Genetic Parameters for Some Yield and Yield Components Characters in Four Crosses of Bread Wheat Under Two Water Regime Treatments

Sultan, M. S.; El-Latif, A. H. Abd; Abdel-Moneam, M.; El-Hawary, M. N. A.

doi:10.21608/jpp.2011.85531

Cited by 9 publications

(10 citation statements)

References 2 publications

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“…These results showed the attendance of epistasis and the complex genetic model was found to be satisfactory for illustrative the inheritance of the abovementioned characters in the corresponding crosses. These results are in agreement with those obtained by Sultan et al [37] and Said et al [29].…”

Section: Types Of Gene Actionsupporting

confidence: 94%

“…Thus, reduction percentages were 4.5%, and 2.2% in the two crosses compared with WI. When plants were exposed to water stress at the stage among stem elongation and pollination time was reduced the NG/S than in a well-irrigated environment [9,37]. Furthermore, the means for the TGW differ from 44.7 to 57.1 g under WI and from 41.9 to 54.91 g under DS.…”

Section: Mean Performancementioning

confidence: 92%

“…The contribution of (d) in the inheritance of DH and DM was also stated by Raza et al [41], Attri et al [42] and Saleem et al [44] for proline content. Moreover, Sultan et al [37], Patel et al [43] and Sharma et al [20] reported additive genes were controlled traits of yield components in the various wheat crosses.…”

Section: Types Of Gene Actionmentioning

confidence: 99%

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Breeding Enrichment of Genetic Variation of Grain Yield and Its Attributes in Bread Wheat under Drought Stress and Well Irrigation

Swelam¹,

Salem²,

Hassan³

et al. 2022

Phyton

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Drought stress (DS) is one of the most critical environmental abiotic stresses for wheat production in the arid environments. Selection of high-yielding genotypes tolerant to DS can play a significant role in mitigation the negative impacts associated with DS. In the present study, generation means analysis (GMA) was used to study the performance of two crosses under well irrigation (WI) and deficit irrigation [cross I (Line 44 × Shandweel-1) and cross II (Line 20 × Sakha 93)]. Significant differences were observed for days to heading (DH), days to maturity (DM), plant height (PH), spike length (SL), number of spikes per plant (NS/P), number of grains per spike (NG/S), thousand-grain weight (TGW), grain yield per plant (GY/P), and proline content (PC) in the six populations of the two crosses within each irrigation level. Cross II had early maturity and the highest PC, NS/P, TGW, and GY/P regardless of the irrigation level. Cross I showed positive significant relative heterosis and heterobeltiosis for GY/P under the two irrigation levels. The inheritance of characters of cross I revealed additive, dominant, and epistatic effects, which varied with trait and stress. Additive genetic effects predominated in DH, SL, and PC, while non-additive were found in DM, NS/P, NG/S, and GY/P. Narrow-sense heritability estimates (h 2 n ) were high for DH and PC, moderate to high for PH and SL, moderate for DM, NG/S, NS/P, and TGW, and low for GY/P . Based on different drought indices the populations BC 1 , BC 2 , F 1 , and P 1 of cross II and BC1 of cross I were more tolerant to drought stress. Therefore, PC, TGW and DH can be used as selection indicators to improve wheat for drought tolerance in early generations and other yield components traits in late generations. The second cross (Line 20 × Sakha 93) shows promise and is of interest to a drought tolerance breeding program, where wheat breeders can use recombinant breeding strategies to construct desirable drought stress genes. Correlation and path coefficient revealed that TGW and PC were the main contributor in grain yield in both environments.

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Section: Types Of Gene Actionsupporting

confidence: 94%

Section: Mean Performancementioning

confidence: 92%

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Breeding Enrichment of Genetic Variation of Grain Yield and Its Attributes in Bread Wheat under Drought Stress and Well Irrigation

Swelam¹,

Salem²,

Hassan³

et al. 2022

Phyton

View full text Add to dashboard Cite

show abstract

“…Negative and significant estimates of GCA effects were obtained for Line 1 (P 6 ) under the two irrigation conditions. These results are partially in harmony with Sultan et al, (2011) who pointed to the importance of additive gene effects in the inheritance of plant height and spikes number plant -1 , while, additive, dominance and epistasis were the important in the inheritance of grains number spike -1 , 100-grain weight and grain yield plant -1 at most cases under both normal and water stress conditions. Moreover, additive genetic variance played the greatest and the important role in the inheritance of plant height, spikes number plant -1 and grain yield plant -1 at most cases under both water conditions.…”

Section: General Combining Ability Effectssupporting

confidence: 81%

Combining Ability of wheat yield and Some yield Attributes Under Normal and Water Stress Conditions

EL-Banna

Gomaa

Nassar

et al. 2014

Journal of the Advances in Agricultural Researches

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“…Meanwhile, they were moderate to high (>1) for yield-related metric traits (growing degree days to maturity, flag leaf area, plant height, peduncle length, spike length, spikelets per spike, grains/spike, and grain yield/plant) under normal irrigation [64]. Under drought, the low GA for leaf attitude, auricle hairiness, spike length, and spikelets/spike was observed, while it was moderate to high for traits flag leaf area, plant height, Grains/spike, and Grain yield/plant [65].…”

Section: Genetic Variability Heritability and Genetic Advancementioning

confidence: 99%

Exploration of Genetic Pattern of Phenological Traits in Wheat (Triticum aestivum L.) under Drought Stress

Ishaaq¹,

Farooq²,

Tahira³

et al. 2022

Phyton

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Drought is the major detrimental environmental factor for wheat (Triticum aestivum L.) production. The exploration of genetic patterns underlying drought tolerance is of great significance. Here we report the gene actions controlling the phenological traits using the line × tester model studying 27 crosses and 12 parents under normal irrigation and drought conditions. The results interpreted via multiple analysis (mean performance, correlations, principal component, genetic analysis, heterotic and heterobeltiotic potential) disclosed highly significant differences among germplasm. The phenological waxiness traits (glume, boom, and sheath) were strongly interlinked. Flag leaf area exhibits a positive association with peduncle and spike length under drought. The growing degree days (heat-units) greatly influence spikelets and grains per spike, however, the grain yield/plant was significantly reduced (17.44 g to 13.25 g) under drought. The principal components based on eigenvalue indicated significant PCs (first-seven) accounted for 79.9% and 73.9% of total variability under normal irrigation and drought, respectively. The investigated yield traits showed complex genetic behaviour. The genetic advance confronted a moderate to high heritability for spikelets/spike and grain yield/plant. The traits conditioned by dominant genetic

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Genetic Parameters for Some Yield and Yield Components Characters in Four Crosses of Bread Wheat Under Two Water Regime Treatments

Cited by 9 publications

References 2 publications

Breeding Enrichment of Genetic Variation of Grain Yield and Its Attributes in Bread Wheat under Drought Stress and Well Irrigation

Breeding Enrichment of Genetic Variation of Grain Yield and Its Attributes in Bread Wheat under Drought Stress and Well Irrigation

Combining Ability of wheat yield and Some yield Attributes Under Normal and Water Stress Conditions

Exploration of Genetic Pattern of Phenological Traits in Wheat (Triticum aestivum L.) under Drought Stress

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