水稻穗顶部退化突变体L的遗传分析.pdf

作物学报 ACTA AGRONOMICA SINICA 2011, 37(11): 1935−1941 /zwxb/ ISSN 0496-3490; CODEN TSHPA9 E-mail: xbzw@ DOI: 10.3724/SP.J.1006.2011.01935 水稻穗顶部退化突变体L-05261 的遗传分析 * 高素伟 张 玲 毛毕刚 王久林 程治军 万建民 , 100081 : , L-05261 , 2 2 L-05261 F 1 , F2 , L-05261 ×IRAT129 F , 63 1; BC F , ︰ 2 1 1 7 : 13 3 182 , 3458 qPAA3qPAA4qPAA5 qPAA8 4 QTL, , 46.32%, : ; ; ; QTL; Genetic Analysis of Rice Mutant L-05261 with Panicle Apical Abortion Trait * GAO Su-Wei, ZHANG Ling, MAO Bi-Gang, WANG Jiu-Lin, CHENG Zhi-Jun , and WAN Jian-Min Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China Abstract: In rice, panicle apical abortion (PAA) has a detrimental effect on the final yield. Using one PAA mutant L-05261, we found that the occurrence of PAA is related to the excess accumulation of hydrogen peroxides (H O ). The hybrid plants of four 2 2 cross-combinations from two less PAA varieties of 9311 and PA64, and two non-PAA varieties of Balilla and IRAT129 crossed to L-05261 showed PAA phenotypes, on their F2 populations, the percentages of PAA showed a continuous distribution and a bias towards non-PAA parents. The ratio of PAA plants and non-PAA plants in the L-05261 ×IRAT129