Combining Ability in Relation to Wheat (Triticum aestivum L.) Breeding Programme under Heat Stress Environment

Kumar, Sanjeev; Singh, Sanjeev Kumar; Gupta, Sangeeta; Nath, Vishwa; Yadav, Prashant; Kumar, Surendra; Kumar, Jaydev; Bind, Harinarayan; Singh, Lokendra

doi:10.20546/ijcmas.2017.610.361

Cited by 7 publications

(4 citation statements)

References 7 publications

(4 reference statements)

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“…Such obtained results suggested that a great opportunity for selection would be possible for earliness in maturity, yield and its components having a semi-dwarf plant height hence can response to more N fertilizers without least of lodging. These results are in harmony with those obtained by Gurmani et al (2007), EL-Shaarawy and Kumber (2010) and Seleem and Kumber (2011), Kumar et al (2017) and AL Saadoon et al (2018).…”

Section: General Combining Ability Effectssupporting

confidence: 92%

“…For grain yield plant -1 , six and eight crosses had significant and positive ij Ŝ effects in F 1 and F 2 generations, respectively. Inter-and intera-allelic interactions were detected in the crosses P1xP4, P2xP3, P2xP5, P2xP6, P3xP7 and P1xP3 in F 1 generation and P 2 xP 3 , P1xP4, P2xP4, P2xP5, P1xP3, P2xP6, P1xP5 and P3xP4 in F 2 generation (Kumar et al, 2017).…”

Section: Specific Combining Ability Effectsmentioning

confidence: 91%

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Genetic Variability and Heterosis in F1 and F2 Generations of Diallel Crosses among Seven Wheat Genotypes

El-Gammaal

Yahya²

2018

Journal of Plant Production

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In order to study the effect of heterosis and nature of genetic on plant height and yield traits were studied in a 7x7 diallel cross without reciprocals and their F 2 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, F 1 and F 2 were evaluated for quantitative traits in 2016/2017 season. Significant genotype mean squares and its components (parents and crosses) were obtained for all traits in both generations. Significant heterosis in F 1 generation was obtained for all studied traits. Heterosis of grain yield/plant relative to mid parent varied from 4.64 to 75.50% in F 1 crosses. The P2xP3, P1xP4 and P2xP5 were the best crosses for grain yield heterosis. General (GCA) and specific (SCA) combining ability mean squares were significant for all traits. MS (GCA)/ MS (SCA) ratios indicated the relative importance of additive and non-additive gene action in their inheritance for all the traits. The nine crosses i.e. P1xP2,

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Section: General Combining Ability Effectssupporting

confidence: 92%

Section: Specific Combining Ability Effectsmentioning

confidence: 91%

Genetic Variability and Heterosis in F1 and F2 Generations of Diallel Crosses among Seven Wheat Genotypes

El-Gammaal

Yahya²

2018

Journal of Plant Production

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“…crosses, and crosses were highly significant for all the evaluated traits, excluding plant height and 1000-kernel weight for P.VS.C, indicating that these genotypes were genetically different for genes controlling yield and related traits. In this connection significant differences among wheat genotypes , for yield and related traits were also found by Sanjeev et al (2017) and Rahul and Kandalkar (2018).…”

Section: Analysis Of Variance:-supporting

confidence: 61%

Assessment of Genetical Parameters of Yield and its Attributes in Bread Wheat (Triticum aestivum, L.)

