| 蓖麻株高性状主基因+多基因遗传分析 |
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| 引用本文： | 崔月,陆建农,施玉珍,殷学贵,张启好.蓖麻株高性状主基因+多基因遗传分析[J].作物学报,2019,45(7):1111-1118. |
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| 作者姓名： | 崔月 陆建农 施玉珍 殷学贵 张启好 |
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| 作者单位： | 岭南师范学院;广东海洋大学农学院;广东海洋大学化学与环境学院 |
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| 基金项目： | This study was supported by the National Natural Science Foundation of China(31271759);the Guangdong Provincial Science and Technology Projects(2013B060400024);the Guangdong Provincial Science and Technology Projects(2014A020208116);the Guangdong Provincial Science and Technology Projects(2016A020208015);Project of Enhancing School with Innovation of Guangdong Ocean University(GDOU2013050206) |
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| 摘 要： | 本研究选用蓖麻YC2×YF1高、矮秆组合的2组6世代群体(P1、P2、F1、B1、B2和F2),对株高性状进行了主基因+多基因混合遗传模型分析。结果表明,蓖麻株高受1对主基因和多基因共同控制。2组群体在B1、B2和F2三个分离世代中主基因遗传率分别为37.05%/49.57%、30.51%/34.48%和43.98%/43.64%;主穗位高和主茎节数均受2对主基因和多基因共同控制,且主基因的互作效应显性效应加性效应。3个分离世代中,2组群体主穗位高主基因遗传率分别为67.91%/92.72%、86.89%/92.13%和60.18%/66.87%,主茎节数主基因遗传率分别为91.83%/91.50%、35.22%/63.37%和85.76%/94.58%。主茎节长由多基因控制,遗传率分别为47.64%/47.64%、38.87%/38.87%和25.25%/52.71%。以上遗传模式决定了蓖麻杂种后代株高、主穗位高和主茎节长的正向超亲遗传,而主茎节数则倾向于低值亲本。因此,主穗位高和主茎节数可以作为株高的早期间接选择指标。
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| 收稿时间： | 2018-10-07 |
Genetic analysis of plant height related traits in Ricinus communis L. with major gene plus polygenes mixed model |
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| CUI Yue,LU Jian-Nong,SHI Yu-Zhen,YIN Xue-Gui,ZHANG Qi-Hao.Genetic analysis of plant height related traits in Ricinus communis L. with major gene plus polygenes mixed model[J].Acta Agronomica Sinica,2019,45(7):1111-1118. |
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| Authors: | CUI Yue LU Jian-Nong SHI Yu-Zhen YIN Xue-Gui ZHANG Qi-Hao |
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| Institution: | 1.Lingnan Normal University, Zhanjiang 524048, Guangdong, China;2.College of Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China;3.College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China |
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| Abstract: | In this study, plant height related traits in Ricinus communis L. were analyzed using the mixed major gene plus polygenes genetic model with two groups of six-generation populations (P1, P2, F1, B1, B2, and F2) derived from the cross YC2×YF1. The results revealed that the plant height was controlled by a pair of major gene and polygenes. The major-gene heritability in B1, B2, and F2 populations was 37.05%/49.57% (group I/group II), 30.51%/34.48%, and 43.98%/43.64%, respectively. The bearing height of primary raceme and the node number of main stems were all controlled by two pairs of major genes and polygenes, with the importance of major-gene genetic components in the order of epistasis >dominance >additive. In the three generations the heritability of major genes conferring the bearing height of primary raceme was 67.91%/92.72%, 86.89%/92.13%, and 60.18%/66.87%, respectively, and that of major genes conferring the node number of main stem were 91.83%/91.50%, 35.22%/63.37%, and 85.76%/94.58%, respectively. As for the length of main stem internode, it was fully controlled by polygenes, the heritability was 47.64%/47.64%, 38.87%/38.87%, and 25.25%/52.71%, respectively. The above genetic models explained the positive transgressive inheritance of plant height, the bearing height of primary raceme and the length of main stem internode as well as the similar performance to the low value parent of the node number of main stem in F1 generation. It suggested that the bearing height of primary raceme and the node number of main stem should be used as indirect selection indexes for plant height at early stage and the node number of main stem of lower value parent should not be too little in high yield breeding. |
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| Keywords: | Ricinus communis L plant height related traits major gene plus polygene model genetic analysis |
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