Mansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Yield and Quality of some Sugar Beet Varieties as Affected by Humic Acid Application Rates under Sandy Soil Condition79179611801710.21608/jpp.2020.118017ENF. F. BAbu-EllailSugar Crops Research Institute, Agricultural Research Center, 12619 Giza, EgyptK. A. SadekSugar Crops Research Institute, Agricultural Research Center, Giza, Egypt.E. H. S. El-LaboudySugar Crops Research Institute, Agricultural Research Center, Giza, Egypt.Journal Article20200901A field experiment was conducted at privet farm of Demo (29° 17ˋ N, 30° 53ˋ E), Fayoum Governorate, Egypt, during 2018/2019 and 2019/2020 to study the effect of three humic acid treatments, i.e. (0 without humic acid as control, 3.5 and 7 Kg humic acid/fed) on quality and yield traits of eight sugar beet varieties (Santolhne, Pepite, Amina, Beta 401, Dina, Grinta, Sirona and Bts 302). Results indicated that root yield (ton/fed) was increased by increasing the rates of humic acid from 3.5 to 7kg per fed in the first season (27.02 and 29.11 ton/fed, respectively), corresponding (28.08 and 29.72 ton/fed in the second season respectively). Similarly, the content of molasses forming substances showed more reduction in 3.5 than in 7kg/fed treatment. Nevertheless, the trend of increasing content of sucrose and refined sugar was associated with humic acid rates. Results showed that varieties significantly differed among them where, Sirona variety show the superiority over the other seven tested varieties and recorded the highest values of root diameter (14.19 and 15.14 cm, respectively), fresh root weights/plant (1.41 and 1.47 kg, respectively), in both seasons, as well as root yield/fed (29.94) in 2<sup>nd</sup> season. While, in first season variety (Bts 302) registered the highest values of root yield (29.42 ton/fed), also this variety recorded the highest sugar yield (4.62 and 5.23 ton/fed, respectively) in both seasons. Highly significant interaction effects between humic acid and varieties root yield and sugar yield and their related traits in both seasons. it could be concluded that fertilization with humic acid at a rate of 7kg /fed as a soil application to get the maximum of root and sugar yields/fed in sandy soil.https://jpp.journals.ekb.eg/article_118017_fcb4d6aad5708a15e8e19da2c7da9cb7.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Effect of Foliar Spray with Calcium and some Antioxidants on Growth, Yield and Yield Quality of Potato79780311802010.21608/jpp.2020.118020ENA. H. A. EL-MorsyVegetable Res. Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt.H. M. B. El-MetwalyVegetable Res. Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt.E. M. El-SaidVegetable Res. Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt.Journal Article20200902Two field trials were conducted on potato plants cv. Spunta, in the vegetable private farm at Kafr Meet Faris, Dakahlia Governorate, during two winter seasons of 2017/2018 and 2018/2019 to study the influence of foliar spray with calcium (0, 1000, 1500 and 2000 ppm) and some antioxidants (control, Ascorbic acid at 300 ppm, boric acid at 100 ppm and Salicylic acid at 50 ppm) in additions to their interaction on plant growth, yield and its components as well as chemical constituents in tuber.In general, all the studied characteristics were better in plants sprayed calcium compared with the control treatment. Plant length, number of main stems/plant, number of leaves/plant, leaf area and foliage dry weight/plant, total tubers yield, marketable tubers yield, tuber dry weight, the tuber content of N, P, K, starch and TSS were increased with increasing calcium level up to 2000 ppm.Foliar spray with antioxidants led to significant increases of the vegetative growth characteristics and enhanced total yield and its components as well as chemical constituents in tuber. Foliar spray with boric acid at 100 ppm have the highest records in all studied characteristics followed by Salicylic acid in both seasons.The positive interactions between foliar spray calcium levels and foliar spray with antioxidants were often observed.The best results were obtained by plants sprayed calcium at the level of 2000 ppm and boric acid followed by Salicylic acid.Therefore, this treatment could be recommended for raising potato yield and improving tuber quality of potato under such conditions of this study.https://jpp.journals.ekb.eg/article_118020_64806781735f98e33c0d14aa90199044.