摘要
以遗传性稳定的小麦品种 品系 和杂交分离世代为材料,通过谷蛋白溶涨指数 SIG 与SDS沉淀值的相关性分析,评价SIG在小麦品质育种中应用的可能性.15个供试小麦品种 品系 的SIG值与湿面筋含量、面筋指数、常量SDS沉淀值的正相关均达到极显著水平,SIG值可预测小麦品种 品系 的蛋白质品质.在两杂交组合的F1到F4中,微量SDS沉淀值与SIG值之间均达到极显著正相关水平;分离世代变异系数大于10%.两组合微量SDS沉淀值和SIG值的广义遗传力均表现较高.SIG法在小麦品种 品系 、分离世代单株品质指标选择方面与SDS沉淀值法高度相关,具有同等的鉴定效果,是一种样品用量少、操作简便快速、结果精确的小麦早代品质检测的有效方法.
With compared the relationship between swelling index of glutenin (SIG) and SDS sedimentation, it studied the SIG test on potentiality of utilization in pure lines, cross progenies in wheat quality breeding. SIG test in 15 wheat cultivars (pure lines) showed that it was highly significant correlated with wet gluten content , gluten index and SDS sedimentation . The SIG test may predict the protein quality in wheat pure lines. SIG test of individual plants in different progenies of Xaoyan 22×738 and Xaoyan 22×707 showed very significant correlations with their micro-SDS sedimentation values. The coefficient of variation of SIG values and micro-SDS sedimentation values in progenies of F_2, F_3 and F_4 was higher than 10%. The heritabilities in the broad sense of micro-SDS sedimentation values and SIG values in the two crosses were very high, respectively. The screen efficiency of SIG values in wheat quality detection was the same as that of SDS sedimentation test in pure lines and individual plants of separating progenies. The SIG method is proposed as a small-scale, quick, and accurate method for wheat quality detection in wheat early generation breeding.
出处
《西北植物学报》
CAS
CSCD
2004年第6期971-974,共4页
Acta Botanica Boreali-Occidentalia Sinica
基金
由农业部科技跨越计划项目农跨(2000-6)
农业部产业结构调整重大专项( 2002-02-1A)
国家杨凌农业生物技术育种中心项目资助 (2001B-5 )
关键词
小麦育种
谷蛋白溶涨指数
遗传力
wheat breeding
swelling index of glutenin (SIG)
heritability
