南方农业学报2012，Vol.43Issue(2)：151-154,4.DOI:10.3969/j:issn.2095-1191.2012.02.151
转几丁质酶基因水稻抗纹枯病性及农艺性状遗传特性
Inheritance analysis on sheath blight resistance and agronomic traits of transgenic rice transformed with chitinsase-gene
摘要
Abstract
[Objective ]The present experiment was conducted to study the inheritance of sheath blight resistance in transgenic rice and its crossing combinations and variations in some agronomic traits to reasonably apply transgenic rice in breeding of disease resistance. [Method]Transgenic rice line Haizhuan A, transformed with chitinase-gene RC24, was used as male parent to cross with non-transgenic female parent Zhuxian B, and the sheath blight resistance was analyzed in their hybrid F| and F2 offsprings to find out the inheritance characteristics of sheath blight resistance and variations in agronomic traits in Haizhuan A. [Result]The results showed that, compared to female parent Zhuxian B, transgenic Huaizhuan A showed higher resistance to sheath blight and variations in agronomic traits in terms of 44.2% increase in grain number per panicle and 12.1% decrease in 1000-grain weight. The resistance to sheath blight in Huaizhuan A was due to polygenic quantitative heredity traits located on major genes, while its grain number per panicle and 1000-grain weight still belonged to typical quantitative heredity. Further, the coefficient of variation of resistance and two traits in Haizhuan A were higher than that of Zhuxian B, indicating that their stability decreased remarkably. [Conclusion]It has been observed that some other resistance genes in transgenic rice enhanced its resistance, which was further influenced by transformed gene. Extra resistance gene may induce some variations in agronomic traits, but can not change the inheritance pattern of the traits.关键词
转几丁质酶基因水稻/海转A/纹枯病抗性/农艺性状/遗传特性Key words
transgenic rice transformed with chitinsase-gene/ Haizhuan A/ resistance to sheath blight/ agronomic trait/ inheritance characteristics分类
农业科技引用本文复制引用
袁红旭,刘晚苟,刘月廉,郭建夫,李月仁..转几丁质酶基因水稻抗纹枯病性及农艺性状遗传特性[J].南方农业学报,2012,43(2):151-154,4.基金项目
转基因生物工程新品种培育科技重大专项项目(2009ZX08011-02913) （2009ZX08011-02913）
湛江师范学院教授专项基金项目[(ZL0806)2009-1] （ZL0806）
