QTL Mapping for Plant Height and Ear Height by Using Multiple Related RIL Populations in Maize

Li, Qingchao; Li, Yongxiang; Yang, Zhao-Zhao; Cheng, Liang; Liu, Zhizhai; Li, Chunhui; Peng, Bo; Zhang, Yan; Wang, Di; WeiWei, Tan; Sun, Boxing; Shi, Yunsu; Song, Yan-Chun; Zhang, Zhi‐Ming; Pan, Guangtang; Wang, Tianyu; Li, Yu

doi:10.3724/sp.j.1006.2013.01521

Cited by 10 publications

(3 citation statements)

References 12 publications

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“…5). Many previous studies also confirmed that PH and EH are related [37]. Interestingly, we also found that there was a significant correlation between the LAE and PH (Fig.…”

Section: Discussionsupporting

confidence: 87%

Maize plant architecture trait QTL mapping and candidate gene identification based on multiple environments and double populations

Fei

Jiang

et al. 2022

BMC Plant Biol

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Background The plant architecture traits of maize determine the yield. Plant height, ear position, leaf angle above the primary ear and internode length above the primary ear together determine the canopy structure and photosynthetic efficiency of maize and at the same time affect lodging and disease resistance. A flat and tall plant architecture confers an obvious advantage in the yield of a single plant but is not conducive to dense planting and results in high rates of lodging; thus, it has been gradually eliminated in production. Although using plants that are too compact, short and density tolerant can increase the yield per unit area to a certain extent, the photosynthetic efficiency of such plants is low, ultimately limiting yield increases. Genetic mapping is an effective method for the improvement of plant architecture to identify candidate genes for regulating plant architecture traits. Results To find the best balance between the yield per plant and the yield per unit area of maize, in this study, the F2:3 pedigree population and a RIL population with the same male parent were used to identify QTL for plant height (PH), ear height (EH), leaf angle and internode length above the primary ear (LAE and ILE) in Changchun and Gongzhuling for 5 consecutive years (2016–2020). A total of 11, 13, 23 and 13 QTL were identified for PH, EH, LAE, and ILE, respectively. A pleiotropic consistent QTL for PH overlapped with that for EH on chromosome 3, with a phenotypic variation explanation rate from 6.809% to 21.96%. In addition, there were major consistent QTL for LAE and ILE, and the maximum phenotypic contribution rates were 24.226% and 30.748%, respectively. Three candidate genes were mined from the three consistent QTL regions and were involved in the gibberellin-activated signal pathway, brassinolide signal transduction pathway and auxin-activated signal pathway, respectively. Analysis of the expression levels of the three genes showed that they were actively expressed during the jointing stage of vigorous maize growth. Conclusions In this study, three consistent major QTL related to plant type traits were identified and three candidate genes were screened. These results lay a foundation for the cloning of related functional genes and marker-assisted breeding of related functional genes.

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“…5). Many previous studies also confirmed that PH and EH are related [37]. Interestingly, we also found that there was a significant correlation between the LAE and PH (Fig.…”

Section: Discussionsupporting

confidence: 87%

Maize plant architecture trait QTL mapping and candidate gene identification based on multiple environments and double populations

Fei

Jiang

et al. 2022

BMC Plant Biol

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“…Likewise, Wang et al (2018) developed RIL populations to identify QTLs for plant height and ear height which were distributed on chromosomes 1, 3, 4, 5, 7, 8, and 10. Earlier, researchers concluded the correlation between plant height and ear height (Li et al 2013) which is in the accordance with our results. Several genes governing the plant height and ear height in maize have been cloned previously, such as dwaft3 on chromosome 9 related to gibberellin synthesis (Teng et al 2013), brachytic2 on chromosome 1 responsible for polar auxin transport (Xing et al 2015), ZmGA3ox2 on chromosome 3 involved in gibberellin signal transduction pathways (Lawit et al 2010).…”

