2024-03-28T13:40:37Z
https://jpp.journals.ekb.eg/?_action=export&rf=summon&issue=17865
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF POTASSIUM FERTILIZATION ON SOME NEW FODDER BEET VARIETIES AT SOUTH SINAI
A.
Abd El Lateef
Two field experiments were carried out at Ras-Sudr Research Station, DesertResearchCenter, during 2002/2003 and 2003/2004 growing seasons, to study the effect of potassium fertilization on growth characters, yield and its components and chemical compositions of three fodder beet varieties.
The results revealed that:
1- Significant differences were obtained between the three varieties under study in growth, yield, its components and chemical compositions. The polyaurea, D.L. variety attained the highest values in growth and yield characters. While, the lowest values were obtained from Gent balance variety. It could be concluded that the polyaurea, D.L. variety of fodder beet is more adapted under saline condition South Sinai.
2- Raising potassium concentration added as spraying or soil application caused gradually increasing in growth as well as forage yield characters .
3- The highest values of crude protein and carbohydrate as well as potassium contents in tops and roots were obtained by using polyaurea,D.L.variety and 72Kg.K2O/fed.
4- N and K contents were higher in top than in root, they reached to maximum values by the interaction treatment of polyaurea,D.L.variety x 72Kg.K2O/fed.
5- Crude protein and carbohydrate contents were higher in root than in top and reached to it highest values by the interaction treatment of polyaurea,D.L.variety x 72Kg.K2O/fed.
2009
09
01
8905
8914
https://jpp.journals.ekb.eg/article_118804_398c69bb969b6f77f8fb6b375ad16ba8.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF FOLIAR APPLICATION WITH UREA ON FLOWERING, RUITING AND LEAF NITROGEN CONTENT OF VALENCIA ORANGE TREES.
M.
El-Tanany
M.
Abdel Messih
Foliar application with urea at 1.5% or 3.0% foliar urea in mid-December and/or mid-January to Valencia orange trees budded on Volkameriana rootstock, increased the number of flowers/branch, fruit set/branch and number of fruits/tree.The data also reveal that average of fruit weight, length and yield of trees which sprayed in mid-January with 1.5% urea solution was higher than the control but Friut diameter was affected, only in the second season, by different urea treatments. Juice volume per fruit also showed an increase for most urea treatments. SSc, total acidity and Vit. C were also affected by urea applications leaf nitrogen and ammonium contents were also increased as a result of sprayed trees with winter urea.
2009
08
01
8915
8926
https://jpp.journals.ekb.eg/article_118832_4c30fd5b2a275a5e0e6a10a3f83b49fa.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF STORAGE METHODS AND PERIODS ON GERMINATION OF ONION SEED
A.
Kandil
A.
Leilah
A.
Mostafa
F.
Hassan
Two laboratory experiments were conducted at Gemmeiza Agriculture Research Station (Gharbeia Governorate) to study the effect of both storage and methods of storage on viability of onion seed during the period from August 2006 to August 2008. Randomize Complete Blocks Design with three replications was used.
The results clearly showed that :
1- There was a progressive decline in germination percentage with each increase in the storage period. The decline in germination percentage after 12 months was 10.36 % and 21.42 % after 24 months. Seed germination percentage was markedly affected by methods of storage. Utilizing of polyethylene bags under Frigidaire at 5-8 ºC or freezing resulted in higher seed germination percentage. There was a significant interaction effect of period and method of storage. The higher percentage of germination was observed under the treatment of storage period for 4 months in paper bags without and additions under normal room conditions.
2- Germination rate (days) was markedly affected by storage period, but differences between treatments were not always significant. There are a progressive increase in number of days to complete germination with each increase in storage period. Germination rate was significantly affected by storage method. The fastest rates of germination were observed with storage of onion seed in polyethylene in normal room conditions.
3- Seedling length was markedly affected by storage period. Storage at 4 and 8 months were associated with highest length of seedlings i.e . 3.85 and 3.84 cm), respectively. Seedling length was markedly affected by storage method. The maximum seed length (3.84 cm) was observed with storage of seed in polyethylene bags without any additions under normal room conditions
It can be concluded that storage onion seed for four months in paper bags in normal room conditions followed by burlap bags in normal room conditions gave the best results in germination percentage and other seedling parameters.
2009
08
01
8927
8933
https://jpp.journals.ekb.eg/article_118834_6b9b0ffa33e747906139060a78288d24.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
STUDIES ON PRODUCTION OF SOME HOT PEPPER (Capsicum annuum L.) HYBRIDS.
