重组自交系群体对大豆胞囊线虫3号生理小种抗性与主要农艺性状的相关分析

Correlation between Resistance to Soybean Cyst Nematode Race No.3 and Major Agronomic Traits of Recombinant Inbred Lines

2009和2010年以绥农10与L-10杂交衍生的164个株系组成的F6和F7重组自交系群体为试验材料,利用品红染色法对大豆胞囊线虫抗性进行了鉴定。并分析了大豆胞囊线虫病3号生理小种抗病性与主要农艺性状之间的相关性,结果表明:大豆胞囊线虫病3号生理小种抗病性与生育期、节数呈显著负相关,与株高、分枝数、单株荚数、粒数、百粒重呈负相关;与种脐颜色、粒形、茸毛色无明显的相关性,与根瘤呈极显著相关。

A total of 164 F6 and F7recombinant inbred lines（RILs）,derived from ’Suinong 10’×’L-10’,was used to study relationship between resistance to Soybean Cyst Nematode race No.3 and main agronomic traits.Magenta staining identification method was used to analyze SCN female index（FI）in the RIL population.Relationship between FI and main agronomic trait was analyzed through Software SPSS 10.0.The results showed that FI was significantly correlated with growth duration and main stem nodes per plant,and negatively correlated with plant height,branch number,pods per plant,seeds and 100-seed weight.Moreover,FI had no correlation with hilum color,grain shape and pubescence color,while significantly related with nodules.