Ahmed El Hosary

Benha University · Department of Agronomy

Plant breeders are very concerned about the presence of genotype environment (G E) interaction since it can significantly lower selection gains and make it more difficult to identify superior genotypes. As an attempt to solve the problem of summer fodder in Egypt, an evaluation was made. Nine genotypes (six teosinte (T)-maize(M) genotypes (T x M (W...

A10x10 half diallel cross were made in 2018/2019 season. Each of parents and their 45 F1 crosses were evaluated under two locations (Ras Sudr and Moshtohor) during 2019/2020 season for some physiological traits. Highly significant genotypes, for genotype and its partitioning (parent, crosses and Parent vs crosses) and both types of combining abilit...

Improving maize (Zea mays L.) genotypes for higher productivity and tolerance to drought stress depends mainly on physiological and molecular markers. Therefore, this study aims at breeding maize for drought tolerance and high potentiality by selection based on molecular markers, photosynthetic parameters; and easy graphic methods that help in sele...

Several agronomic factors, including planting density, affect plant growth and final yield. New soil suffers from severe fertility shortage and crop productivity. Potassium humate (KH) application improves soil fertility and plant performance under new soil conditions. Therefore, this investigation was performed in two seasons of 2018/2019 and 2019...

Fifteen 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)...

An 8x8 half diallel analysis were performed at two planting dates to study the importance of types of combining ability (GCA and SCA) and its interaction with environment in F1 of maize. Planting dates (D), crosses (Cr), GCA, SCA, CrxD, GCAxD, SCAxD were significant for all traits. GCA/SCA exceeded the unity for most traits. Non-additive seemed to...

Mean performance and nature of genetic action on earliness, yield and some quality traits were studied in a 10x10 diallel cross without reciprocals in wheat to define and select an efficient and prospective material for immediate use in hybridization programs to improve grain yield of wheat in Iraq. Parents, and F 1 were evaluated using a randomize...

The present research was conducted to study the combining ability and gene action for morphological, yield and its components traits in F1 crosses of wheat using line x tester procedure. Experiment was conducted incloudingthirty genotypes consisting of ten lines, L1,L2, L3, L4, L5, L6, L7, L8, L9, L10and three testers namely; Sids 12 (T1), Gemmeiza...

Seven bread wheat genotypes were crossed in a7x7half diallel scheme in 2017/2018.Parents and their 21 F1 crosses were evaluated under normal and stress conditions during 2018/2019 in two field experiments. The results of analysis of variance were significant for all studied traits. The highest mean values were detected by parents P1, P1,P2, P3,P2 a...

A half diallel cross between 8 inbred lines of maize was evaluated at two different planting dates for nine quantitative characters. Planting dates and crosses mean squares were significant for all studied traits. Mean squares due to crosses x planting dates were significant obtained for most studied traits. General (GCA) and specific (SCA) combing...

Wheat (Triticum aestivum L). is one of the most crucial staple food crops in Egypt and worldwide it is adversely affected by water stress. The study aims at examine the genetic characterization of nine bread wheat genotypes, Sahel-1 (P1), Gemmiza-9 (P2), Sakha-94 (P3), Misr-1 (P4), Giza-168 (P5), L146 (P6),L133 (P7), L142 (P8) and L147 (P9) using m...

The present study was carried out at the Experimental Research Station of Moshtohor, Benha University, Qalubia Governorate, Egypt during the three successive seasons of 2015-2016, 2016-2017 and 2017-2018. The present study aimed to evaluate the efficiency of three methods of selection used in the wheat breeding program namely; pedigree method (PM),...

Two field experiments were conducted during the two successive summer growing seasons of 2016 and 2017 to study the effect of three nitrogen fertilizer rates, on the growth traits, yield components, yield and some kernels chemical properties of three white single cross hybrids of maize. Almost traits of maize under study, were significantly increas...

The study aimed at identifying and assessing drought tolerance and genetic diversity of twelve wheat genotypes in two diverse irrigation treatments during the two successive seasons of 2016/2017 and 2017/2018. Drought caused decreases in flag leaf area, relative water content and grain yield. Catalaise and perodixdase activities and proline content...

Hybrids involving diverse parental genotypes generally produce high specific combining ability effects and hybrid vigor. Therefore, the choice of the suitable breeding program depends on the inheritance of the quantitative traits. This research aims at detecting the extent of the genetic diversity (GD) among 8 wheat parental genotypes, and its impl...

A half diallel cross between 7 inbred lines of maize was evaluated at two different sowing dates for nine quantitative characters. Sowing date and crosses mean squares were significant for all traits under study. Significant crosses x sowing date mean squares were obtained for all studied traits except, No. of rows/ear. General and specific combing...

Key words: Wheat, ISSR marker, combining ability, drought stress, GCA and SCA. Eight bread wheat genotypes were screened by the six ISSR primers and scored a total of 54 amplified DNA bands. The number of bands varied from 40 to 69 bands form primers ISSR 2 (6 fragments) to ISSR 5 (13 fragment). Number of polymorphic fragments varied from 1 for ISS...

This investigation was carried out to study the combining ability effects of 18 parents of maize (15 inbred lines and 3 testers) crossed in line x tester scheme for phonological, plant and yield characteristics. A yield trial included the 45 top crosses, 15 inbred lines, 3 testers along with the two check hybrids S.C. 168 and TWC 352. The experimen...

