ORIGINAL_ARTICLE
Inheritance of Resistance against Phytophthora Infestans in Wiled Tomato Genotype (Lycopersicon hirsutum l03684) وراثة المقاومة للندوة المتاخرة في الترکيب الوراثي البري L03684 التابع للنوع Lycopersicon hirsutum
Many varieties commercial's tomatoes have been grown in Egypt but most of them susceptible to the disease of late blight, which are very important and most dangerous fungal diseases that destroy the tomato crop in all its parts caused by the disease Phytophthora infestans. The L03684 wild tomato genotype was obtained from the Asian Development Center for Vegetables. The inter specific cross between L03684 and Edkawi species was done to obtained the six populations and study resistance of Late blight heredity, and assessment of genetic parameter for resistance. Results showed that, Many genes control the heredity of resistance to P. Infestans and resistant is inherited as a quantitative trait. While, susceptibility to late blight is a dominant characteristic of resistance. The heritability in broad (Hb.s%) estimates were 71.8 and in narrow sense (Hn.s %) estimates were 39.35% for severity detect the proportion of the environmental factors on the total variation. the inheritance of resistance to P. infestans greatly affected by dominance gene effects. While that, gene effects of estimations were low. So the effects of gene refers to epistasis more important than the additive. This study showed that, the inter actions between additive and dominance were highly significant in the inheritance of resistance to P. infestans. One of the best methods to breeding to improve this resistance by the reciprocal recurrent selection.
https://jpp.journals.ekb.eg/article_58154_2ccdc5e0bd7b2b3e8be792b3142e7b29.pdf
2019-08-01
675
679
10.21608/jpp.2019.58154
سمير
العفيفي
1
قسم الخضر والزينة - کلية الزراعة جامعة المنصورة – مصر
AUTHOR
وهبه
السيد
2
محطة بحوث بساتين الخضر بالمنصورة - معهد بحوث البساتين - مرکز البحوث الزراعية- مصر
AUTHOR
وليد
السعدي
3
قسم الخضر والزينة - کلية الزراعة جامعة المنصورة – مصر
AUTHOR
بولا
عبد الملک
4
محطة بحوث بساتين الخضر بالمنصورة - معهد بحوث البساتين - مرکز البحوث الزراعية- مصر
AUTHOR
ORIGINAL_ARTICLE
Effect of some Preharvest Treatments on Fruit Drop, Quality and Shelf Life of "Anna" Apple Fruits تاثير بعض معاملات ما قبل الحصاد على تساقط الثمار والجودة وحياة الرف لثمار التفاح صنف الأنا
This work was carried out during 2018 and 2019 seasons for studying the effects of pre-harvest treatment by Aminoethoxyvinylglycine (AVG), 1-Naphthaleneacetic acid (NAA), P-Coumaric acid and Lyso–phosphatidylethanolamine (lisophos) on preharvest drop, fruit quality and fruit shelf life of ‘Anna’ apple fruit. Seven treatments used as foliar application of AVG at 300 ppm, AVG at 300 ppm plus P-Coumaric acid at 50 mM or lisophos at 400 ppm, NAA at 20 ppm, NAA at 20 ppm plus P- Coumaric acid at 50 mM or lisophos at 400 ppm and water application as a control were applied. Results showed that application of AVG or AVG plus lisophos reduced preharvest fruits drop and increased yield, fruit firmness, acidity, starch and chlorophyll (a, b) contents as compared with control and other treatments in both seasons. On the other hand, fruit weight, size, length and diameter were increased by NAA or NAA plus lisophos relative to the control and other treatments in both seasons. Also, spraying NAA followed by P-coumaric acid significantly increased fruit drop%, SSC, total sugars and anthocyanin contents but decreased fruit firmness during both seasons. Concerning shelf life period, all preharvest of AVG treatments significantly decreased the loss % of firmness, fruit weight loss, fruit decay %, SSC and anthocyanin contents compared to other treatments. it could be concluded that, pre harvest foliar application with AVG at 300 ppm alone or followed by lisophos at 400 ppm reduced preharvest fruits drop % and fruit decay % and increased yield and fruit firmness. Thus, both treatment are recommended for apple growers to obtain the best yield and prolong the handling season with acceptable fruit coloration.