Section: Construction Of Linkage Map and Gene/qtl Analysissupporting

confidence: 93%

Genetic characterization and molecular mapping of ear height on the basis of generation mean analysis and bulked segregant analysis in maize (Zea mays)

Singh

Garg

et al. 2023

Preprint

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The genetic studies of ear height and its related traits were carried out by making crosses between two contrasting parents for ear height i.e, AKON40A (high ear placement) and LM23 (low ear placement) to generate F1 hybrids, which were selfed to produce F2 population and backcrossed with both parents to generate BC1.1 and BC1.2 generations. Generation mean analysis was performed on all six generations for a total of 12 morphological and phenological traits. The genetic components revealed the presence of additive gene action, additive × additive and additive × dominance gene interaction for ear height and plant height. Out of 284 SSR primer pairs, 146 primer pairs confirmed parental polymorphism, while nine primers were exhibited polymorphic in bulked segregant analysis (BSA). These nine primers were used for constructing linkage map in F2 population. Three linkage groups were formed in which LG1 spanned 26.9 cM on chromosome 3 while, LG2 and LG3 spanned 42.1 and 6.7 cM on chromosome 6 and 7, respectively. Gene governing the trait ear height was mapped on chromosome 6 between the SSR primers umc1979 and umc2317 having LOD value of ~ 3 and the phenotypic variance (R2) of 8.5. The prevalence of additive gene action for ear height suggested that recurrent selection can be utilized to improve source population for reducing ear placement by accumulating favourable alleles. Improved source population then can be utilized for inbred line development leading to maize hybrids having medium to low ear placement.

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“…Several stable QTLs for plant height and ear height were detected on chromosomes 1 and 10 in two F 2:3 populations 9 . Moreover, five QTL clusters for plant height and ear height were identified in 11 recombinant inbred line populations based on 787 single nucleotide polymorphisms (SNPs) 15 . Seven SNPs out of 14,401 were significantly related to ear height according to association mapping results with 159 maize inbred lines, and were co-localised to a QTL region for ear height 16 .…”

Section: Introductionmentioning

confidence: 99%

Proteomic analysis reveals that auxin homeostasis influences the eighth internode length heterosis in maize (Zea mays)

Chen

Zhou

Tian

et al. 2018

Sci Rep

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Ear height is an important maize morphological trait that influences plant lodging resistance in the field, and is based on the number and length of internodes under the ear. To explore the effect of internodes on ear height, the internodes under the ear were analysed in four commercial hybrids (Jinsai6850, Zhengdan958, Xundan20, and Yuyu22) from different heterotic groups in China. The eighth internode, which is the third aboveground extended internode, exhibited high-parent or over high-parent heterosis and contributed considerably to ear height. Thus, the proteome of the eighth internode was examined. Sixty-six protein spots with >1.5-fold differences in accumulation (P < 0.05) among the four hybrids were identified by mass spectrometry and data analyses. Most of the differentially accumulated proteins exhibited additive accumulation patterns, but with epistatic effects on heterosis performance. Proteins involved in phenylpropanoid and benzoxazinoid metabolic pathways were observed to influence indole-3-acetic acid biosynthesis and polar auxin transport during internode development. Moreover, indole-3-acetic acid content was positively correlated with the eighth internode length, but negatively correlated with the extent of the heterosis of the eighth internode length.

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QTL Mapping for Plant Height and Ear Height by Using Multiple Related RIL Populations in Maize

Cited by 10 publications

References 12 publications

Maize plant architecture trait QTL mapping and candidate gene identification based on multiple environments and double populations

Maize plant architecture trait QTL mapping and candidate gene identification based on multiple environments and double populations

Genetic characterization and molecular mapping of ear height on the basis of generation mean analysis and bulked segregant analysis in maize (Zea mays)

Proteomic analysis reveals that auxin homeostasis influences the eighth internode length heterosis in maize (Zea mays)

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