花生晚斑病抗性与产量性状的相关研究  

Correlation of Resistance to Late Leafspot and Yield Characters in Groundnut

作　　者：夏友霖[1] 赖明芳[1] 曾彦[1] 漆燕[1] 

机构地区：[1]四川省南充市农业科学研究所,四川南充637000

出　　处：《花生学报》2004年第1期28-31,共4页Journal of Peanut Science

基　　金：四川省"十五"农作物育种攻关课题

摘　　要：采用43份材料研究了花生晚斑病抗性与产量性状的关系,结果表明,单株产量与抗病性呈二次抛物线关系,抗病性对丰产性的制约程度接近20%;出仁率与抗病性近于呈负的直线关系;单株饱果数、百果重与抗病性之间表现曲线相关趋势,但相关系数远不显著。从研究结果预测,通过对抗病性、单株饱果数、百果重的选择,可选育出抗病高产品系;通过对早熟-丰产性的选择,可选育出耐病高产品系。Correlation of resistance to late leafspot and 4 yield characters were studied using 43 groundnut lines. The results showed that the correlation between the productivity per plant and resistance demonstrated a quadratic parabolic curve and the resistance restricted yield almost to the extent of 20%, while there was a negative linear correlation between shelling percentage and the resistance. The relativity between number of mature pods per plant or 100-pod weight and the resistance was almost curvilinear, but both the coefficients of correlation were not significant. It can be inferred from the results that the lines with high yield and resistance to leafspot could be bred by selection on the resistance, mature pods per plant and 100-pod weight, and the lines of high yield and tolerance to leafspot by selection on early maturity and high yield.

关 键 词：花生 晚斑病 抗性 产量性状 丰产性 出仁率 单株产量 相关系数 

分 类 号：S565.203.4[农业科学—作物学] S435.652