摘要
本试验通过相关和基因型通径分析,研究了燕麦生育天数与各阶段发育及其它性状的关系。结果表明:抽穗前天数和灌浆天数是影响生育期长短的决定性因素。相关分析指出,抽穗前天数与穗粒数、平均穗籽实增重/日及株高等呈高度正相关;灌浆天数与穗粒数、平均穗籽实增重/日等呈高度负相关的同时,与粒重呈极显著的正相关。因此,选抽穗早、灌浆天数短的材料时,要兼顾对穗粒数、粒重等重要产量性状的影响。抽穗前天数的遗传力高,灌浆天数的遗传力低,前者适于在早代选择,后者则应着重在晚代进行选择。
The methods of correlation and path-coefficient analysis were used to study the relations between maturity and other traits. The results show th- at days to heading and length of fruiting period were most important facts for maturity. Kernals per panicle, panicle grains growth rate and plant height were positively correlated with days to heading, but negitively correlated with length of fruiting period. Positive correlation was also found between gerain weight and length of fruiting period. Broad heritability was high for days to heading, and low for length of fruiting period. Thus, early generation selection was advocated for date of heading, and late generation selection for length of fruiting period.
关键词
燕麦
生育期
相关分析
通径分析
Oat correlations path-coefficient analysis selection