https://jpp.journals.ekb.eg/article_58155_aff2d1a40c67a4968edab67104827b66.pdf
2019-08-01
681
688
10.21608/jpp.2019.58155
Apple
AVG
NAA
lisophos
P- Coumaric acid
fruit drop
fruit quality
shelf life
حاتم
قطب
1
قسم بحوث الفاکهة متساقطة الاوراق ، معهد بحوث البساتين ، مرکزالبحوث الزراعية– الجيزة ،مصر
AUTHOR
ORIGINAL_ARTICLE
Application of Biostimulants and Gibberellic Acid Improves the Growth, Flowering and Corm Production in Gladiolus grandiflorus L. المعاملة بالمنشطات الحيوية وحمض الجبريلليک تحسن من نمو وازهار وانتاج الکورمات في نبات الجلاديولس
Improving the growth and productivity of flower bulbs via biostimulants is a very imperative topic. Therefore two field experiments were conducted during 2016/2017 and 2017/2018 seasons to investigate the efficacy of moringa leaf extract (MLE), seaweed and/or GA3 treatments on improving the growth, flowering and corm production of gladiolus. MLE was extracted and diluted at a ratio of 1:30 (v:v). Seaweed was applied at 1g/L. Moreover, the applied concentrations of GA3 were 0, 50, 100 and 150 mg/L. The growth characters and flowering attributes were significantly improved compared with the control due to MLE or seaweed as a solely treatment or even in combination with GA3 concentrations in both experimental seasons. The productivity of corm and cormlets was also enhanced by using both biostimulants and/or GA3 application. Furthermore, the chemical analysis indicate that N, P, K, total chlorophyll and total carbohydrate content were increased in gladiolus leaves treated with MLE or seaweed and/or GA3 treatments in both seasons. Conclusively, MLE, seaweeds and/or GA3 applications enhanced the growth characters flowering attributes and corm production of gladiolus. The most effective treatment was MLE and GA3 at 100 mg/L. MLE and seaweeds may be applied as a promise and ecofriendly plant growth stimulants to modulate the growth and productivity of gladiolus.
https://jpp.journals.ekb.eg/article_58157_df5f37412d375806b07c1de8084e97ec.pdf
2019-08-01
689
695
10.21608/jpp.2019.58157
راجيا
مزروع
1
قسم البساتين – کلية الزراعة – جامعة المنوفية
AUTHOR
ORIGINAL_ARTICLE
Environmental Hazards and Agronomic Benefits of Organic and Inorganic Nitrogen Fertilization to Sandy Soils Monocropped with Radish. المخاطر البيئية والفوائد الزراعية للتسميد النيتروجيني العضوي وغير العضوي للأراضي الرملية المزروعه بالفجل.
Application of organic in combinations with inorganic N fertilizers can supply plants with all necessary nutrients in slowly available forms without environmental pollution. Vegetable field trials were conducted under controlled greenhouse conditions for two successive seasons using radish as a catch crop in order to evaluate environmental hazards and agronomic benefits of applying different combinations of organic and inorganic N fertilizers to sandy soil. Over both seasons of this study, improvements in growth quality parameters of radish plants were in most cases not significantly different at the higher fertilizer application rates of 120 and 180 kg ha-1. This finding indicates that radish response as a catch crop owing to the increasing of fertilizer application rate is subjected to diminishing returns, beyond which further additions will not improve the yield but pollute soil environment.Results of this research showed that, major considerations in applying of inorganic N fertilizers alone on sandy soils monocropped with catch crops are the increase in residual nitrate in soils, the increase in groundwater contamination potentials by nitrate, and the threat of nitrates build-up in plant tissues. Under conditions of this study, high application rates of inorganic nitrogen fertilizer (180 kg ha-1) caused high levels of nitrate accumulation in radish, and on being consumed by human beings, pose serious health hazards. In general, at the rate of 120 kg ha-1 equal combined organic and inorganic fertilizers, no health problems could be foreseen to humans or animals from food chain movement of nitrates. From this research it could be concluded that incorporation of combined organic and inorganic fertilizers into sandy soil monocropped with catch crops at the rate of 120 kg ha-1 nitrogen using drip irrigation system was the best management strategy practice to reach optimum agronomic benefits while minimizing environmental and health hazards.