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Effect of Intercropping Faba Bean with Sugar Beet on Yield and Yield Components under Salt Affected Soils Conditions80581211802210.21608/jpp.2020.118022ENAmira A. A.El-MehyCrop Intensification Research Department, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt.A. S. ShamsCrop Intensification Research Department, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt.Y. E. El-GhobashiCrop Intensification Research Department, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt.Journal Article20200903The field trial was conducted at El-Serw Agricultural Experiments and Research Station, A.R.C., Damietta Governorate, during 2017/2018 and 2018/2019 seasons to study the effect of intercropping faba bean plant densities (33.3, 25.0 and 16.7%) with three sugar beet varieties namely; Glorius (Z), Lilly (N) and Cleopatra (E). The study was performed to optimize yield and quality of sugar beet and seed yield of faba bean, maximize land usage and raise farmer’s income. Split-plot design with three replications was used. Results showed that sugar beet varieties significantly differed in yield and its attributes as well as sucrose % in both seasons, except root length in the first season and sugar yield fed<sup>-1</sup> in both seasons. Cleopatra variety had the highest values of all the studied traits compared to the other sugar beet varieties, except sugar yield fed<sup>-1</sup> and sucrose %. Intercropping faba bean with sugar beet at low plant density 16.7% significantly increased yield and its attributes for sugar beet, and vice versa for sucrose % in both seasons. The interaction between sugar beet varieties and faba bean plant densities significantly affected leaf area index (LAI), root diameter, root and sugar yields fed<sup>-1</sup> and sucrose % in both seasons and other traits significantly affected in one season. Intercropping faba bean with Glorius variety had the highest yield and its attributes of faba bean comparison to those intercropping with other varieties in both seasons. Yield attributes of faba bean significantly increased by decreasing faba bean plant density from 33.33 to 16.7%, while the converse was hold true for plant height and seed yield fed<sup>-1</sup> in both seasons. All studied traits of faba bean were not affected significantly by the interaction between sugar beet varieties and plant densities of faba bean in both seasons, except plant height in second season. The total land equivalent ratio (LER) and relative crowding coefficient (RCC) values were greater than one in all the studied treatments providing advantages of intercropping faba bean with sugar beet has advantages. Faba bean was dominant crop. Intercropping faba bean plants at 25% plant density with Glorius variety had the highest LER (1.29 and 1.33) and MAI (3449 and 4267) in both seasons. https://jpp.journals.ekb.eg/article_118022_262d097e731411bfb1204cce29d0577a.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Performance and Stability of some Bread Wheat Genotypes across Terminal Water and Heat Stresses Combinations Using Biplot Techniques81382311802410.21608/jpp.2020.118024ENY. M. FeltaousWheat Research department-Field Crop Research Institute- Agricultural Research CenterY. S. I. KoubisyWheat Research department-Field Crop Research Institute- Agricultural Research CenterJournal Article20200904The current study was conducted at Shandaweel Agric. Res. Stat., Agric. Res. Center, Egypt. Eighteen bread wheat genotypes were grown under four treatments during 2018/19 and 2019/20 seasons. The treatments were (1) normal conditions (sowing on 25<sup>th</sup> November and 5 irrigations). (2) Terminal water stress conditions (sowing on 25<sup>th</sup> November and 3 irrigations). (3) Terminal heat stress conditions (sowing on 25<sup>th</sup> December and 4 irrigations). (4) Combined stresses (sowing on 25<sup>th</sup> December and 3 irrigations). The combined analysis of variance showed significant differences between the genotypes, treatment, seasons for all the studied traits. The mean performance of the genotypes showed that L11 was the highest grain yield