This investigation was conducted during the 2018/2019 and 2019/2020 seasons at Sakha Agricultural Research Station, Egypt to study the influence of four planting dates on earliness and yield of fourteen wheat genotypes. The combined analyses showed highly significant differences due to years, sowing dates, genotypes and their interactions for most studied traits. December 5 th was the best sowing date for wheat production. The wheat new genotypes lines 1 and 2 had the lowest days to booting, heading, anthesis and maturity on the other side they had the highest values for grain filling period (GFP) and 1000kernel weight. Based on the genotype means, the late heading genotype (Giza 163) had short GFP (29.5 days) and possessed a high grain filling rate (233 kg ha -1 days-1 ). The cultivar Misr 3 was superior overall genotypes for grain yield (10.529 t ha. -1 ), spikes per square meter (552 spikes), and straw yield (20.164 t ha. -1 ); and it ranked first under early sowing date (Nov. 5 th ) with 9% higher grain yield overstudied genotypes. According to stability analyses, Misr 3, Sakha 95 and Giza 171 recorded the highest yield, with the regression coefficient values ˃1. This study recommended release of new wheat genotypes (Lines 1 and 2) as new cultivars and use them to develop early maturing and heat-tolerant bread wheat genotypes in breeding programs.

No abstract

This investigation was carried out to identify stem rust resistance genes in the six Egyptian bread wheat cultivars Sakha 93, Sids 1, Gemmeiza 10, Gemmeiza 11, Misr 1 and Misr 2. F1 seed were developed from the crosses between the six wheat cultivars and each of the wheat monogenic lines of Sr 11, Sr 32, Sr 33 and Sr 40 in 2012/2013 season. In the next season, 2013/2014, F2 plants were tested under field conditions after artificial inoculation with a mixture of stem rust physiological races at Sids Agricultural Research Station, ARC, Egypt. Chi-square test was used to test the fitness of segregation in F2 plants for each cross to the expected ratios. Out of the six wheat cultivars, the two cultivars Sids 1 and Gemmeiza 10 showed no or negligible segregations in F2 crosses between them and each of the four stem rust monogenic lines. All or majority of F2 plants showed resistant type of reaction to stem rust under field conditions indicating that both cultivars expected to carry Sr 11, Sr 32, Sr 33 and Sr 40 adult-plant stem rust resistance genes. On the other hand, the remaining four wheat cultivars, Sakha 93, Gemmeiza 11, Misr 1 and Misr 2 showed significant segregation in their F2 crosses with the monogenic lines. Segregations among F2 plants were toward resistance in the crosses with the two cultivars Sakha 93 and Gemmeiza 11 while it was toward susceptibility in the crosses with the two cultivars Misr 1 and Misr 2. Resistance found to be dominant over susceptibility in the crosses between the two cultivars Sakha 93 and Gemmeiza 11 and the monogenic lines except for the cross Sakha 93 x Sr 32. Meanwhile, susceptibility was dominant over resistance in the crosses between the two cultivars Misr 1 and Misr 2 and the monogenic lines. The results of this study indicate the importance of the two Egyptian bread wheat cultivars Sids 1 and Gemmeiza 10 as a source of adult-plant stem rust resistance genes which could be utilized in wheat breeding program for improving stem rust resistance in Egypt.

