Heterosis and combining ability analysis of slow rusting stem rust resistance and yield and related traits in bread wheat

Hei, Netsanet Bacha; Shimelis, Hussein; Laing, Mark

doi:10.1007/s10681-015-1526-9

Cited by 16 publications

(12 citation statements)

References 17 publications

(25 reference statements)

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“…Finally, heterosis estimates indicated that, the best crosses over their mid and better parents were Giza168 x Sids12 (P 1 X P 4 ), Giza168 x Sakha94 (P 1 X P 5 ), Giza168 x Gemmeiza10 (P 1 X P 8 ), Misr1 x Sakha94 (P 2 X P 5 ), Sakha93 x Misr2 (P 3 X P 6 ), Sakha94 x Misr2 (P 5 X P 6 ), Sakha94 x Gemmeiza9 (P 5 X P 7 ), Misr2 x Gemmeiza9 (P 6 X P 7 ) and Gemmeiza9 x Gemmeiza10 (P 7 X P 8 ). Similar results also, found by Moshref (2006);El-Borhamy et al, (2008); Mekhamer (2009); Akbar et al, (2010); Kumar et al, (2011); Sulaiman (2011); Hussain et al, (2013); Pankaj Garg et al, (2015); Said Salman et al, (2015); and Hei et al, (2016).…”

Section: Heterosis Effectssupporting

confidence: 76%

Genetic Analysis for Yield and its Components in Bread Wheat

El-Hady

Zaied

Ramadan

et al. 2018

Journal of Agricultural Chemistry and Biotechnology

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Eight bread wheat cultivars were used to study some earliness and yield and its component traits. The parental cultivars were employed to produce 28 F 1 hybrids following 8 x 8 half Diallel crossing without reciprocals. The seeds of 28 F 1 hybrids and their parents were planted to estimate mean squares due to parents and their crosses which were significant for all studied traits. The parental variety P 3 was the best parent for earliness. However, P 8 was the best for remained traits. The crosses (P 1 x P 4) and (P 2 x P 4) were the best combinations for earliness traits, while the six crosses were the best for remained traits. Highly significant negative desirable heterotic effects were detected for earliness, on the contrary for remained traits relative to mid and better parent. The mean squares associated with general and specific combining abilities detected significant and highly significant estimates for all studied traits. Results indicated that P 4 (Sids12) was good combiner for earliness traits and most of yield and its component traits. The best cross combinations displayed fair amount of SCA effect were obtained from (P 2 x P 4) and (P 4 x P 5) for earliness traits, the six crosses for remained traits. The graphical analysis Wr/Vr indicated the importance of over dominance gene effects in controlling all traits. The results indicated the importance of additive and dominance genetic variances in controlling these traits. The "a" item was significant for most studied traits and more than "b" item. Narrow sense heritability was less than (0.50) for all traits except plant height trait (0.80). Positive alleles were not equally distributed among parents (H 2 /4H 1 ≠ 0.25) for all studied traits. The magnitude of dominance (H 1 /H 2) was significant or highly significant higher than additive components (D) for all traits, expect plant height trait. All estimates of environmental variance (E) were positive significant and highly significant for all studied traits indicating that all studied traits have greatly affected by environmental factors.

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Section: Heterosis Effectssupporting

confidence: 76%

Genetic Analysis for Yield and its Components in Bread Wheat

El-Hady

Zaied

Ramadan

et al. 2018

Journal of Agricultural Chemistry and Biotechnology

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“…Moreover, the selection of these traits would not be effective in a single condition but more conditions would be required. In this respect, Naseem et al (2015), Abdallah, et al (2015, Hei et al (2016), Kaur and Mondal (2016) , El-Saadoown et al (2017), Jatav et al (2017) Nevertheless, GCA variance values were higher than SCA for all characters under these study at the two sowing dates, proving that, selection for improve the studied characters would be more effective using some of the present parents and crosses. In addition, the ratios of GCA/SCA under the two sowing dates were more than unity for all characters, except for GFP under optimum sowing date, KW under both conditions and GY under late sowing date, meaning that additive gene effects predominantly control these characters.…”

Section: C-combining Ability 1-analysis Of Variancementioning

confidence: 55%

Combining Ability and Heterosis Analyses for Earliness and Yield Potential in some Bread Wheat Crosses under Optimum and Late Sowing