and grain filling rate under normal, water stress, heat stress, combined stresses as well as overall treatments. Genotype by genotype-environment biplot (GGE biplot) illustrated that the best performing genotype under normal conditions was Baj 1 while Shandaweel 1 was the best performing genotype under stress combinations. Genotype x trait biplot (GT biplot) showed a positive correlation between all the traits except, days to heading and days to maturity. Genotype by yield*trait biplot (GY*T biplot) was constructed to estimate superiority and stability for the genotypes. GY*T biplot showed a positive correlation between all yield*trait combinations. Based on superiority index (SI), the best performing genotypes was L11 (SI = 1.830) and the worst was L7 (SI = 1.935). L11 genotype can be utilized in breeding program as a source for abiotic stresses tolerance or can be evaluated in preliminary yield trials at the national level.https://jpp.journals.ekb.eg/article_118024_19a5bc012a6b540d544f283b789f427f.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Effect of Foliar Anti-Salinity Application on Chemical Constituents of Neem Plants Under Salinity Condition82583311802710.21608/jpp.2020.118027ENA. F. HamaylVege. &Flori. Dept., (Vegetable) Fac. Agric., Damietta Univ., Egypt.E. A. El-BoraieVege. &Flori. Dept., (Floriculture) Fac. Agric., Damietta Univ., Egypt.Afnan F.AwadVege. &Flori. Dept., (Floriculture) Fac. Agric., Damietta Univ., Egypt.Journal Article20200905This study was conducted at a Privet Nursery in New Damietta City, Damietta Governorate, Egypt during the two consecutive seasons of 2017/2018 and 2018/2019 in split-plot design in three replicates to estimate the effect of salinity levels (control (tap water), 3600, 5400 and 7200 ppm) as main plot and foliar spraying with (distilled water, salicylic acid, proline, yeast extract and licorice roots extract) as sub plot as well as their combination treatments on chemical constituents of neem plants (<em>Azadirachta indica</em>). The obtained results revealed that with increasing salinity levels photosynthetic pigments, reducing and non-reducing sugars as well as mineral contents (N, P, K, Ca and Mg) of neem leaf were decreased but it not suffered to level 3600 ppm and recorded the highest values, while content of proline, total phenol and Na increased with increasing salinity levels to 7200 ppm. As for the effect of foliar application found that plant sprayed with proline followed by licorice extract resistance the salinity and recorded the highest values of all mentioned traits. Interaction treatments between foliar application and salinity treatments recorded highest values for all traits with proline under 3600 ppm except Na, proline and total phenol at 7200 ppm under foliar spray with proline at 0.2 g/l.https://jpp.journals.ekb.eg/article_118027_065cee474c3d2b75f9139fd79559f0dc.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Impact of Sulfur Rates and some Foliar Applications on Broccoli83583911803110.21608/jpp.2020.118031ENA. F. HamaielVeget. and Flori. Dept., Fac. Agric., Damietta Univ., Egypt.M. A. M. Abd El-HadyVeget. and Flori. Dept., Fac. Agric., Damietta Univ., Egypt.Khloud R.HussienVeget. and Flori. Dept., Fac. Agric., Damietta Univ., Egypt.Journal Article20200906Two field experiments were conducted in a private farm at Kafr Saad district, Damietta Governorate, Egypt, during 2018/2019 and 2019/2020 seasons to study the effect of three sulfur rates (0, 125 and 250 kg/fed.) and some foliar application treatments (sulfur, selenium, chitosan) in addition tap water as a control and their interaction on broccoli growth, yield and quality. Obtained results revealed that sulfur fertilization at 125 kg/fed. gave the maximum values of No. of leaves, head diameter, total yield and head quality (chlorophyll a+b, vitamin C and total carbohydrates). Foliar application with selenium gave the highest means of No. of leaves, fresh weight of leaves, plant height, leaves area, head diameter, head compactness rate and chlorophyll a+b of head, while foliar application with sulfur gave the maximum values of leaves, head dry matter, total yield and vitamin C content, as well foliar application with chitosan gave the maximum content of total carbohydrates. Thus, it could be recommended that the combined application of 125 kg/fed. of sulfur with the foliar applications with sulfur (4ooo mg/l) or selenium (50 mg/l) or chitosan (3000 mg/l) in broccoli fields can be recommended to enhance productivity of broccoli plants and qualityhttps://jpp.journals.ekb.eg/article_118031_30ae472857a59d2c8d3d96e723de63e4.