Eight inbred lines of white maize were crossed in half diallel scheme in 2016 season to assess mean performance, general (GCA) and specific (SCA) combining ability and their interaction with locations. Two experiments were conducted at two locations, viz. Moshthor, (L 1) and Sohag (L 2) using RCBD with 3 replications in season 2017. Each block cons...

Eight inbred lines of white maize were crossed in half diallel scheme in 2016 season to assess mean performance, general (GCA) and specific (SCA) combining ability and their interaction with locations. Two experiments were conducted at two locations, viz. Moshthor, (L 1) and Sohag (L 2) using RCBD with 3 replications in season 2017. Each block cons...

The current research aimed to selecting wheat stable genotypes with high productivity across diverse environments. Fifteen wheat genotypes were grown in a randomized complete block design with three replications at three sowing dates during two successive seasons of 2016/2017 and 2017/208 representing six environments. The genotypes were evaluated...

Eight bread wheat genotypes were crossed in a8x8half diallel scheme in 2015/2016.Parents and their 28 F1 crosses were evaluated under normal and stress conditions during 2016/2017 in two field experiments. The results of analysis of variance were significant for all studied traits. The highest mean values were detected by parents P2, P2,P8, P2,P6 a...

The present investigation aimed to determine stability parameters of some Egyptian cotton genotypes i.e. Giza 80, Giza 90, L1 ( G.90 x Australy ) , Giza 95, L2 [G.80 x Australy] x G.83, L3 [G.83 Raid x Australy] x G.91, L4 [G.83 x (G .80 x G .75 )] x Karashenky and L5 [G.83 x (G .80 x G .89 )] x Australy under 4 environments (two locations and two...

Eight bread wheat genotypes were crossed in a8x8half diallel scheme in 2015/2016.Parents and their 28 F1 crosses were evaluated under normal and stress conditions during 2016/2017 in two field experiments. The results of analysis of variance were significant for all studied traits. The highest mean values were detected by parents P2, P2,P8, P2,P6 a...

Selection of wide adaptability and stable high yielding genotypes in diverse environments is an important objective for breeding programs. The current research aimed to analyze the genotype-by-environment (GxE) interaction for seed yield of sixteen soybean genotypes grown under six locations (Mallawy, Sids, Sakha, Etay El-barood, Gemmeiza and Nubar...

Seven sugar beet cultivars (Three poly germ Sara / 2135, Dina / 2134 and Bts /302 and four mono germ genotypes i.e. Helios poly, Marathon, Ravel and Francesca) were evaluated in two successive seasons (2014/15 and 2015/16) in three different planting date using randomized complete block design with 3 replications for each of the six environments at...

A diallel cross among six parental peanut genotypes to obtain 15 crosses. All entries were evaluated in randomized complete block design with three replications under two different sowing dates for yield and quality character. Genotypes and its portioning mean squares were significant for all character under both and across sowing date except P vs....

A half diallel set of six parents was used in this study to estimate general and specific combining ability along with heterosis in some important traits of flax. The six parents and their 15 single crosses were evaluated in 2013/ 2014 winter season in a randomized complete block design with four replications. General and specific combining ability...

A half diallel cross between eight inbred lines of maize (Zea mays L.) was evaluated under two environments (artificial infestation and normal conditions.) in RCBD with three replications. Highly significant genotypes, parents and crosses were detected for the borer traits. General and specific combining (GCA and SCA) were found to be significant f...

A half diallel cross between six parental peanut genotypes to obtain 15 crosses. All genotypes were evaluated in randomized complete block design with three replications under two different sowing dates for yield and its components. Genotypes mean squares were found to be significant for all character under both and across sowing date. The parent I...

Genetic diversity of maize inbred lines using ISSR markers and its implication on quantitative traits inheritance

Genetic diversity of maize inbred lines using ISSR markers and its implication on quantitative traits inheritance

A half diallel set of crosses involved eight yellow maize inbred lines were evaluated in normal and artificial infection by late wilt environments at the Agricultural Research and Experiment Center, Faculty of Agriculture, Benha University, Egypt. To estimate combining ability, improve productivity of maize and resistant to late wilt in Egypt. Mean...

This investigation aimed to estimate the type and relative amount of genetic variance components and their interactions with irrigation treatments for earliness, some physiological traits, yield and its components. A half diallel set of crosses involving seven parental inbred lines were evaluated in two separate experiments (normal irrigation and w...

Heterosis and nature of genetic effects on plant height and yield traits were studied in a 6x6 diallel cross without reciprocals and their F2 generation in wheat to define and select an efficient and prospective material for immediate use in hybridization programs to improve grain yield of wheat in Egypt. Parents, F1 and F2 were evaluated using a r...

A half diallel set of crosses involving 8 inbred lines of maize along with two commercial hybrids (SC 10 and SC Pioneer 30k8) were evaluated at two different sowing dates (2/5/2014 and 1/6/2014) using RCBD design with three replications at the Agricultural Research and Experimental Station of the Faculty of Agriculture, Moshtohor, Benha University...

A half diallel cross between 9 inbred lines of maize (Zea mays L.) was evaluated under two environments (under artificial infestation conditions and normal conditions.) in RCBD with three replications. Highly significant genotypes, parents and crosses were detected for the borer traits. General and specific combining (GCA and SCA) were found to...

A half diallel cross among eight parents of wheat (Triticum aestivum L.) was evaluated under recommended irrigation and drought stress in RCBD with three replications. Mean squares for genotypes, parents, crosses and parent vs. crosses were significant for the most measurements in both irrigation treatments as well as the combined analysis. The...