T.
El-Gazzar
E.
Tartoura
M.
Nada
This experiment was carried out at the special farm in El-maia, Dikirnis District, Dakahlia Governorate, Egypt, during 2005 to 2008 seasons. The genetic materials used in the present investigation included two cultivars (F1 hybrid). The two hybrids belonging to (Capsicum annuum L.) which were selfed for five generations during 2005 to 2007 in summer and winter of each season consecutive, to obtain six inbred lines, these lines were called as P1, P2, P3, P4, P5 and P6 which were used in half diallel cross mating design to obtain 15 F1 hybrids. The original populations, inbred lines and their F1 hybrids were evaluated for some economic traits; vegetative growth, flowering, fruit, yield and its component as well as quality traits in field trial during summer 2008 season. The obtained results showed that the highest values recoded in the F1 hybrids compare with original populations and inbred lines were; i.e., P1xP2 and P1xP6 for earliness; P2xP5 for fruit set percent; P2xP6 and P5xP6 for early yield per plot; P3xP4 for total yield per plot; P2xP5 and P1xP2 for total fruit number per plant. As well as, quality traits; i.e., P2xP3, P1xP2 and P1xP3 for total soluble solid in green fruit, P1xP2 and P1xP4 in red fruit; P3xP4, P3xP6 and P4xP6 for ascorbic acid in green fruit, P3xP6 for ascorbic acid in red fruit; P2xP3 and P1xP3 for carotene content in green fruit. However, P1xP2 was the best in red fruit. These crosses could be used in breeding program according to their objectives. Moreover, some of these F1 hybrids can be used as commercial cultivars which may competate with imported hybrids.
2009
08
01
8935
8947
https://jpp.journals.ekb.eg/article_118835_fd478b8016cd2032c69ef7cc812cbf13.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
INFLUENCE OF DIFFERENT STRAWBERRY TRANSPLANT ORDERS ON TRANSPLANT PRODUCTION, YIELD AND FRUIT QUALITY UNDER LOW PLASTIC TUNNELS
Amany
Attia
A.
Omran
This study was carried out during 2007/2008 and 2008/2009 seasons in two experiments. The first was conducted to investigate the effect of four strawberry nursery mother plant orders, i.e., nucleus, foundation, registered and certified and two promising cultivars, i.e., Tamar and Festival on number and quality of transplants in the nursery. The second experiment aimed to study the same treatments on yield and fruit quality using transplants derived from the above mentioned orders and cultivars. A split plot design was adopted.
Results of the first experiment indicated that nucleus plant order showed the highest values of number of transplants/plant, number of roots and crown diameter/transplant. Plants derived from foundation order exhibited the highest values in crown diameter and root length. Also, plants derived from certified order showed the highest root length. As for the cultivar effect, Tamar cultivar showed higher significant values in number of transplants/plant and number of roots than Festival, while Festival plants indicated significant increases in root length and plant height as compared with Tamar. Results of the interaction showed that nucleus plants of Festival cv exhibited the highest values of number of transplants while plants derived from nucleus Tamar showed the highest values of root length and transplant height.
Results of the second experiment indicate that transplants derived from nucleus order showed the lowest values of early yield while those derived from foundation order exhibited the highest values of fruit firmness and total acidity. The highest early and total yields as well as total soluble solids were produced from plants derived from registered order. Results showed also that Festival cv, showed higher values of early and total yield and total acidity than Tamar while Tamar fruits indicated higher total soluble solids and ascorbic acid than Festival.
The interaction show that plants derived from registered Festival cv gave the highest values of early and total yield while the heaviest fruits were harvested from plants derived from nucleus Tamar cv. The study conclude that it could be recommended to use registered plants (the second generation from tissue culture plants) of Festival to obtain high early and total yield for local market also with high acidity and firmness for export markets.
strawberry
plant material order
cultivars
Transplant production
yield
fruit quality
2009
08
01
8949
8963
https://jpp.journals.ekb.eg/article_118836_ad859eb717d85b4ebf2387898f3519e7.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
INFLUENCE OF MINERAL FERTILIZER, ORGANIC FERTILIZER AND BIOFERTILIZERS ON GROWTH, YIELD AND QULITY OF POTATO (Solanum tuberosum, L.).
Kawsar
Dawa
A.
