Journal of Wheat Research

2017

DOI: 10.25174/2249-4065/2017/67482

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Heterosis and Inbreeding Depression in Relation to Heterotic Parameters in Bread Wheat (<I>Triticum aestivum</I> L.) under Late Sown Condition

Jaydev Kumar¹,

et al.

Abstract: and inbreeding depression in relation to heterotic parameters in bread wheat (Triticum aestivum L.) under late sown condition.

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Heterosis and Inbreeding Depression3

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Cited by 7 publications

(11 citation statements)

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“…These results are in close agreement with Yadav and Singh (2011); Hamam and Negim (2014) ;Said, 2014;El-Hawary, 2016;Jaiswal et al, 2018. These results exhibit the importance of inbreeding depression and heterosis jointly in the positive selection process. These results are in good agreement with those reported by Kumar et al (2017), Jaiswal et al (2018) and Kumar et al (2018).…”

Section: Heterosis and Inbreeding Depressionsupporting

confidence: 93%

“…,Kumar et al (2017), Al-Azab et al (2017), Abd El-Hady et al (2018,Koubisy (2019) andFeltaous et al (2020).…”

mentioning

confidence: 97%

“…,Moussa (2010),El-Aref et al (2011), Zaazaa et al (2012,Amin (2013), Abd El-Rahman (2013),Hamam and Negim (2014), El-Hawary and El-Shafey (2016),Kumar et al (2017) andAbd El-Hady et al (2018).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Genetic parameters controlling the inheritance of glaucousness and yield traits in bread wheat

¹

,

²

,

³

et al. 2022

Braz. J. Biol.

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Wheat breeders frequently use generation mean analysis to obtain information on the type of gene action involved in inheriting a trait to choose the helpful breeding procedure for trait improvement. The present study was carried out to study the inter-allelic and intra-allelic gene action and inheritance of glaucousness, earliness and yield traits in a bread wheat cross between divergent parents in glaucousness and yield traits; namely Mut-2 (P1) and Sakha 93 (P2). The experimental material included six populations, i.e. P1, P2, F1, F2, BC1, and BC2 for this wheat cross. A randomized complete block design with three replications was used, and a six parameters model was applied. Additive effects were generally more critical than dominance for all studied traits, except for plant height (PH) and grain yield/plant (GYPP). The duplicate epistasis was observed in spike length; SL, spikes/plant; SPP and days to heading; DTH. All six types of allelic and non-allelic interaction effects controlled SL, GYPP, DTH and glaucousness. All three types of epistasis, i.e. additive x additive, additive x dominance, and dominance x dominance, are essential in determining the inheritance of four traits (SL, GYPP, DTH and glaucousness). Dominance × dominance effects were higher in magnitude than additive × dominance and additive × additive in most traits. The average degree of dominance was minor than unity in six traits (glaucousness, grains/spike, spike weight, days to maturity, 100-grain weight and SL), indicating partial dominance and selection for these traits might be more effective in early generations. Meanwhile, the remaining traits (PH, SPP, GYPP and DTH) had a degree of dominance more than unity, indicating that overdominance gene effects control such traits and it is preferable to postpone selection to later generations. The highest values of narrow-sense heritability and genetic advance were recorded by glaucousness trait followed by SL and SPP, indicating that selection in segregating generations would be more effective than other traits.

“…These results are in close agreement with Yadav and Singh (2011); Hamam and Negim (2014) ;Said, 2014;El-Hawary, 2016;Jaiswal et al, 2018. These results exhibit the importance of inbreeding depression and heterosis jointly in the positive selection process. These results are in good agreement with those reported by Kumar et al (2017), Jaiswal et al (2018) and Kumar et al (2018).…”

Section: Heterosis and Inbreeding Depressionsupporting

confidence: 93%

“…,Kumar et al (2017), Al-Azab et al (2017), Abd El-Hady et al (2018,Koubisy (2019) andFeltaous et al (2020).…”

mentioning

confidence: 97%

“…,Moussa (2010),El-Aref et al (2011), Zaazaa et al (2012,Amin (2013), Abd El-Rahman (2013),Hamam and Negim (2014), El-Hawary and El-Shafey (2016),Kumar et al (2017) andAbd El-Hady et al (2018).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Genetic parameters controlling the inheritance of glaucousness and yield traits in bread wheat

¹

,

²

,

³

et al. 2022

Braz. J. Biol.