El-said

2018

Journal of Agricultural Chemistry and Biotechnology

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Eight parents of bread wheat (Triticum aestivum , L.) illustrate a wide range of diversity for some agronomic traits were selected for the study namely; Gemmiza 11, Giza 168, Sids 14, Masr 2, Sids 12, Sakha 95, Masr 1 and Sakha 94 were crossed at 2016/2017 growing season in one direction diallel cross . The genetic analysis (variance, combining ability, heterosis, and type of gene actions) of grain yield / plant and some related traits were evaluated at 2017/2018. Results indicated that variances of genotypes, parents and crosses were highly significant for all evaluated traits. The variances connected to general and specific combining abilities were established be highly significant for all evaluated traits, except number of kernels /spike for GCA .The estimates of GCA/SCA were less than unity recommended the greater amount of non-additive gene actions in determining the performance of all traits. The crosses (P 1 xP 2 ), (P 2 xP 6 ); (P 3 xP 5 ), (P 3 xP 6 ) and (P 5 xP 6 ) recorded greatest mean values for grain yield/plant.P6 and P8 were considered as the best general combiners for grain yield /plant . The best crosses for SCA and heterosis effect for grain yield / plant recorded for P 1 xP 2 , P 3 xP 8 and P 5 xP 6 where be revealed highly significant and positive SCA and high percent heterosis making them hybrid promising in breeding programs for crop improvement . Hayman and Morley -Jones testing showed that the ratio of (H 1 /D) 1/2 is larger than one for all the studied traits, so over dominance is participating in the genetic of these traits .Estimates of percentage of negative and positive genes (H 2 /4H 1 ) in the parents ranged from 0.18 for plant height to 0.23 for number of kernels /spike and grain yield /plant hence, negative and positive alleles are consistent distributed in this traits. Heritability in broad-sense were high values detected for all the studied traits, indicated that these traits are more genetic, while narrow sense heritability were low for no. of spikes/plant, spike length and grain yield / plant , so the role of additive part is low. Significant differences were observe for additive ("a") effect for all the studied traits in Morley Jones method, Also , dominance ("b") part was significant for all the studied traits, appropriately these traits are controlled by both dominance and additive type of gene actions. As (b 2 ) and (b 3 ) were highly significant for all the studied traits, thus epistasis is participating in their genetics. As the part (b 1 ) was significant for all the evaluated traits, with the exception of plant height and 1000-kernel weight, so dominance genes were attributable to directional dominance. Significant (b 2 ) part for all traits showing imbalance of gene giving out for these traits. Significant (b 3 ) part for all traits showed residual dominance effect (b 3

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“…Knowledge of general and specific combining ability along with the mode of gene action in the available breeding material is very important to start the effective wheat breeding programs (Kumar et al 2017). The diallel analysis method has been frequently used for parent selection as an appropriate scheme to obtain genetic information of yield traits in a short period of time, which can be used for improving efficiency in wheat breeding programs (Kohan and Heidari, 2014).…”

Section: Introductionmentioning

confidence: 99%

Combining Ability of Some Bread Wheat Genotypes for yield and its Components under Normal Watering and Water-Stress Conditions

Elmassry

Arab

Al-Farouk

2020

Journal of Plant Production

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A diallel cross set was carried out at the Experimental Farm of Gemmeiza Agriculture Research Station, Agriculture Research Center, (ARC), Egypt, during the two winter seasons of 2017/2018 and 2018/2019 to assess the variations among six wheat genotypes and their new combinations to estimate heterosis, general and specific combining abilities to determine suitable measurements for drought tolerance in wheat genotypes. Genotypes and the resulted crosses mean squares were found to be either significant or highly significant for all the studied traits under normal and stress environments as well as the combined analysis, except for chlorophyll-a under drought. General combining ability and specific combining ability were found to be significant for all the studied characters under both conditions, except plant height for (SCA) under normal condition, chlorophyll-a for GCA under normal and drought as well as combined analysis and SCA under water-stress condition. The GCA/SCA ratios were found to be greater than unity, suggesting that, additive was much larger and more important than non-additive gene effects in the inheritance of these traits. The two parents Line 1 and Line 3 could be considered as excellent parents in breeding programs aimed to release drought tolerance cultivars. P1, P3, P4, P5 and P6 had the lowest drought susceptibility index value and F1 crosses P1xP2, P1xP3, P1xP4, P1xP5, P2xP6and P3xP5would be classified as drought tolerance due to the least reduction in yield under water stress compared to normal condition, such results might be useful for improving drought tolerance in wheat breeding program.

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Combining Ability in Relation to Wheat (Triticum aestivum L.) Breeding Programme under Heat Stress Environment

Cited by 7 publications

References 7 publications

Genetic Variability and Heterosis in F1 and F2 Generations of Diallel Crosses among Seven Wheat Genotypes

Genetic Variability and Heterosis in F1 and F2 Generations of Diallel Crosses among Seven Wheat Genotypes

Assessment of Genetical Parameters of Yield and its Attributes in Bread Wheat (Triticum aestivum, L.)

Combining Ability of Some Bread Wheat Genotypes for yield and its Components under Normal Watering and Water-Stress Conditions

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