Bazeed
Two experiments were conducted during the two successive seasons of 2001/2002 and 2002/2003 at a private farm near El-Mansoura -Dakahlia Governorate, Egypt to investigate the effect of mineral fertilizers, organic fertilizers (i.e. compost , rock phosphate ) and phosphorus soluble bacteria (PSB) (Bacillus megaterium var. Phosphatium) on the plant growth, yield, and chemical constituents of potato tubers (cv.Slaney). This study was laid out in a randomized complete block design with 8 treatments, three replicates were used.
Obtained results could be summarized as follows:
- Mineral fertilizer(NPK) treatment recorded the highest values of vegetative growth characters and yield characters follwed with mineral fertilizer (NK) and compost plus rock phosphate or PSB either alone or in combinations. The lowest values of vegetative growth parameters were recorded with application of compost alone. Concerning chemical composition and quality parameters, the highest values of N,Pand K percentages were found in the mineral fertilizer treatments, while the lowest values of nitrate and nitrite concentration(ppm) were recorded with compost treatments either alone or in compination with rock phosphate and PSB also recorded higher values of specific gravity,starch %,T.s.s.% and ascorbic acid(mg/100g fresh weight) in both seasons.
2009
08
01
8965
8974
https://jpp.journals.ekb.eg/article_118838_102427f0526615bd2caf0d1023416f11.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF BIO-FERTILIZERS AND ASCOBENE ON GROWTH AND FLOWERING OF Iris tingitana CV. WEDGWOOD L. PLANTS.
M.
El-Khateeb
Amal
Nasr
A.
Fahmy
Hagar
Hussien
This study was carried out at the Expermental.Nursery of the Ornamental. Hort., Dept., Fac of Agric.,Cairo Univ., Giza,during two seasons of 2000/2001 and 2001/2002,to investigate the effect of bio-fertilizers and ascobene on growth, flowering and chemical composition of Iris tingitana cv.Wedgwood, L.The bulbs were planted on October 14th 2000 in 30 cm.clay pots filled with a mixture of clay/sand (2:1 v/v) (3 bulbs/pot).Bio-fertilizer solutions of Azospirillium lipoferum and Bacillus megatherium , phosphorene , nitrobacterene and rizobacterene as well as biostmulant ascobene were applied to plants after two months from the planting and then (twice) at 21 days intervals as a soil drench. The results revealed that using phosphorene and ascobene were the best treatments for increasing the plant height. Treating Iris plants with biofertilizers significantly increased the formation of leaves dry weight of plants and the inflorescence stem diameter and length as well as fresh weight of inflorescence. Treating plants with Bacillus megatherium , phosphorene as well as ascobene significantly increased the dry weight of inflorescence. The treatment of Bacillus megatherium and Azospirillum lipoferum proved the superiority for producing the largest bulbs, bulblets and fresh weight of bulbs. Whereas, phosphorene,Azospirillum lipoferum and rizobacterene had a favourable effect on increasing the dry weight of bulbs. The treatment of Bacillus megatherium , rizobacterene as well as ascobene produced the highest content of chlorophylls.All biofertilizers increased N-percentage in leaves and bulbs.Treating the plants with rizobacterene, nitrobacterene, Azospirillum lipoferum or Bacillus megatherium increased P percentage in bulbs. Most of the biofertilizer treatments increased K content in bulbs. The treatment of nitrobacterene and phosphorene resulted in a great increase in the percentage of total carbohydrates content in leaves and bulbs.
2009
08
01
8975
8987
https://jpp.journals.ekb.eg/article_118843_d26560fb58ff8d398ca58ca53edfd198.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF N-SOURCES ON GROWTH AND CHEMICAL COMPOSITION OF Dieffenbachia maculata CV."EXOTICA”
M.
El-Khateeb
Amal
Nasr
Amal
Hagag
Abla
Dorgham
This study was carried out at the greenhouse of Ornamental Hort. Depart, Fac. of Agric.,Cairo Univ.,during two seasons : 2002 and 2003 to investigate the response of Dieffenbachia maculata cv."Exotica” to some nitrogen sources.On 3rd March, 2002 and 2003, uniform terminal rooted cuttings (4 leaves and 20 cm height) were planted in 18 cm plastic pots filled with a mixture of peat moss + sand + perlite (4 : 2 : 1 v / v / v).The fertilizer treatments of N-sources were applied, as a soil drench at the rate of 1gm N./pot,at 2-week intervals, starting from 15 th April and were continued till 15 th November. The results revealed that the tallest plants were obtained when amm. nitrate, amm. sulphate and their mixture were used as N-sources. These N-sources also increased the formation and dry weight of leaves and length as well as fresh weight of the roots. amm. nitrate gave the thickest and the heaviest stems. The combined treatment of amm. sulphate + amm. nitrate was the most effective in increasing the area and fresh weight of leaves. The application of amm. sulphate or amm. nitrate markedly increased the percentages of chlorophyll-a and b, whereas, the percentage of total carbohydrates in the leaves was greatly increased to amm. sulphate, calcium nitrate or urea. All N-sources increased the N- percentage of leaves and amm. sulphate was the most effective. Fertilizing the plants with calcium nitrate increased the accumulation of P in leaves. The treatments of amm. nitrate, urea and the mixture of amm. nitrate + amm. sulphate gave the highest accumulation of K in leaves.