https://jpp.journals.ekb.eg/article_58159_1fab174ca2322e26391c052f239520fb.pdf
2019-08-01
697
706
10.21608/jpp.2019.58159
Catch crops
Nitrate pollution
Environmental hazards
إسماعيل
طنطاوي
1
قسم البساتين – کلية الزراعة – جامعة المنيا
AUTHOR
مصطفي
هاشم
2
المعمل المرکزي للزراعة العضوية- مرکز البحوث الزراعية-الجيزة- مصر
AUTHOR
محي الدين
عبدالعظيم
3
قسم الأراضي والمياه – کلية الزراعة – جامعة المنيا
AUTHOR
ORIGINAL_ARTICLE
Maize Grain Yield and its Quality as Affected by Previous Crop, Nitrogen Rate and Nutrients Foliar Application تأثير المحصول السابق ومعدلات التسميد النيتروجيني والرش الورقي بالعناصر المغذية على محصول الذرة وجودة حبوبه
Two field experiment was conducted to evaluate effect of preceding winter crop (Wheat and Egyptian clover), nitrogen levels (90, 120 and 150 kg N/fed.) and foliar minerals application (control, potassium sulphate, and micro-nutrient compound as well as their interaction) were carried out at Exp. Stat., Fac. Agric., Cairo Univ., Egypt during 2015 and 2017 growing seasons. Analysis of data showed that all parameters of Zea mays L. cv. single cross 131 significantly increased grain protein, carbohydrates and oil contents. The highest values of the previous parameters were obtained when maize was preceded by Egyptian clover, while the lowest ones were noticed after wheat. Results indicated that protein, carbohydrates and oil contents of maize grain and grain yields markedly increased with the increase in N rates from 90 to 150 kg /fed. The maximum value of protein, carbohydrates, oil contents as well as, their yields/fed. were recorded with foliar application of micronutrients + potassium. Results also indicated that maize grown after Egyptian clover and Micronutrients + K sulfate foliar application recorded maximum grain protein content (10.1 and 10.6 %), grain carbohydrate content (63.0 and 68.5%) and oil content (10.0 and 9.9 %) in both seasons, respectively, as well as, recorded maximum protein yield/fed. (0.364 and 0.389 ton) and oil yield/fed. (0.359 and 0.360 ton) in both seasons. Maize grown after Egyptian clover and received 120 kg N/fed. combined with nutrients foliar application of potassium sulphate and micro-nutrients are recommended for high maize grains, protein, carbohydrates and oil yields. On the other hand, maize grown after wheat and received 150 kg N/fed. and nutrients foliar application of potassium sulphate + micronutrients resulted in producing the maximum maize grain, protein, carbohydrates and oil yields.
https://jpp.journals.ekb.eg/article_58160_750d92b321de3e081e3ec1caef3f8242.pdf
2019-08-01
707
714
10.21608/jpp.2019.58160
Maize
Nitrogen rates
potassium
Micronutrients
foliar application
Grains
protein
Carbohydrates and Oil yield
المتولى
المتولى
1
قسم المحاصيل- کلية الزراعة- جامعة القاهرة
AUTHOR
سيد
سفينه
2
قسم المحاصيل- کلية الزراعة- جامعة القاهرة
AUTHOR
فؤاد
عبدالله
3
قسم تکنولوجيا التسميد- المرکز القومى للبحوث
AUTHOR
ساره
الصاوى
4
قسم تکنولوجيا التسميد- المرکز القومى للبحوث
AUTHOR
ORIGINAL_ARTICLE
The Role of Amino Acids, Potassium and Selenium in Improving Growth of Eucalyptus citriodora Hook Plants and their Tolerance to Forest دور الأحماض الأمينية، البوتاسيوم والسيلينيوم في تحسين نمو نباتات الکافور الليموني (Eucalyptus citriodora Hook) وزيادة تحملها للبرودة أو الصقيع
This study was undertaken in the open field at the nursery of Hort. Res. Inst., ARC, Giza, Egypt during the winter of 2016/2017 and 2017/2018 seasons to find out the effect of some fertilization treatments, which were: foliar spraying with aqueous solution of amino acids mixture at the rate of 1 g/l (T1), T1 + soil drenching with potassium sulphate (K2SO4) at 2 g/plant (T2), T1 + sodium selenate (Na2SeO4) as foliar spray at 1 g/l (T3), T2 + Na2SeO4 as foliar spray at 1 g/l (T4) and foliar spray with tap water only (as control) on growth, chemical composition and tolerance of one-year-old seedlings of Eucalyptus citriodora Hook. grown in 25-cm-diameter plastic pots filled with about 4 kg of sand + clay soil mixture (1:1, by volume) to winter months. The treatments were applied 2 times every month in a complete randomized design. The obtained results showed that means of the different growth parameters; expressed as: plant height, stem diameter, No. leaves/plant, root length, as well as fresh and dry weights of stem, leaves and roots were significantly increased as a result of applying the various treatments mentioned above relative to control means in the two seasons. However, the dominance was for the sole treatment of amino acids (T1) that gave the highest values over the combined treatments in both seasons. A similar trend was also obtained regarding the leaf content of chlorophyll a, b, carotenoids, total soluble sugars and total carbohydrates, as T1 treatment attained the highest records of such constituents, with few exceptions. However, the opposite was the right concerning the leaf content of N, P and K, where N % slightly decreased by T1 treatment, but increased to maximum by T2 one. As for P and K % recorded the highest by T4 treatment. Hence, it is enough to spray the foliage of E. citriodora plants cultivated in 25-cm-diameter plastic pots with the aqueous solution of amino acids mixture at the rate of 1 g/l, once every 15 days in winter months for keeping well growth and better quality plants.
