Effect of five modified mass selection cycles on combining ability in two Chinese maize populations

Yong, Hongjun; Tang, Juan; Zhao, Xiaoxi; Fengyi, Zhang; Yang, Zhaohui; Yi, Li; Li, Mingshun; Zhang, Degui; Zhang, Hao; Weng, Jianfeng; Han, Jienan; Peng, Bo; Li, Xinhai

doi:10.1007/s10681-020-02591-0

Cited by 4 publications

(7 citation statements)

References 22 publications

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“…Crosses produced higher grain yield, which varied from 62.80g/plant (L9 × T3) to 92.12g/plant (L7 × T2) which was higher than parental genotypes. Similar to the present findings, many scientists reported higher grain yield among maize hybrids compared to parental genotypes [25,[28][29][30]. The parental genotypes, suggesting heterosis for these traits in agreement with the previous reports [31].…”

Section: Discussionsupporting

confidence: 93%

“…In line with the present study, maize progenies were previously reported to flower and mature early than parental genotypes due to additive gene effects in the inheritance of these traits [25,28]. Parents L7, L9, L11, L8, T2, and L2 good general combiner for plant height and their crosses L5 × T3 followed by L4 × T3, L14 × T2, L10 × T2, L9 × T2, L8 × T3 and L3 × T1 had highest negative significant SCA effects for plant height has been reported previously [23,25,28]. Crosses L14 × T3, L2 × T2, L5 × T3, L11 × T3 and L6 × T1 showed positive and significant SCA effects for the 100-grain weight which were greater than other crosses and some parental genotypes ( Table 3).…”

Section: Discussionsupporting

confidence: 90%

“…Similarly, variance due to GCA interaction with an environment lower than variance due to SCA interaction with the environment for all the trait. Similar finding proposed by [25,31]. Maximum genetic advance exhibited by plant height followed by ear height, days to 75 percent brown husk and grain yield.…”

Section: Discussionsupporting

confidence: 87%

“…The current study improving grain yield and nutritional value of quality protein maize to identify suitable hybrids for further selection and breeding. Many researchers have also reported significant variations among genotypes, environments and their interactions for yield,yieldrelated traits and quality traits in maize [23][24][25][26][27]. Line by location, tester by location, and line × tester by location line tester and line × tester main effects were significant for most traits.…”

Section: Discussionmentioning

confidence: 97%

“…Assessment of heterosis and combining ability is useful for developing superior hybrids for improving yield and quality traits [23][24][25]. The current study improving grain yield and nutritional value of quality protein maize to identify suitable hybrids for further selection and breeding.…”

Section: Discussionmentioning

confidence: 99%

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Understanding the genetics of important traits in quality protein maize (Zea maysL.) by Line × Tester analysis

Bharti

Dubey

Kumar

et al. 2020

Preprint

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Maize (Zea mays L.) is among the top ten most valuable crops and livestock products. Maize demand and production are continuously rising. The nutritionally rich quality proteins maize (QPM) has almost two times as much lysine as well as tryptophan, amino acids which then the conventional maize varieties. In this study, genetics of important traits in quality protein maize were determined using a Line by Tester matting design. The 45 hybrids were obtained via Line by Tester crossing of 15 lines and 3 testers. The parents and their hybrids were evaluated under two environments. A significant amount of variation was recorded for most of the traits studied. Parental genotypes L2, L6, T2, L8, L7 and L14, exhibited negative and considerable general combining ability (GCA) effects for days to flowering and maturity. L7 × T2, L13 × T3, L10 × T1, L1 × T1, L9 × T2, L5 × T1, L12 × T2, L11 × T3, L10 × T3, L14 × T1 and L6 × T1 were identified with suitable yield and component traits. Crosses L5 × T1, L3 × T1, L12 × T2, L7 × T3, L1 × T2 and L13 × T1 were identified for quality traits. Heterosis over the mid parent crosses L13 × T1 showed highest negative and significant followed by L6 × T1, L12 × T2, L14 × T2 and L2 × T1 for days to 50 per cent tasselling. A significant correlation for the lysine content was determined between F1 mean and specific combining ability (SCA) effects. Overall, this work provides the useful insights into the genetics of important agronomical and biochemical traits of quality protein maize.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Understanding the genetics of important traits in quality protein maize (Zea maysL.) by Line × Tester analysis

Bharti

Dubey

Kumar

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

Genomic selection to introgress exotic maize germplasm into elite maize in China to improve kernel dehydration rate

et al. 2021

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Combining ability of tropical × temperate maize inducers for haploid induction rate, R1-nj seed set, and agronomic traits

et al. 2023

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In vivo maternal haploid induction in isolation fields is proposed to bypass the workload and resource constraints existing in haploid induction nurseries. A better understanding of combining ability and gene action conditioning traits related to hybrid inducers is necessary to set the breeding strategy including to what extent parent-based hybrid prediction is feasible. This study aimed to evaluate the following in tropical savanna in the rainy and dry seasons for haploid induction rate (HIR), R1-nj seed set, and agronomic traits: 1) combining ability, line per se, and hybrid performance of three genetic pools; 2) genetic parameters, the modes of gene action, and heterosis; and 3) the relationships of inbred–general combining ability (GCA) and inbred–hybrid performance. Fifty-six diallel crosses derived from eight maize genotypes were evaluated in the rainy season of 2021 and the dry season of 2021/2022. Reciprocal cross effects including the maternal effect barely contributed to the genotypic variance for each trait observed. HIR, R1-nj seed set, flowering dates, and ear position were highly heritable and additive inherited, while ear length showed dominant inheritance. The equal importance of additive and dominance effects was found for yield-related traits. Temperate inducer BHI306 was the best general combiner for the HIR and R1-nj seed set, followed by two tropical inducers, KHI47 and KHI54. The ranges of heterosis were trait-dependent and slightly influenced by the environment, where hybrids in the rainy season consistently had higher heterosis than those in the dry season for each trait observed. Both hybrid groups derived from tropical × tropical and tropical × temperate inducers showed taller plants, larger ear size, and higher seed sets than the corresponding parents. However, their HIRs were still below the standard check of BHI306. The implications of genetic information, combining ability, and inbred–GCA and inbred–hybrid relationships on breeding strategies are discussed.

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Effect of five modified mass selection cycles on combining ability in two Chinese maize populations

Cited by 4 publications

References 22 publications

Understanding the genetics of important traits in quality protein maize (Zea maysL.) by Line × Tester analysis

Understanding the genetics of important traits in quality protein maize (Zea maysL.) by Line × Tester analysis

Genomic selection to introgress exotic maize germplasm into elite maize in China to improve kernel dehydration rate

Combining ability of tropical × temperate maize inducers for haploid induction rate, R1-nj seed set, and agronomic traits

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