2009
08
01
8989
8999
https://jpp.journals.ekb.eg/article_118849_2ed66d6a7ee1aaac3082771525396f97.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
CULTURAL AND MANUAL WEED MANAGEMENT IN SESAME
H.
Saudy
W.
Abd El-Momen
Two field experiments were conducted at the Research and Experimental Station Farm, Faculty of Agriculture, Ain Shams University at Shalakan, Kalubia Governorate, Egypt, during 2006 and 2007 growing seasons to study the response of three cultivars (Toshka, Shandawel-3 and Shansawel-4) of sesame yield and the associated weeds to four weed management practices (adding false irrigation followed by light hoeing with either two hoeing {W1} or without hoeing {W2} as well as without adding false irrigation with either two hoeing {W3} or without hoeing {W4}), and two sowing methods (drilling seeds in ridges or in rows). Data revealed that W1 or W2 exceeded W3 or W4 for reducing dry weights of broadleaf and total weeds at 3 WAS. Moreover, W1 recorded the lowest dry weight values of broad leaf and total weeds (at 6 and 12 WAS) and grassy weeds (at 12 WAS), while W3 gave the minimal dry weight of grassy weeds (at 6 WAS). W1 was the best practice for enhancing plant height, capsules number and weight/plant, seeds weight/plant, weight of 1000 seeds, oil % as well as biological, seed and oil yields/fed.
Broad leaf and total weeds (at 12 WAS) showed the minimal dry weight when sesame plants were grown in ridges than in rows. While, sowing methods had no significant effect on sesame yield and its components as well as oil % and yield/fed.
At 12 WAS, Shandawel-3 along with Shandawel-4 was less infested with grassy and total weeds recording the minimum dry weight values. Shandawel-3 was the potent cultivar for producing the highest values of plant height, capsules and seeds weight/plant as well as biological, seed and oil yields/fed.
W1 x ridges x Shandawel-3 combination possessed the least dry weight at all stages, and recorded the highest values of seeds weight/plant, seed yield and oil yield/fed.
Seed yield of the three tested cultivars, i.e. Toshka, Shandawel-3 and Shandawel-4 was correlated negatively and highly significant with dry weight of total weeds (at 6 and 12 WAS). Plant height, capsules number and weight/plant and seeds weight/plant of the three cultivars were correlated positively and highly significant with seed yield.
Finally, it could be recommended that the combination of false irrigation followed by light hoeing and accompanied with hoeing twice at 25 and 45 days from sowing of sesame c.v. Shandawel-3 that was sown in ridges is the best practice for weed suppression and higher yield potentiality.
sesame
weeds
sowing methods
cultivars
2009
08
01
9001
9013
https://jpp.journals.ekb.eg/article_118851_8dccc9de80b5cc2dda3f04c92c9f2ddb.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
RESPONSE OF TWO NEWLY DEVELOPED CORN GENOTYPE (Zea mays, L) TO SOME TRACE ELEMENTS UNDER SALT STRESS THROUGHOUT THEIR GROWTH LIFE SPANE: 1- MORPHOLOGICAL AND GROWTH CHARACTERS
M.
Helaly
A.
Arafa
R.
Fouda
H.
Esmail
Two pot experiments were carried out at the greenhouse and laboratories of the Agricultural Botany Department, Faculty of Agriculture, Mansoura University, Egypt during the two seasons of 2002 and 2003 to study to what extent the experimented treatments of some trace-elements applied either as a spray or as a soil feeding may improve salt tolerance and reduce of salt induced necrosis in maize plants; Zea mays, L. Two newly cultivars were chosen; Bachaier 13 single cross and TWC 310 denoted cultivar (1) and cultivar (2), respectively.