View full text Add to dashboard Cite

Wheat breeders frequently use generation mean analysis to obtain information on the type of gene action involved in inheriting a trait to choose the helpful breeding procedure for trait improvement. The present study was carried out to study the inter-allelic and intra-allelic gene action and inheritance of glaucousness, earliness and yield traits in a bread wheat cross between divergent parents in glaucousness and yield traits; namely Mut-2 (P1) and Sakha 93 (P2). The experimental material included six populations, i.e. P1, P2, F1, F2, BC1, and BC2 for this wheat cross. A randomized complete block design with three replications was used, and a six parameters model was applied. Additive effects were generally more critical than dominance for all studied traits, except for plant height (PH) and grain yield/plant (GYPP). The duplicate epistasis was observed in spike length; SL, spikes/plant; SPP and days to heading; DTH. All six types of allelic and non-allelic interaction effects controlled SL, GYPP, DTH and glaucousness. All three types of epistasis, i.e. additive x additive, additive x dominance, and dominance x dominance, are essential in determining the inheritance of four traits (SL, GYPP, DTH and glaucousness). Dominance × dominance effects were higher in magnitude than additive × dominance and additive × additive in most traits. The average degree of dominance was minor than unity in six traits (glaucousness, grains/spike, spike weight, days to maturity, 100-grain weight and SL), indicating partial dominance and selection for these traits might be more effective in early generations. Meanwhile, the remaining traits (PH, SPP, GYPP and DTH) had a degree of dominance more than unity, indicating that overdominance gene effects control such traits and it is preferable to postpone selection to later generations. The highest values of narrow-sense heritability and genetic advance were recorded by glaucousness trait followed by SL and SPP, indicating that selection in segregating generations would be more effective than other traits.

“…These results exhibit the important of inbreeding depression and heterosis jointly in positive selection process. These results are in well agreement with those obtained by Kumar et al (2017), Jaiswal et al (2018) and Kumar et al (2018).…”

Section: Heterosis and Inbreeding Depressionsupporting

confidence: 93%

“…of kernels/spike in cross 2 under normal conditions, biological yield in cross 1 under normal conditions, biological yield in both crosses under both environments, Grain yield in cross 1 under both environments, and grain yield in cross 2 under normal conditions. These results supported by results stated by Kumar et al (2017) and Kumar et al (2018). In the contrast, significant or highly significant positive inbreeding depression was exhibited in plant height in cross 1 under stress conditions, no.…”

Section: Heterosis and Inbreeding Depressionsupporting

confidence: 91%

Inheritance of Yield and its Components in Two Bread Wheat Crosses Under Normal and Water Stress Conditions

2020

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The present investigation was conducted at Shandaweel Agricultural Research Station-Field Crops Research Institute (FCRI), Agricultural Research Center (ARC) through three successive winter seasons from 2015/16 to 2017/18. The experimental material included six populations i.e. P 1 , P 2 , F 1 , F 2 , BC 1 , and BC 2 for two bread wheat crosses viz Shandaweel 1 × Sids 1 and Line 1 × Sids 12. Six parameters model was applied for studying inheritance of seven agronomic traits; days to heading (DH), no. of spikes/plant (S/P), plant height (PLH), biological yield / plant (BY), grain yield/plant (GY),100-grain weight (100-KW), and no. of kernels/spike (K/S) under normal irrigation (5 irrigations) and water stress conditions (3 irrigations). The results showed significant or highly significant differences among the included materials. Mean performance of F 1 generation in cross 1 and cross 2 override mid-parents or/and best parent for most of the reviewed traits under investigation except plant height in cross 2 under stress conditions. The results of scaling tests indicated that at least one of these scales is significant and additive-dominance model is inadequate, consequently six parameters model is applicable. The results indicated that gene main effect was highly significant for all the studied traits. Additive gene effect was significant for most of the traits in combinations of the crosses and environments. The results showed that non-allelic interactions were significant or highly significant with positive sign for some traits and with negative sign for the others. The results indicated that duplicate epistasis was predominant while complementary epistasis was found only in one case. The average degree of dominance indicated presence of partial, complete, and over dominance. Broad, narrow sense heritability and genetic advance values were moderate to high. The results of the current investigation revealed that the included material can be used for producing high yielding lines under stress water conditions deploying selection in early generation for some traits and in advanced generation in the others.

Estimation of Hetrosis in F1 Hybrids of Bread Wheat Genotypes

Fareed,

Keerio,

Mari

et al. 2024

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The experiment was conducted for estimation of the heterosis in F1 hybrids in wheat genotypes. The research was conducted at the experimental field of Seed Production Development Centre, Sindh Agriculture University Tandojam during Rabi growing season 2019-20. The experiment was laid-out in randomized complete block design (RCBD) using three replications. The performance of parents and their hybrids, and heterotic effects were measured in various aspects like earliness characters (days taken to 75% heading, days taken to 75% maturity), morphological and yield traits like plant height, tillers plant-1, yield plant-1, and a physiology related trait; relative water content. The study consisted of six varieties and their six F1 hybrids. The parents used were TD-1, Benazir-2013, TJ-83, Hamal, Imdad-2005, Kiran-95 and their crosses were as TD-1 × Hamal, TD-1 × Benazir-2013, Benazir-2013 × TD-1, TJ-83 × Benazir-2013, TJ-83 × Imdad, Kiran-95 ×Benazir-2013. Results revealed that all the parents and hybrids were highly significant for all the parameters studied at P<0.01 level. The F1 hybrids Benazir-2013 × TD-1, TD-1 × Benazir-2013, TD-1 × Hamal and Kiran -95 × Benazir-2013 had showed better response in mid parent heterosis and heterobeltiosis for most of the traits except plant height. On the basis of current findings, it could be concluded that these cross combinations may be used in bread wheat for yield improvement

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