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Evaluation of New Summer Squash Hybrids (Cucurbita pepo L.) Compare with some Commercial Cultivars84184511804410.21608/jpp.2020.118044ENT. M. El-GazzarVegetables and Floriculture Dept., Fac. Agric., Mansoura Univ., Egypt.M. M. NadaVegetables and Floriculture Dept., Fac. Agric., Mansoura Univ., Egypt.A. H. HusseinVegetables Breeding Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt.A. R. DawoodVegetables Breeding Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt.Journal Article20200907In this investigation four parental lines and their six F<sub>1</sub> hybrids - half diallel Mating Design - as well as three commercial cultivars were evaluated for some economic traits; vegetative growth, flowering and earliness, fruits, yield and yield component traits in field trial during 2018 and 2019 early summer seasons. The experimental design was a randomized complete block design (RCBD) with three replicates. Each replicate consisted of 13 plots. The results could be summarized as follow: the results of mean values showed that no parental line was superior for all studied traits. Meanwhile, the parent (P<sub>3</sub>) exhibited the best values for most studied traits specially earliness and yield traits. Moreover, the obtained results confirmed that the highest mean values recorded in the F<sub>1</sub> hybrids were P<sub>3</sub>xP<sub>4</sub> for stem length, number of male flowers/ plant and number of female flowers/ plant, average fruit weight, fruit yield/plant and total yield/ fed.; P<sub>1</sub>xP<sub>3</sub> for sex ratio and fruit diameter; P<sub>1</sub>xP<sub>2</sub> for fruit length and fruit shape index; P<sub>1</sub>xP<sub>4 </sub>for fruits number/ plant. The three crosses (F<sub>1</sub> hybrids) P<sub>1</sub>xP<sub>2</sub>, P<sub>1</sub>xP<sub>4</sub> and P<sub>3</sub>xP<sub>4</sub> had better mean values over the commercial F<sub>1</sub> hybrids for sex ratio, fruit length, fruit shape index, fruits number/plant, fruits yield/ plant and total yield/ fed.https://jpp.journals.ekb.eg/article_118044_e1fc758acde5f1c72a7290fba959230b.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Estimation of Genetic Variability Using Line X Tester Technic in Yellow Maize and Stability Analysis for Superior Hybrids Using Different Stability Procedures84785411804710.21608/jpp.2020.118047ENAhmed AliEl HosaryAgronomy, Faculty of Agriculture, Benha univeristy0000-0002-7466-0349Journal Article20200908Fifteen inbred lines were crossed to three testers of maize to estimate combining ability effects for maturity and yield traits. The produce 45 crosses, S.C. 168 and T.W.C. Giza 368 were evaluated across two years at the Farm of Faculty of Agriculture, Moshtohor, Benha University in RCBD with 3 replicates. Mean squares due to year (Y) genotypes (G), crosses (C), testers (T), inbred lines (L), line x tester (LxT) and interaction variance for C, L, T and LxT with (S) were significant (P>0.05) for most studied traits. Non- additive gene action (δ<sup>2</sup><sub>SCA</sub>) is more pervading in determining inheritance of the most traits. The non-additive type of gene action is fluctuated by year changed more than additive. The inbred lines M. 645a (L4), M. 653 (L5), and M. 674 (L11) showed desirable ĝ<sub>i</sub> for early maturity and grain yield plant<sup>-1</sup>. The crosses M.221xM.653, M.221xM.655b, M.221xM.657, M.221xM.671, M.221xM.674 and M.221xM.677 exhibited out-yielded SC 168 reached 9.96%, 11.35%, 12.53%, 8.32%, 11.80% and 4.80%, respectively across years. TWC (SC M 200xM418)xM.653 and (SC M200xM418)xM.674 showed superiority than TWC 368 being 9.11% and 3.78%, respectively.The eight superior hybrids along with SC168, SC hytech 2066, TWC 368 and TWC 352 were evaluated in 2019 year at various environments using RCBD with 3 replicates to identify suitable adapted maize hybrids. The main effects of genotypes, environments and their GxE interaction were highly significant (P<0.01). Hybrids M. 221 x M. 674, M. 221 x M. 655b, SC hytech 2066 and SC 168 were the most crosses stable phenotypically and genetically across environments.https://jpp.journals.ekb.eg/article_118047_20bbb0e108c516ac62723328de647e57.