水稻长粒突变体“浙恢7954-LG_2”的特性及其应用价值  

Characteristics of Long-grain Mutant "Zhehui 7954-LG_2" in Rice and Its Application Value

作　　者：徐林峰 张伟 毛光峰 童杰鹏[2] 沈圣泉[2] 

机构地区：[1]浙江勿忘农种业科学研究院,杭州310005 [2]浙江大学原子核农业科学研究所,杭州310029

出　　处：《作物研究》2013年第1期1-4,共4页Crop Research

基　　金：浙江省"8812"计划专项(2011C12020-3);浙江省公益技术研究农业项目(2011C22028);农业部公益性行业农业科技专项(2011030007)

摘　　要：用60Coγ射线(350 Gy)辐照籼型三系恢复系"浙恢7954"干种子,经诱变后代筛选,获得了1份遗传性状稳定表达的长粒突变体"浙恢7954-LG2"。经考察,"浙恢7954-LG2"除谷粒细长外,还降低了垩白率和垩白度,且生育期略有延迟,而其它主要形态、农艺性状和稻米品质性状均与"浙恢7954"相似。"浙恢7954-LG2"的长粒突变性状由显性单基因控制。配组试验表明,"浙恢"7954-LG2"仍保留了"浙恢7954"的优良特点,但明显改良了"浙恢7954"系列籼型杂交稻稻米外观品质性状。Long -grain mutant ＂Zhenhui 7954 - LG2＂ which had stable genetic characteristics, was screened and ob- tained by irradiating the Indica restorer line ＂Zhehui 7954＂ dry seeds with ^60Co -γ, ray. Compared to ＂Zhehui 7954＂, ＂Zhehui 7954 - LG2＂ had longer grain, lower chalkiness rate and chalkiness degree and longer growth period, while their others main morphological, agronomic and quality charaters were similar. Genetic analysis indicated that the long grain trait was controlled by a dominant single gene. Hybridization experiment revealed that the appearance quality of Indiea hy- brid rice from ＂Zhehui 7954 - LG2＂ was improved significantly, and the excellent combining ability was remained.

关 键 词：杂交水稻 恢复系 γ诱变 长粒突变体 稻米品质 

分 类 号：S511.035.2[农业科学—作物学]