The new promising bread wheat cultivar Shandaweel 1 has been selected from one of the advanced lines among the International Maize and Wheat Improvement Center collections ( CIMMYT )grown in wheat research department, Field Crops Research Institute, ARC. Egyptat Shandaweel Research Station. The grain yield of the new cultivar Shandaweel 1 was evaluated through 99 experiments conducted at four different levels; ( 8 macro, 56 micro and 35 verification yield trials)in seasons, respectively. Results proved superiority of the new bread wheat cultivar Shandaweel 1 compared to the commercial checks cultivars Sakha 93, Sakha 94, Gemmeiza 9 and Giza 168 for grain yield at North, South and Middle Delta and Upper Egypt regions. Moreover, the results of the verification yield trials ensure the superiority of Shandaweel 1 cultivar on the commercial wheat cultivar Giza 168 at North, Middle, South Delta and Upper Egypt. Alsothe superiority of Shandaweel 1 cultivar on the commercial wheat cultivar Giza 168 and Gemmeiza 9 at North and South Delta and the Out Valley region was observed and recorded. Thus, we can highly recommended the new cultivar Shandaweel 1to be grow at North Delta, South Delta,Middle Delta, Middle and Upper Egypt and the Out Valley regions. ‫أمدين‬ ‫ابددبمياد‬ ‫بدي,‬ ‫,إبد‬ ‫مدو,يبد‬ ‫بدديف‬ ‫يد‬ ‫مدو‬ , ‫ممدا,‬ ‫محمدد‬ ‫أحمد‬ , ‫صادق‬ ‫محمد‬ ‫إيمان‬ ‫بمدددين‬ ‫اددز‬ , ‫ف‬ ‫مشدد‬ ‫خبددف‬ ‫محمددد‬ , ‫ابدبممجيددد‬ ‫,صدديد‬ ‫دب‬ ‫و‬ ‫أبددو‬ ‫,أبددوب‬ ‫حمددادب‬ ‫د‬ ‫,أسدد‬ ‫مدال‬ ‫أحمدد‬ , ‫محجدو‬ ‫بمسديد‬ ‫ديدا,‬ , ‫دنددبو‬ ‫حمدد‬ , ‫اشدو‬ ‫حسدن‬ , ‫بمسديد‬ ‫حمن‬ ‫ابدبم‬ ‫مصطفى‬ ‫ناديد‬ , ‫وادى‬ ‫بم‬ ‫و,داض‬ , ‫موسدى‬ ‫أحمدد‬ , ‫بممنشداو‬ ‫ابدبمسدي,‬ , ‫ددامى‬ ‫بمب‬ ‫دانى‬ , ‫ددال‬ ‫جمد‬ , ‫ابدبمدددبي,‬ ‫صددبحى‬ , ‫ددويب,‬ ‫سد‬ ‫ابدبمبددع‬ , ‫قمبدد‬ ‫اددا‬ , ‫ددي‬ ‫د‬ ‫بم‬ ‫أبددو‬ ‫صددباد‬ , ‫ابدددبمنو‬ ‫سديد‬ , ‫خامدد‬ ‫ي,‬ ‫ابددبم‬ ‫محمدد‬ , ‫حماد‬ ‫يد‬ ‫س‬ , ‫حسن‬ ‫محمد‬ ‫سيي‬ , ‫سبي,‬ ‫صب‬ , ‫بو‬ ‫بمش‬ ‫ا‬ ‫دال‬ ‫مند‬ , ‫حمن‬ ‫ددبم‬ ‫ابد‬ ‫ددب‬ ‫,ماجد‬ ‫داو‬ ‫بمصد‬ ‫دزب‬ ‫اد‬ , ‫دى‬ ‫بد‬ ‫بممز‬ , ‫ددبممن‬ ‫ابد‬ ‫داد‬ ‫مد‬ , ‫دن‬ ‫حسد‬ ‫دمد‬ ‫بدبمصد‬ , ‫د‬ ‫د‬ ‫دجد‬ ‫دادل‬ ‫,اد‬ ‫دا‬ ‫يد‬ ‫ز‬ ‫دد‬ ‫محمد‬ , ‫دي,‬ ‫بمسد‬ ‫دد‬ ‫ابد‬ ‫دان‬ ‫ماد‬ ‫ع‬ ‫بد‬ ‫د‬ ‫مد‬ ‫ددبمفماد‬ ‫ابد‬ , ‫ال‬ ‫ددبم‬ ‫ابد‬ ‫دد‬ ‫محمد‬ ‫أمجد‬ , ‫ي,‬ ‫ابدبم‬ ‫ثناض‬ , ‫ك‬ ‫مبا‬ ‫يوسف‬ ‫محمد‬ , ‫محمود‬ ‫وخ‬ ‫شم‬ ‫محمود‬ , ‫مصطفى‬ ‫طع‬ ‫أحمد‬ ‫بم‬ ‫دى‬ ‫ز‬ ‫وميدد‬ , ‫اجدين‬ ‫ابددبمودا‬ ‫من‬ ‫مد‬ , ‫بداو‬ ‫بمز‬ ‫ددد‬ , ‫سى‬ ‫م‬ ‫محمد‬ , ‫حدا,‬ , ‫يمدانى‬ ‫دب‬ ‫صد‬ ‫بدي,‬ ‫د‬ ‫إبد‬ , ‫دان‬ ‫ناثد‬ ‫ين‬ ‫دي‬ ‫شد‬ , ‫داد‬ ‫جد‬ ‫بدي,‬ ‫د‬ ‫إبد‬ ‫دد‬ ‫خامد‬ , ‫دب‬ ‫ددم‬ ‫بمد‬ ‫دد‬ ‫خامد‬ , ‫دد‬ ‫ابدبمحميد‬ ‫ديد‬ ‫بمسد‬ ‫ددد‬ ‫ابدبموبحد‬ ‫ددان‬ ‫,جييد‬ ‫محمدددد‬ ‫دددين‬ ‫بمد‬ ‫ددى‬ ‫محد‬ ‫ددد‬ ‫محمد‬ , ‫دددبمماد‬ ‫ابد‬ ‫ددوبى‬ ‫ند‬ ‫ددد‬ ‫محمد‬ , ‫دددبمبطيف‬ ‫ابد‬ ‫ود‬ ‫محد‬ , ‫مصدطفى‬ ‫ادز‬ ‫,مصدطفى‬ ‫بمددين‬ ‫شديا‬ ‫بمددين‬ ‫مدا‬ , ‫ع‬ ‫جم‬ ‫بمدين,ابدبمسي,‬ ‫نو‬ , ‫ادا‬ ‫يف,سدامى‬ ‫ش‬ ‫أبدو‬ ‫دطفى‬ ‫,مصد‬ ‫جدودب‬ ‫ادادل‬ , ‫بي,‬ ‫ابددبم‬ ‫د‬ ‫مسد‬ , ‫شد‬ ‫ش‬ ‫صدفاض‬ ‫محمدد‬ , ‫دا‬ ‫حند‬ ‫دل‬ ‫نبيد‬ , ‫جد‬ ‫د‬ ‫جد‬ ‫دى‬ ‫موسد‬ , ‫دود‬ ‫محمد‬ ‫دل‬ ‫خ...

The new promising durum wheat cultivar Bani Suef 6 was newly released from Wheat Research Department, Field Crops Research Institute, ARC, Egypt. Bani Suef6 has been selected from CIMMYT materials grown at Sids Agricultural Research Station. Yield evaluation was performed through 31 experiments conducted at different levels of preliminary and advanced yield trials during the three successive growing seasons from 2004/2005 to 2006/2007. The results revealed that the new durum wheat cultivar Bani Suef6 has high yielding ability compared with commercial durum wheat cultivars. Moreover, stability analysis for grain yield showed that Bani Suef 6 has better stability parameters in the three main regions for durum wheat cultivated in Egypt, i.e., Middle Egypt, Upper Egypt and Out Valley. Also, the results of rust diseases reactions cleared that Bani Suef 6 has high resistance to leaf and stem rust diseases. Studies on yield components of Bani Suef 6 revealed that the new cultivar had significantly surpassed the check durum cultivars in number of spikes/m 2 , number of kernels/spike and higher 1000-kernel weight confirming the contribution of yield components in improving grain yield of the new durum cultivar Bani Suef 6. Studies on number of days to heading revealed that Bani Suef 6 recorded 98.7 days to heading which was earlier than some durum cultivars and almost equal to the average of all cultivars (99.1 days). Similarity, Bani Suef 6 was the earliest in physiological maturity (147.7 days) while other durum checks ranged from 149.0 to 150.8 with an average of 149.7 days. Bani Suef 6 recorded the lowest plant height (101.0 cm vs. 106.0 cm for the average of other cultivars). Physical and chemical analyses of durum wheat grains showed that the new cultivar Bani Suef 6 had a higher score over the average of the other four durum cultivars in hectoliter (83.1 vs. 82), Semolina (77.0 vs. 76.6%), protein (12.9 vs. 12.3%), wet gluten (29.6 vs. 28.4%) and dry gluten (