| 不同种植季节下水稻株高遗传分析 |
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| 引用本文： | 陈小荣,陈志彬,贺浩华,朱昌兰,彭小松,贺晓鹏,傅军如,欧阳林娟.不同种植季节下水稻株高遗传分析[J].安徽农业科学,2011(9):5139-5141,5144. |
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| 作者姓名： | 陈小荣 陈志彬 贺浩华 朱昌兰 彭小松 贺晓鹏 傅军如 欧阳林娟 |
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| 作者单位： | 江西农业大学农学院作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室; |
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| 基金项目： | 国家科技部“国家粮食丰产科技工程项目”(2006BAD02A04) |
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| 摘 要： | 目的]对不同种植季节下水稻株高进行遗传分析。方法]选择株高差异大的3个亲本CB1、CB4和CB7,配制CB1×CB4和CB7×CB4组合,建立相应的P1、F1、P2、B1、B2、F2群体,将其分为中、晚2个生产季节种植,考察了株高性状。利用主基因＋多基因混合遗传模型理论的Akaike信息准则（AIC）在B1、B2、F2代中鉴定影响数量性状的主基因存在与否,主基因存在时通过分离分析估计主基因和微效基因的遗传效应及所占总变异的分量。结果]株高在所有2个季别B1、B2、F2中均符合1对加性主基因＋加-显性多基因遗传模式,主基因遗传率为38.63%～78.53%,多基因遗传率为1.72%～36.04%,总基因型遗传率为45.52%～92.93%;2个遗传群体2季别下株高主基因加性效应值d分别为-4.56、-9.16、-7.19和-9.38,表明主基因加性效应会降低株高性状的表达。结论]水稻茎粗性状的遗传率受种植季别及所配组合的影响明显。
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| 关 键 词： | 水稻 株高 不同种植季节 主基因＋多基因混合遗传模型 遗传效应 |
Genetic Analysis on Plant Height in Rice in Different Growing Seasons |
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| CHEN Xiao-rong et al.Genetic Analysis on Plant Height in Rice in Different Growing Seasons[J].Journal of Anhui Agricultural Sciences,2011(9):5139-5141,5144. |
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| Authors: | CHEN Xiao-rong |
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| Institution: | CHEN Xiao-rong et al(Key Laboratory of Crop Physiology and Ecology & Genetics and Breeding,Ministry of Education/Key Laboratory of Crop Physiology and Ecology & Genetics and Breeding of Jiangxi Province,College of Agronomy,Jiangxi Agricultural University,Nanchang 330045) |
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| Abstract: | Objective] The aim was to carry out the genetic analysis on plant height of rice(Oryza sativa L.) cultivated in different seasons.Method] Three rice parents with great difference in plant height including CB1(83.1 cm),CB4(105.5 cm) and CB7(115.6 cm) were chosen to construct two parental combinations: CB1 × CB4 and CB7 × CB4,and the corresponding filial generations P1,F1,P2,B1,B2 and F2 were obtained.The 6 populations were planted in middle and late seasons respectively to measure their height traits.The Akaike's information criterion(AIC) of the mixed major gene and polygene model was used to indentify the existence of major genes affecting quantitative traits in B1,B2,F2 populations.When the major genes existed,the genetic effects of the major genes and polygenes and their genetic variance were estimated through segregation analysis.Result] One additive major gene plus additive-dominance polygenes was the most fitted genetic model for the trait in all B1,B2,F2 populations in two planting seasons.The heritability values of the major genes varied from 38.63% to 78.53% and those of polygenes varied from 1.72% to 36.04%,and the total heritability values were 45.52-92.93%.The additive effect d value of the two genetic populations under two planting seasons was-4.56,-9.16,-7.19,and-9.38,respectively,as suggested that additive effect of the major genes would decrease the express of the plant height trait.Conclusion] The heritability of plant height trait was affected by planting seasons and the combinations clearly as a whole. |
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| Keywords: | Rice Plant height Different planting seasons Major genes plus polygenes mixed inheritance model Genetic effect |
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