生物
开枪
多基因
遗传力
花梗
遗传建筑学
数量性状位点
主基因
基因座(遗传学)
植物
遗传变异
特质
遗传模型
遗传分析
园艺
基因
遗传学
计算机科学
程序设计语言
作者
Xiaohua Du,Hu Wang,Jiayi Liu,Xiaopei Zhu,Jinyan Mu,Xiandan Feng,Huichao Liu
标识
DOI:10.1016/j.scienta.2022.111204
摘要
The shoot architecture of Viola cornuta affects its uniformity, aesthetics, and lodging resistance. Understanding the genetic variance in the traits of the shoot architecture has practical significance for V. cornuta breeding. However, not much is currently known about these traits. In this study, we analyzed the genetic basis of seven traits (plant height-PH, plant width-PW, plant width/plant height-PW/PH, internode length-IL, shoot number-SN, shoot angle-SA, and pedicel length-PL) in V cornuta using major gene plus polygene mixed inheritance analysis based on four generations (P1, P2, F1, and F2). These seven traits had varied coefficients of variation (CVs), among which that of the IL was the highest. Significant positive correlations (correlation coefficient > 0.5) were observed for two groups: 1) PH and PW/PH and 2) IL and PH and PW. Genetic analysis revealed that V. cornuta PH adhered to the A-1 model via one additive major gene. The optimal model for PW, PW/PH, and SA was the B-4 model, namely two equally additive major genes model. IL, SN, and PL could be described by the B-2 genetic model via two additive major genes. Additionally, the heritability of these major genes was close to (and sometimes exceeded) 50%, indicating that the shoot architecture traits of V. cornuta were mainly controlled by genetic factors. Our findings may provide new theoretical data for quantitative trait locus mapping and breeding of desirable shoot architectures in V. cornuta.
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