核农学报2012，Vol.26Issue(2)：193-197,230,6.
中二软占空间诱变品系的主要农艺性状及稻瘟病抗性
MAIN AGRONOMIC TRAITS AND RESISTANCE TO RICE BLAST OF SPACE-INDUCED MUTANT LINES OF ZHONG-ER-RUAN-ZHAN
摘要
Abstract
The main agronomic traits and resistance to rice blast of 34 space-induced lines from an elite rice cuhivar, Zhong-er-ruan-zhan were evaluated at their SP4. The resistance to blast of the mutant lines had been tested by two blast isolates previously. It was found that the mutant lines showed significant difference in plant height, effective panicles, panicle length and grains per panicle etc. from their parent. The range of variation in 1000-grain weight was the largest, followed by the seed-setting rate, and that of effective panicles was the least among all the traits thesied. Except for the line Z34, 33 mutant lines had broader resistance spectra than the wild-type based on the test with 38 different blast isolates, and all the 33 lines were also resistant to the panicle blast in the field. The result confirmed that selection for resistance to blast in lower generations was reliable. Taking account of agronomic traits and blast resistance, promising lines with resistance to blast and good agronomic characters could be selected from those mutant lines. Therefore, the elite rice germplasm with enhanced disease resistance can be produced.关键词
空间诱变品系/农艺性状/稻瘟病/抗性评价Key words
space-induced rice lines/agronomic traits/rice blast/resistance evaluation分类
农业科技引用本文复制引用
肖武名,杨祁云,王慧,刘永柱,郭涛,朱小源,陈志强..中二软占空间诱变品系的主要农艺性状及稻瘟病抗性[J].核农学报,2012,26(2):193-197,230,6.基金项目
国家863项目 （）
“十一五”国家科技支撑计划项目 （）
广东省自然科学基金重点项目 （）
广东省现代农业产业技术体系建设专项资金 （）
