在DH或RIL群体中两对重叠基因控制性状的定位

遗传 ›› 2003, Vol. 25 ›› Issue (1): 57-59.

在DH或RIL群体中两对重叠基因控制性状的定位

章元明;黄方;喻德跃;盖钧镒

南京农业大学作物遗传与种质创新国家重点实验室，南京 210095

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-02-10 发布日期:2003-02-10

Mapping the Trait Controlled by Two Duplicate Genes in the DH or RIL Population

ZHANG Yuan-Ming;HUANG Fang;YU De-Yue;GAI Jun-Yi

State Key Lab of Crop Genetics and Germplasm Enhancement,Nanjing Agricultural University，Nanjing 210095,China

Received:1900-01-01 Revised:1900-01-01 Online:2003-02-10 Published:2003-02-10

摘要/Abstract

摘要： 在DH或RIL群体中，若只找到与两对重叠基因控制性状连锁的1个分子标记，可采用极大似然法估计控制性状的一对基因与分子标记间的重组率，并推导出重组率估计值的标准误公式。Monte Carlo模拟显示，重组率估计值的无偏性较好，其变异随时样本容量或重组率的增加而减少。

关键词: 重组率, Monte Carlo模拟, RIL群体, DH群体

Abstract: While there is linkage between molecular marker and trait controlled by two duplicate genes in the DH or RIL population,the recombination rate (RR) between molecular marker and one gene controlling the above trait may be estimated by the maximum likelihood method.Moreover,the standard deviation of RR was also obtained in this paper.Finally,the results from Monte Carlo simulation with 3000 replications showed that the unbiasedness of RR for various sample size and RR was good,and the variation of the estimated value of RR decreased with the increase of sample size or RR.

章元明，黄方，喻德跃，盖钧镒. 在DH或RIL群体中两对重叠基因控制性状的定位[J]. 遗传, 2003, 25(1): 57-59.

ZHANG Yuan-Ming, HUANG Fang, YU De-Yue, GAI Jun-Yi. Mapping the Trait Controlled by Two Duplicate Genes in the DH or RIL Population[J]. HEREDITAS, 2003, 25(1): 57-59.

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