Aboshosha¹,

Galal²,

Youssef³

2018

Journal of Plant Production

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This study was carried out during the two successive seasons 2014/2015 and 2015/2016 at the experimental farm of Sakha Agricultural Research Station, Kafr El-Sheikh, Egypt. Eight bread wheat (Triticum aestivum L.) cultivars and lines, differing in their earliness were used as parents and evaluated with their 28 F1's under optimum (29 th Nov.) and late (29 th Dec) sowing dates. The studied characters were earliness, grain yield and its components. significant differences were detected between the two sowing dates and among the studied genotypes in each sowing date and across the two sowing dates. The mean squares of GCA and SCA for most studied characters were significant or heighly significant under both sowing dates. Means of the parents and their crosses were decreased under late sowing date for all the studied characters. The early parents and most of their F1's had the desirable mean values for combining ability and heterosis effects for earliness characters. Moreover, the parents Giza 171, Misr 2 and Line 1 (late parents) were the best parents for mean performance and general combining ability (GCA) for grain yield and its components in most cases. Four crosses resulting from late and early parents under both sowing dates were the highest ones and could be used in advanced studies for earliness and grain yield potential. The GCA/SCA ratios were more than unity for most studied characters under both sowing dates.

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“…Short stature wheat genotypes are mostly preferred because dwarf wheat genotypes have the minimum chances of lodging. In past studies, lines and testers were found with negative GCA and their line by tester populations also revealed negative SCA for plant height in wheat (Hei et al, 2015;attar et al, 2018). Earlier findings revealed that lines were found as excellent parental genotypes for crossing with various testers for plant height and yield-related traits in wheat (Istipliler et al, 2015).…”

Section: Discussionmentioning

confidence: 93%

Benthic Macroinvertebrates and Physicochemical Variables of Streams in the Guli River National Wetland Park, Greater Khingan Mountains, Northeast China

2020

THE JAPS

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In the current breeding program, the development of new wheat genotypes with greater genetic potential has become an enduring target to assist in food security. Wheat breeders are also trying to develop such genotypes that can fetch maximum return with limiting resources. Line-by-tester combining ability analysis was carried out during 2015-2018 to determine the genetic divergence, general and specific combining ability (GCA and SCA) among lines, testers, and line by tester interactions, and legacy of agronomic traits in wheat. Six wheat lines i.e., IBWSN-177, IBWSN-52, IBWSN-131, SRN-09111, PR-107, and NR-21, and three testers i.e., Pirsabak-15, Shahkar-13, and Pakhtunkhwa-15 were crossed in a line by tester mating fashion. After advancing the generation, eighteen F2 populations and nine parental genotypes were grown in a randomized complete block design with three replications and assessed through line by tester combining ability. Analysis of variance revealed significant (p≤0.01) variations among genotypes (parental cultivars and F2 populations) for the studied traits. According to combining ability analysis, lines revealed significant (p≤0.01) variances for days to heading and harvest index, while merely significant (p≤0.05) for plant height and flag leaf area. However, line by tester interactions revealed significant (p≤0.01) differences for all the variables. Parental genotypes IBWSN-131, Shahkar-13, and F2 populations IBWSN-131 × Pakhtunkhwa-15, IBWSN-131 × Shahkar-13, and PR107 × Shahkar-13 were identified as promising general and specific combiners which performed better for earliness and yield traits. High by high, high by low and low by high general combiners were involved in F2 populations with promising SCA and best mean performance. In comparative involvement to the total variance, the lines and L × T F2 populations had a maximum share for the majority of the traits. Ratios of GCA to SCA variances and degree of dominance revealed that all the traits were managed by dominant gene action. Non-additive gene action suggested that selection of promising populations should be postponed to later segregating generations for further improvement.

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Heterosis and combining ability analysis of slow rusting stem rust resistance and yield and related traits in bread wheat

Cited by 16 publications

References 17 publications

Genetic Analysis for Yield and its Components in Bread Wheat

Genetic Analysis for Yield and its Components in Bread Wheat

Combining Ability and Heterosis Analyses for Earliness and Yield Potential in some Bread Wheat Crosses under Optimum and Late Sowing

Benthic Macroinvertebrates and Physicochemical Variables of Streams in the Guli River National Wetland Park, Greater Khingan Mountains, Northeast China

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