under in vitro salinity conditions were studied. For callus induction, hypocotyls were subjected to in vitro culture on Murashige and Skooge (MS) medium supplemented with 1.0 mg Naa + 0.3 mgBa /L. The aims of this study was design to evaluate salt tolerance of the sunflower genotypes, growing calli were exposed after two subsequent subcultures (4weeks each) to different concentrations of Nacl (0, 50,75, 100, 125, 150 and 175 mM/L) added to the culture medium for 4 weeks. Comparison of genotypes was based on callus induction percentage, embriogenic callus production percent and relative fresh weight growth (RFWG). The necrosis percentage and relative fresh weight growth of callus were studied to evaluate callus salinity tolerance. The responses of genotypes to callus induction were 78, 89 and 60% for Sakha 53, Giza 102 and Par- 1617-1 genotypes, respectively. The high percentage of embryogenic callus obtained for the three varieties indicated that sunflower genotypes have a high capacity for embryogenic callus production. Nacl effect resulted in calli necrosis and a reduction of their growth. However, growing calli derived from varieties Giza 102 and Par-1671-1 showed less percent of necrosis and less relative fresh weight growth reduction under salt stress up to 100 m M/L, but they appeared to be more salt tolerant in vitro than Sakha 53 , Par-1671-1 was the most salt tolerant under 125 and 150 mM/L Nacl. The study proved that callus growth and salinity tolerance were genotype independent.
callus induction
embryogenic callus
necrosis
in vitro salt tolerance
sunflower genotypes
2011
02
01
327
333
https://jpp.journals.ekb.eg/article_85524_46954944fb79c21fe33af9aed5d20c13.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
GENETIC DIVERGENCE AND HETEROSIS IN LINSEED (Linum ussitatissimum L. )
A.
Kandil
A.
Sheraif
T.
Abo-Zaied
A.
Gamil
Cluster analysis can be used to identify cultivars with similar adaptation, which can be useful for sampling in subsequent studies and parental selection in hybridization breeding programs Twenty-one flax genotypes differed in their origin and purpose were used in this study. Sixteen agronomic and yield characters were evaluated. Analysis of variance revealed significant differences for all studied characters indicating the presence of considerable amount of genetic variability. The variation due to parents, crosses were also significant for presence of most characters. Parents vs crosses were significant for most characters, indicating the heterotic effects. Significant positive heterosis over mid-Parents, better parent and commercial cultivars were observed for seed yield/fed, number of apical branches/plant and number of capsules/plant. The crosses exhibited heterosis for seed yield also showed significant heterosis for most yield components characters. The cross combination Sakha 3 x Gowhar surpassed all genotypes for oil content. The 85% of dissimilarity coefficients were significant.
The Twenty-one parents were grouped into seven major groups based on relative dissimilarity among them with significant differences between groups for most characters. The maximum distance observed between cluster V and VII, whereas the minimum distance between cluster III and VI. The forty one genotypes were grouped into ten clusters, while most F1 combinations were distributed on seven differed clusters indicating that the progeny produced from crossing between two distantly related parents showed divergent distance and gave values surpassed their parents in most characters.
genetic divergence
Heterosis
Linseed
2011
02
01
335
349
https://jpp.journals.ekb.eg/article_85527_154962803532dc9ab414cca119ea426e.pdf
Journal of Plant Production
2090-3669
2090-3669
2011
2
2
GENETIC PARAMETERS FOR SOME YIELD AND YIELD COMPONENTS CHARACTERS IN FOUR CROSSES OF BREAD WHEAT UNDER TWO WATER REGIME TREATMENTS
M.
Sultan
A.
Abd El-Latif
M.
Abdel-Moneam
M.
El-Hawary
Six populations; P1, P2, F1, F2, BC1 and BC2 of four bread wheat crosses were used in this study to determine quantitative genetic parameters for yield and its components characters under normal and water stress treatments. The means of the six generations were recorded for plant height, spikes number plant-1, grains number spike-1, 100-grain weight and grain yield plant-1 in four crosses namely; Line 1 × Sakha 93, Line 1×Sakha 94 , Sakha 93×Gemmiza 9 and Sakha 94 × Gemmiza 9 generated from four diverse parents. The experiment was carried out in 2006/2007 to 2008/2009 seasons at Sakha Agric. Res. Station, ARC. The means of the four crosses significantly decreased under the water stress treatments for yield and its components characters as the effect of water stress at most cases. The T-test of differences between parents of each cross under each treatment showed highly significant values in most cases in the four studied crosses under both treatments. The results showed the importance of additive gene effects in the inheritance of plant height and spikes number plant-1, while, additive, dominance and epistasis were the important in the inheritance of grains number spike-1, 100-grain weight and grain yield plant-1 at most cases under both normal and water stress treatments. Moreover, additive genetic variance played the greatest and the important role in the inheritance of plant height, spikes number plant-1 and grain yield plant-1 at most cases under both water treatments. On the other hand, dominance genetic variance was the greatest and the important in the inheritance of grains number spike-1 and 100-grain weight at most cases under both water treatments. On the other side, heritability in broad sense had medium to high percentages for all studied characters at all cases under normal and water stress treatments. Meanwhile, heritability in narrow sense had moderate to high values for yield and yield components characters at most cases under both water treatments, except grains number spike-1 which had low values at most cases under both water treatments. Genetic advance under selection was low for plant height at most cases under both water treatments. While, it was high for spikes number plant-1 and grain yield plant-1 at most cases under both water treatments. Also, it was founded to be low to high for plant height, grains number spike-1 and 100-grain weight at most cases under both water treatments.
Bread wheat
Water stress
Generation Mean Analysis
gene action
components of variances
heritability
2011
02
01
351
366
https://jpp.journals.ekb.eg/article_85531_a95fa4d266c11c9a15a6ec332c7cb9ec.pdf