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Effect of some Treatments to Reduce the Injury of High Temperature on Sweet Pepper Grown in Late Summer Season85586011805210.21608/jpp.2020.118052ENT. M. El-GazzarVeget. and Flor. Dept., Fac. of Agric., Mansoura Uni., Egypt.E. A. TartouraVeget. and Flor. Dept., Fac. of Agric., Mansoura Uni., Egypt.M. M. NadaVeget. and Flor. Dept., Fac. of Agric., Mansoura Uni., Egypt.Madiha E.IsmailVeget. and Flor. Dept., Fac. of Agric., Mansoura Uni., Egypt.Journal Article20200910Two field experiments were carried out at a private farm located in Khelala Village, Bilqas District, Dakahlia Governorate, Egypt, during the two successive summer seasons of 2018 and 2019 to investigate the effect of some treatments which reduce the injury of high temperature on sweet pepper grown in late summer season. Three different levels of shading (50, 63 and 75%), three different planting distances (30, 40 and 50 cm) and two foliar spray rates of potassium silicate (750 and 1500 ppm) and control treatment were investigated. Nine treatments were arranged in a randomized complete block design with three replications. The results show that shading at 75% is the superior treatment for plant height, leaf area, fresh and dry weights/plant, fruit set percent, falling flowers percent, fruit physical characteristics <em>i.e</em>, fruit length, diameter and flesh thickness and fruit chemical characteristics <em>i.e</em>, N, P and K%, VC and TSS compared to other treatments. As for planting distances treatments, all parameters values pronouncedly improve with an increase distances of planting, where the values are the best for distance 50 cm. Also, the values of vegetative, flowering, yield and its components significantly increase with foliar application of 1500 ppm potassium silicate. Meanwhile, the control treatment gives the lowest values for all parameters. According to the obtained results, individual treatments as shading level (75%), planting distance (50 cm) and foliar application with potassium silicate (1500 ppm) were beneficial to improve the growth, fruit quality and yield of sweet pepper plants grown in late summer season.https://jpp.journals.ekb.eg/article_118052_b9bfb269bdb67c2d7fb284abcc4030e6.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901Some Agricultural Practices to Improve the Growth and Yield of the Cucumber during the Winter Season in the Open Fields86186711805610.21608/jpp.2020.118056ENM. A. M. ElsaganDepartment of plant production, Desert Research Center, El-Mataria, Ciaro, EgyptS. S. GomaaDepartment of plant production, Desert Research Center, El-Mataria, Ciaro, EgyptJournal Article20200912The field work was carried out at the Experimental Farm of the Desert Research Center of Siwa Oasis, Marsa Matroh Governorate, during the two consecutive seasons of 2015/2016 and 2016/2017. The experiments were conducted to investigate the effect of humic acid, Bio fertilizer and mixing between them as soil addition and foliar spray by two compounds of amino acids on growth, yield and chemical composition of cucumber plant Bahy cv. Results revealed that the highest values of plant height and weight; shoot and root dry matter percent; No. of leaves/plant; Leaves area; No. of fruits/plant; fruit length and weight; plant yield; early and total yield as well as fruit chemical contents were recorded with mixing between Humic acied and Biofertilizer treatment followed by Humic acid alone treatment. No significant differences occurred among both treatments in all most growth; yield and chemicals contents parameters in both seasons except biofertilizer treatment had the highest values in No. of branches/plant in both growing seasons and the highest values in K (%) and total carbohydrate (%) in second season only. Foliar spray by A 15% at the rate of 2ml/L showed significant increase in plant height; No. of leaves/plant; No. of fruit/plant; fruit weight; plant yield; early and total yield and N (%) in both seasons. Also, B 20% at the rate of 0.5ml/L showed the highest values in shoot and fruit dry matter percent; total chlorophyll and P(%) in both gowning seasons. Positive correlations were existed between study parameters and the regression coefficients (b) indicated that for each increase of one leaf/plant, number of fruits/plant correspondingly increased by 0.36 and 0.31 fruit and for each increase of one fruit/plant, total yield correspondingly increased by 0.69 and 0.78 ton/fed in the first and second seasons, respectively.https://jpp.journals.ekb.eg/article_118056_c58c467624de87bb58788c122bd1ba78.