Four levels of artificial saline sea water having E.C. values of 0.36, 2.5, 5 and 7.5 dsm-1 were used and denoted control, low, high and highest level respectively. Zn, Fe and /or Mn trace-elements were investigated. The experiments were laid out as a factorial complete randomized block design system with 8 replication, four of them were used for the morphological as well as growth characters and analyzed statistically.
The general observation was the higher values of growth parameters in cultivar (1) than those obtained with cultivar (2) throughout the experimental period during the two growing seasons.
The plants in the two cultivars were growing slowly under salinity and were dwarfing, stunting, inferior in size and unhealthy in general appearance. The effect of salinity was more pronounced in cultivar (2) than cultivar (1). Plants were shorter, thin and the rate of leaf production and leaf size were much reduced. Plants showed obvious changes in colour if compared to the control plants. As the salinity level increased the stunting was more noticeable; the leaves of the two cultivars become dull coloured, often bluish-green, and frequently coated with a waxy deposit. Plants of cultivar (2) failed to grow up to the 2nd sample; tassiling stage, under salinity even at 2.5 dsm-1.
With respect to the power of survival which is taken as a criterion of salt tolerance, it was found that cultivar (2) plants could not tolerate any level of salinity even at 2.5 dsm-1, while cultivar (1) plants tolerate salinity up to 5 dsm-1 and died only at the level of 7.5 dsm-1.
Salinized plants started to bloom earlier than did in the control in cultivar (1). Such effect was increased with an increase in salinity level and amounting to 5-7 days at the 7.5 dsm-1. The effects of trace-elements indicated that Zn, Fe and/or Mn, especially Zn treatments, improved growth of the two cultivars during the two growing seasons. The proven efficiency of these elements was more pronounced in cultivar (1) plants than did in cultivar (2) and depending on the salinity levels.
The interactions treatments indicated that, micronutrients treatments counteracted the harmful effect of salinity on cultivar (1) plants compared with the corresponding control. Therefore, the treated plants tolerate salinity up to the highest level of salinity; 7.5 dsm-1. In cultivar (2) plants, Zn treatments only improved their tolerance but up to the high level; 5 dsm-1 only whereas other nutrients failed to improve the plants to grow under the salt stresses used, since the salinized plants died before tasseling stage.
corn
Maize
salinity
trace-elements
2009
08
01
9015
9036
https://jpp.journals.ekb.eg/article_118854_8eff95de80231186e995dbb9cf844742.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF NITROGEN RATES AND ITS TIME OF APPLICATION ON PRODUCTIVITY OF SUGAR BEET UNDER SPRINKLE IRRIGATION IN NEWLY RECLAIMED SOILS
E.
Mahmoud
M.
Masri
Two field experiments were conducted at Sedment El-Gabal location, Beni-Sweif Governorate during 2007/2009 seasons to study the response of sugar beet yield and some of its attributes under sprinkle irrigation to different N rates; 100, 120, 140 and 160 kg N/fed and its time of application viz., split application in two equal doses, at 4- and at 8-leaf stage, or in three equal doses,1/3 at 4- leaf stage, 1/3 at 8-leaf stage and 1/3 three weeks later, or dividing the rate into 4 equal doses and added 1/4 at 4- leaf stages, 1/4 at 8- leaf stage, 1/4 three weeks later and 1/4 three weeks after the last. A split plot design with four replications was used, where N rates were allocated in the main plots and time of N application was distributed at random in the subplots.
Results obtained from this study revealed that increasing N rates from 100 up to 160 kg N/fed significantly increased root weight by 16.52% and 24.77%, number of plants at harvest by 4.05 and 2.89 thousand plants/fed and root yield by 7.22 and 8.34 tons/fed in the first and second seasons, respectively. Excessive N rate lowered beet quality in terms of sucrose content, juice purity and extractable sucrose. Extractable sugar yield increased by increasing N rates from 100 to 120 Kg/fed. Such increase amounted to 29.08 % in the first season and 31.97 % in the second one. Additional increasing in nitrogen rate beyond 120 kg N/fed had no significant effect on sugar yield.
Splitting N rate into 4 equal doses significantly increased weight of individual root and number of plants/fed at harvest. Late N application in favour of N splitted into 4 doses gave the highest root yield/fed. On the other hand, early application and splitting N in two equal doses at 4-and at 8-leaf stage improved beet quality traits in terms of sucrose %, purity % and extractable sucrose %.
Splitting 160 kg N/fed into 4 equal doses gave the highest root yield, while splitting 120 kg N/fed into 4 equal doses was recommended for high sugar yield/fed.