https://jpp.journals.ekb.eg/article_58162_d9d11f0fc3a2140d5e11e2c900b66e1e.pdf
2019-08-01
715
719
10.21608/jpp.2019.58162
Eucalyptus citriodora
fertilization treatments
Amino acids
potassium sulphate
sodium selenate
ريم
سعيد
1
قسم بحوث الحدائق النباتية، معهد بحوث البساتين، مرکز البحوث الزراعية، الجيزة، مصر
AUTHOR
سيد
شاهين
2
قسم بحوث الحدائق النباتية، معهد بحوث البساتين، مرکز البحوث الزراعية، الجيزة، مصر
AUTHOR
ORIGINAL_ARTICLE
Influence of Colchicine Treatment on Morphological, Physiological and Anatomical Cercis siliquastrum L. Seedlings Growth تأثير معاملة الکولشيسين على النمووالصفات المظهرية و الفسيولوجبة و التشريحية لشتلات الأرغوان
The present study was conducted to assess the effect of polyploidy induction on different properties of Cercis siliquastrum plant. Experiment was conducted in RCBD with 15 treatments and 3 replications. The seeds were treated with 0.0, 0.5, 1.0, 1.5 and 2.0 % colchicine solution at room temperature for various exposure times 12, 24 and 48 h. Observations on morphological variations were recorded on each plant in each treatment. Various in seed germination, morphological and growth characteristics observed due to effects of interactions between colchicine concentration and soaked period. By increasing of the colchicine concentration the seed germination rate decreased significantly from 80% to 50%, the effects on seed germinate were most evident at the higher colchicine concentrations (1.5 to 2.0 %). Longer stem and root, thicker stem and root diameter, higher number of leaves, branch and roots per transplant, were width area, thick and greener leaves, variable anatomy wood stem were achieved and development as compared to control plants. The length and width of stomata (21.6 and 10.3µm) respectively were significantly increased and induced in 0.1% of colchicine for 48h, whereas stomata density was decreased to 68 per area in 0.2% of colchicine at 48h. in contrast with initial diploid plants. However 1.5 % and 0.2% concentrations of colchicine at different soaked time were more effective for producing variation in plants. These polyploids plants may be helpful for further development and improvement of ornamental tree.
https://jpp.journals.ekb.eg/article_58165_b6f26fb7307884d7d4480b2161eb0e61.pdf
2019-08-01
721
730
10.21608/jpp.2019.58165
Cercis siliquastrum L. variation, colchicine, polyploid breeding
stomata characteristics
هشيار
سليمان
hishyar.suliman@uod.ac
1
قسم الغابات- کلية علوم الهندسة الزراعية - جامعة دهوک
AUTHOR
هاجر
أسکندر
hajar.askandar@uod.ac
2
قسم المحاصيل الحقلية - کلية علوم الهندسة الزراعية - جامعة دهوک
AUTHOR
ORIGINAL_ARTICLE
Effect of Iron and Zinc Foliar Application and Plant Spacing on Productivity of Oil Lettuce (Lactuca scariola var. Oleifra) in Calcareous Soils تاثير الرش الورقى بالحديد والزنک ومسافات الزراعة على انتاجية خس الزيت بالأراضى الجيرية
Field trials were carried out during 2016/17 and 2017/18 growing seasons at Mariout Experimental Station, Desert Research Center, Egypt, to investigate the effect of foliar application with iron and zinc (control, 150 mg iron /L, 100 mg zinc /L and 150 mg iron + 100 mg zinc /L) and different plant distances (10, 20 and 30 cm between plants) on growth, yield and yield components as well as oil content of prickly oil lettuce under calcareous soil conditions. The experimental design was a split plot, whereas the main plots involved iron and zinc treatments and the sup main plots involved plant distances. The obtained results cleared that iron and zinc foliar application significantly affected on all traits, except number of branches/plant and harvest index, also plant spacing significantly affected on all traits, except plant height and 1000-seed weight during the two seasons, respectively. The interaction between iron and zinc foliar application and plant spacing had significant effects on all traits as an average for both seasons. Foliar application of iron and zinc together as a combination treatment caused an increase in all yield traits as compared with untreated plants in both seasons. Increasing the distance between plants from 10 to 20 and/or 30 cm significantly decreased seed yield/fad and seed yield/plant in both seasons. Oil percentage was increased when plants were transplanted at 20 cm a part. However, the oil yield was gradually decreased by increasing the distance between plants up to 30 cm. In general oil lettuce plants which treated by150 mg iron + 100 mg zinc /L and transplanted at 10 cm a part produced the highest values of seed and oil yield.
https://jpp.journals.ekb.eg/article_58167_fc37cf8e5a50a716bcf04c570d50b3a9.pdf
2019-08-01
731
737
10.21608/jpp.2019.58167
Oil lettuce
yield
Quality
plant spacing
iron and zinc application
محمد
قناوى
1
قسم الإنتاج النباتى - شعبة البيئة وزراعات المناطق الجافة - مرکز بحوث الصحراء - مصر.
AUTHOR