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901استخدام حامض الهيوميک في تحسين الصفات الکمية لبعض التراکيب الوراثية من حنطة الخبزTriticum aestivum L. Use of Humic Acid in Improvement Quantitative Traits of Bread Wheat (Triticum aestivum L.) Genotypes کلية الزراعة – جامعة تکريت– العراق.86987611805910.21608/jpp.2020.118059ENعماد حمید سعدوناسعدکلية الزراعة – جامعة تکريت– العراق.أحمد هواس عبد اللهانيسکلية الزراعة – جامعة تکريت– العراق.Journal Article20200914استخدمت في هذه الدراسة عشرة تراکيب وراثية من حنطة الخبز (جيهان، أدنه، أراس، أکساد، کلاک، فلورکا، شام6، إباء99، ألاء ورزکاري) تحت تأثير ثلاث مستويات من حامض الهيوميک (بدون و20 و40 کغم/ هکتار(حيث طبقت في حقول أحد المزارعين بمحافظة کرکوک باستخدام ترتيب القطع المنشقة في تصميم القطاعات کاملة العشوائية فى ثلاث مکررات. حيث درست صفات عدد الأيام حتى طرد السنابل ومساحة ورقة العلم وارتفاع النبات وعدد السنابل بالمتر المربع وطول السنبلة وعدد حبوب السنبلة ووزن 1000 حبة وحاصل الحبوب للهکتار والحاصل البيولوجي للهکتار ودليل الحصاد. أظهرت النتائج وجود اختلاف معنوي لعاملي الدراسة وتداخلهما لجميع الصفات المدروسة، عدا صفة عدد الأيام حتى طرد السنابل بالنسبة لمستويات حامض الهيوميک. تفوق المستوى الثالث من حامض الهيوميک (40کغم/هکتار) في الصفات کافة عن معاملة المقارنة ، عدا صفة عدد الأيام حتى طرد السنابل فى کلا الموسمين. وکما تفوق الترکيب الوراثي رزکاري في صفات عدد الأيام حتى طرد السنابل ومساحة ورقة العلم ووزن 1000 حبة وحاصل الحبوب (9.63 طن/ هکتار( والحاصل البيولوجي (27.93 طن/ هکتار(. بينما تفوق الصنف جيهان فى صفات عدد السنابل بالمتر المربع. أما الصنف ألاء فقد تفوق فى صفتي طول السنبلة وعدد حبوب السنبلة فى کلا الموسمين. ومن خلال تفوق عاملى الدراسة معنوياً انعکس ذلک على التداخل بين المستوى الثالث لحامض الهيوميک والترکيب الوراثي رزکاري فى صفات مساحة ورقة العلم ووزن 1000 حبة وحاصل الحبوب والحاصل البيولوجي للهکتار، وبالتالي يمکن الاهتمام بهذا الترکيب ودراسة صفاته النوعية والجودة لأجل التوسع في زراعته والاهتمام به مستقبلاً. https://jpp.journals.ekb.eg/article_118059_24bdf1a66038e10291ead6586bf5817d.pdfMansoura University, Faculty of AgricultureJournal of Plant Production2090-366911920200901دراسة التباين الوراثي والمظهري في بعض أصناف حنطة الخبز Triticum aestivum L. لمؤشراتها الإنتاجية Study of Genetic and Phenotypic Variation in Bread Wheat (Triticum aestivum L.) for its Productive Indicators87748311806010.21608/jpp.2020.118060ENاحمد هواس عبد اللهانيسکلية الزراعة – جامعة تکريت – العراق.عبير یاسین محمدالمجمعيمديرية زراعة صلاح الدين - وزارة الزراعة- العراق.Journal Article20200918هدفت هذه الدراسة إلى تقييم عشرة أصناف (إبا95، تموز2، لطيفية، رشيد، شام6، أبو غريب، إباء99، بحوث22، أدنه وجيهان99) من حنطة الخبز وتقدير بعض معالمها الإحصائية والوراثية التي زرعت في منطقة الاسحاقي التابعة لمحافظة صلاح الدين خلال الموسم الشتوي 2018/2019 لدراسة صفات: عدد الأيام من الزراعة حتى 50% طرد السنابل، ارتفاع النبات (سم)، عدد السنابل نبات<sup>-1</sup>، مساحة ورقة العلم (سم<sup>2</sup>)، عدد الحبوب سنبلة<sup>-1</sup>، وزن 1000 حبة (غم)، حاصل النبات الفردي (غم)، الحاصل البيولوجي للنبات الفردي (غم) ودليل الحصاد%. وکانت أهم النتائج هو تفوق الصنف أدنه في صفات ارتفاع النبات ووزن 1000 حبة وحاصل النبات الفردي والحاصل البيولوجي ودليل الحصاد. بينما تفوق الصنفين رشيد وجيهان فى صفتي عدد حبوب السنبلة وعدد سنابل النبات على الترتيب. کان التباين الوراثي أعلى وأکثر تأثيراً من التباين البيئي وکانت نسبة التوريث بالمعنى الواسع مرتفعة لکافة الصفات قيد الدراسة. کان معامل الاختلاف الوراثي والمظهري متوسطاً والتحسين الوراثي المتوقع کنسبة مئوية عالياً لصفتي ارتفاع النبات ومساحة ورقة العلم. کان الارتباط البسيط موجب ومعنوي لحاصل الحبوب مع صفات ارتفاع النبات وعدد سنابل النبات والحاصل البيولوجي ودليل الحصاد. أما الصنفين رشيد وأدنه اللذين تفوقا سابقاً ثبت وقوعهما في مجموعتين مختلفتين وذات تباعد وراثي عالي، وبالتالي يمکن استغلالهما في برنامج التربية لاسيما التهجين ومن ثم يعقبها الانتخاب للوقوف على صنف ممتاز تحت ظروف منطقة الدراسة. https://jpp.journals.ekb.eg/article_118060_7c80a996de140518b24c1de18d502d4d.pdf