Beta vulgaris L
Sprinkle irrigation
N rate
time of application
Quality traits
sugar yield
2009
08
01
9037
9048
https://jpp.journals.ekb.eg/article_118855_81ebe1768cf8511ea45753cbda3111eb.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
EFFECT OF SPRAYING SOME MINERAL NUTRIENTS AND METHANOL ON BERRY SUNBURN AND BUNCH ROT IN REDGLOBE GRAPEVINES
Y.
Omran
M.
Shoieb
F.
El-Morsy
Field experiments were conducted during 2005 and 2006 on 7-year-old grapevines cv. Redglobe grown in a clay loamy soil at 1.5x3 meters, used flood irrigation trained to double cordon with a load of 60 buds per vine ( 20 fruiting spurs: 3 buds / spur) pruning was carried out at the third week of January of each season to examine the effect of foliar sprays of some micro nutrients and methanol on berry sunburn and bunch (berry) rot in seeded Redglobe. Leaf content of chlorophyll a, b and carotenoids increased after spraying Ca, Zn, Cu and methanol. Foliar application of methanol increased bud burst percentage, all treatments significantly improved vegetative growth of the vine. Maximum yield weight and biggest bunch components resulted from methanol application (25%) compared to the control. Untreated vines gave the highest percentage of infected berries whether sunburn or rots (16.24 % per vine). Spraying Ca, Zn, Cu and their combination or methanol reduced percentage of infected berries by about (84, 88, 90, 82.4 and 88% respectively).All treatments increased total soluble solids (TSS %) and TSS / acid ratio; while, total acidity decreased. Application of Ca had no effect on anthocyanin content of berry skin; however, the rest of treatments increased anthocyanin content. Total carbohydrates in canes and weight of prunings per vine were increased by all treatments. There was a strong significant positive correlation between yield weight: weight of prunings and percentage of infected berries (r2 = 0.930).Most of the positive effects resulted form spraying 20% methanol.
Table grape
fruit quality
yield
Micronutrients
Methanol
sunburn
bunch rot
2009
08
01
9049
9061
https://jpp.journals.ekb.eg/article_118856_7b17d7ca59b3b2f433be1b948f117af9.pdf
Journal of Plant Production
2090-3669
2090-3669
2009
34
8
دراسات فسيولوجية على تأثير هرمون الکينتين في بادرات السنا (السيسبان) Senna occidentalis النامية تحت ظروف ملح کلوريد الصوديوم
الجوهرة
الشبيب
محمد
باصلاح
يتناول هذا البحث دراسة تأثير الإجهاد الملحي على إنبات ونمو نبات السنا Senna occidentalis ودراسة تخفيف الآثار السلبية للإجهاد الملحي باستخدام هرمون الکينتين kinetin بترکيزات مختلفة. وقد أوضحت نتائج الدراسة أن الترکيز المنخفض(0.001 مول) من ملح کلوريد الصوديوم NaCl يؤدى الى زيادة غير جوهرية في محتوى المواد الأيضية في نباتات السنا المعاملة, بينما انخفض محتوى المواد الأيضية ً في النباتات المعاملة بترکيز الملح المرتفع (0.01 مول) . ومن جهة أخرى وجد أن معظم المواد الأيضية زاد محتواها عند إضافة هرمون Kinetin إلى الترکيزات المختلفة من الملح مما يدل على دور الهرمون في تخفيف التأثير المثبط للملح. ادت المعاملة بالترکيز المرتفع (0.01 مول من NaCl) الى زيادة کل من المحتوى البروليني ونشاط إنزيم الرايبونيوکلييز في النباتات المعاملة وانخفض في النباتات المعاملة بهرمون Kinetin منفرداً أو مجتمعاً مع NaCl. إنخفض محتوى العناصر (+K ، 2+Ca ، 2+Mg ، Fe+3) انخفاضاً کبيراً في نباتات السنا المعاملة بترکيز 0.01 مول من NaCl ، بينما لم يکن هناک تأثيراً جوهريا في النباتات المعاملة بالترکيز 0.001 مول من NaCl ، وزاد محتوى عنصر Na داخل النبات بزيادة ترکيز الملح في التربة. وأدت إضافة هرمون Kinetin مع الملح أو بدون الملح إلى زيادة محتوى العناصر السابقة مع نقص في محتوى عنصر Na مقارنة بالنباتات غير المعاملة.
2009
08
01
9063
9080
https://jpp.journals.ekb.eg/article_118857_5e11e4273aaa39cd3442286e68f49d94.pdf