福建农业学报2012，Vol.27Issue(8)：815-820,6.
14个青贮玉米自交系抗根倒伏性状的配合力效应及通径分析
Combining Ability of and Path Analysis on Root Lodging Resistance of 14 Silage Maize Inbred Lines
摘要
Abstract
Nine silage maize inbred lines cultivated by the Crops Research Institute at Fujian Academy of Agricultural Sciences and 5 inbred lines from different heterosis groups were selected for the study. Designed by using the PlxP2 uncompleted diallel crossing of NC1I method, the 14 inbred lines' combining abilities and correlations were evaluated. In addition, with the path analysis, 9 traits including the lodging rate, plant height, ear height, stem diameter, root number, root cap diameter and so on, were correlated. The results showed that (a) the female inbred lines of Ye478 had a desirable lodging resistance, but Jiao51 was poor in that regard) and (b) the male inbred lines of MQ11-2 and MQ11-7 were desirable on lodging resistance, but not MQ11-4. The hN2, for the lodging rate was high, indicating a possibility to effectively breed lodging resistance varieties through parental breeding. The stem diameter, root number and root cap diameter significantly correlated to the root lodging resistance, but the ear height showed a significant inverse correlation with the root lodging resistance. The indirect effect of ear height and root cap diameter on the root lodging resistance was equally significant. Therefore, these traits should be closely monitored in breeding to improve maize's lodging resistance.关键词
青贮玉米/抗倒伏/配合力/通径分析Key words
silage maize/ lodging resistance/ combining ability/ path analysis分类
农业科技引用本文复制引用
廖长见,林建新,陈山虎,卢和顶..14个青贮玉米自交系抗根倒伏性状的配合力效应及通径分析[J].福建农业学报,2012,27(8):815-820,6.基金项目
福建省财政专项——福建省农业科学院科技创新团队建设项目(STIF-Y04) （STIF-Y04）
福建省科技计划项目(2011R1028-2) （2011R1028-2）
