Heritability Studies of Yield and Yield Associated Traits in Wheat Genotypes

Al-Tabbal, Jalal A.; Al-Fraihat, Ahmad H.

doi:10.5539/jas.v4n4p11

Cited by 17 publications

(22 citation statements)

References 15 publications

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“…Grain Weight Spike -1 exhibited high heritability (71.74%) among fourteen advanced lines and four checks (table 3). These results are in conformation with the findings of Al-Tabbal and Al-Fraihat, [28]. For grains per spike, other researchers also reported high heritability estimates [16,17].…”

Section: Heritability Estimation On Entry Mean Base Among Six Traits supporting

confidence: 91%

Heritability estimates and traits association in wheat advanced lines

Ali¹,

Tunio²

2017

IMRJ

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Development of superior genotypes is the main aim all breeding programs. For this purpose comprising 14 spring wheat advanced lines with four checks were evaluated for six yield parameters during 2011-12 in an RCB design with three replications. Analysis of variance revealed highly significant differences (P?0.01) for all the studied traits except harvest index which showed significant differences (P?0.05). Mean values ranged between 87.7 to 110.4 cm for plant height, 29.1 to 38.1 cm for peduncle length, 1.91 to 2.89 g for grain weight spike-1, 5617.3 to 7197.5 kg for grain yield ha-1, 15679 to 20123 kg for biological yield ha-1 and 34.94 to 42.40% for harvest index. Grain yield has significant correlation with grain weight spike-1 (0.407**), biological yield (0.486**) and harvest index (0.549**). High heritability was observed for grain weight spike-1 (71.74%), grain yield ha-1 (69.01%) and biological yield ha-1 (71.87%).

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Section: Heritability Estimation On Entry Mean Base Among Six Traits supporting

confidence: 91%

Heritability estimates and traits association in wheat advanced lines

Ali¹,

Tunio²

2017

IMRJ

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“…Selection upon these traits would be directly reflected on further improvement in grain yield. These results were, in general, agree with those reported by Al-Tabbal (2012) and Khan (2013).…”

Section: Variance Componentssupporting

confidence: 83%

Performance and Genotypic Variability of Three Bread Wheat Cultivars under Stress Irrigation Regimes

2013

Egypt. J. Agron.

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WO FIELD experiments were conducted at the experimental farm of Faculty of Agriculture, Kafrelsheikh University, Egypt during 2011/2012 and 2012/2013 seasons. The main objective of this investigation was to study the influence of three levels of drought stress imposed during critical stages on the performance and genotypic variability of three bread wheat cultivars. Results indicated that exposure wheat plants to moderate (two irrigations) or high stress (only one irrigation) decreased significantly all characters (except spike length) compared with low drought stress (three irrigations). However, the differences between moderate and high drought stress were not significant for No. of spikelets/ spike and No. of grains/ spike. Large variations among wheat cultivars were recorded for all the studied characters, indicating that wide range of genetic variability were present among the studied cultivars. As average over stress regimes, Sids 12 recorded the most desirable values for spike length, No. of spikelets/ spike, No. of grains/ spike, spike weight and grain yield. Whereas, the differences between Sids 12 and Misr 1 were not significant for grain yield. Misr 1 gave the highest values of plant height, heading date, No. of spikes/ m 2 and 1000-grain weight. Heading date, plant height, spikes/ m 2 , 1000-grain weight and grain yield were significantly affected by the interaction between irrigation regimes and wheat cultivars. The highest grain yield was recorded for both Misr 1 and Sids 12 wheat cultivars under low irrigation stress (0.62 and 0.59 kg/ m 2 , respectively). However, the differences between moderate and high stress were not significant (for grain yield) in case of Giza 168. Correlation analysis of yield and yield related characters indicated that under low drought stress condition, No of spikes/ m 2 and 1000-grain weight was positively correlated with grain yield. While, these traits were spike length, No. of spikelets/ spike, No. of grains/ spike and spike weight in case high drought stress conditions. The extent of coefficient of variation indicated that high estimates of phenotypic (PCV) and genotypic (GCV) coefficients of variability were exhibited by number of grains/ spike (23.7 and 22.3), number of spikes/ m 2 (26.1 and 24.14), spike weight (26.5 and 24.2) for PCV and GCV, respectively.

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“…A high heritability for TKW which reached 0.88 was also observed in wheat by Ramya et al (2010). In addition, different high heritability estimates were previously found for TKW, indicating the occurrence of high additive gene effects and thereby a high response to selection for this trait (Wang et al, 2009;Al-Tabbal and Al-Fraihat, 2012;Wang et al, 2012).…”

Section: Responses To Selection and Heritability Estimatesmentioning

confidence: 67%

“…Evidently, the concurrent responses to selection for TKW obtained in GYP were greater under heat stress than those obtained under favorable conditions; this can be explained as due to the correlation between TKW and GYP being much larger under heat stress than under favorable conditions. In this regard, moderate to high correlations between TKW and GYP have been widely reported in wheat under different environmental conditions (Zheng et al, 2011;Al-Tabbal and Al-Fraihat, 2012;El-Rawy, 2015;Qin et al, 2015;Hassan et al, 2016;Gao et al, 2017), suggesting that selection of higher TKW is highly effective for improving GYP in wheat (Tshikunde et al, 2019).…”

Section: Correlated Responses To Selectionmentioning

confidence: 97%

Phenotypic Selection and Bulked Sergeant Analysis for 1000-Kernel Weight under Heat Stress in Durum Wheat

Hassan

El-Rawy

2021

Journal of Agricultural Chemistry and Biotechnology

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Divergent phenotypic selection for 1000-kernel weight (TKW) was performed under heat stress in a population of 120 F7 recombinant inbred lines (RILs) of durum wheat. The direct response to selection for TKW and correlated response in grain yield per plant (GYP) were assessed under favorable and heat stress conditions. Considerable genetic variations were found among the tested RILs for TKW and GYP. Under heat stress, mean TKW of F7 RILs selected in the high and low directions were 62.28 and 34.42g, respectively. Positive and highly significant responses to selection were obtained for TKW in the high (14.92 and 16.29%) and low (20.78 and 26.88%) directions under favorable and heat stress conditions, respectively. Selection for higher TKW produced positive and highly significant correlated response in GYP under heat stress (11.05%), whereas selection for lower TKW produced positive and highly significant correlated responses in GYP under favorable (11.13%) and heat stress (19.33%) conditions. High realized heritability estimates were obtained for TKW (0.74 and 0.75) and GYP (0.65 and 0.71) under favorable and heat stress conditions, respectively. F8 RILs derived from selection for higher TKW showed higher heat tolerance index (averaged 1.20) than RILs selected for lower TKW (0.52), indicating the usefulness of selection for higher TKW in improving heat tolerance. Bulked segregant analysis with 40 simple sequence repeats (SSR) markers identified seven positives alleles located on 2A (1), 3B (2), 4A (1), 5A (1), 6A (1) and 7B (1) chromosomes that were associated with higher TKW as an indicator for heat tolerance.

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Heritability Studies of Yield and Yield Associated Traits in Wheat Genotypes

Cited by 17 publications

References 15 publications

Heritability estimates and traits association in wheat advanced lines

Heritability estimates and traits association in wheat advanced lines

Performance and Genotypic Variability of Three Bread Wheat Cultivars under Stress Irrigation Regimes

Phenotypic Selection and Bulked Sergeant Analysis for 1000-Kernel Weight under Heat Stress in Durum Wheat

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