摘要
本文采用简单相关系数、多元回归和通径系数等不同的分析方法,分别从不同角度对纤毛鹅观草种群种子生产的数量性状与单穗籽粒产量的关系进行了系列分析。结果表明:纤毛鹅观草的穗序长度、单穗小穗数、小花数,籽粒数等各性状之间,以及各性状与单穗籽粒产量之间均有极显著的正相关。4个性状组合的复相关系数最高,控制了籽粒产量的89.53％。穗序长度和单穗籽粒数对籽粒产量有正的直接效应和间接效应,而单穗小穗数和小花数的直接效应和间接效应均为较小的负值。这表明穗序长度和单穗籽粒数是影响籽粒产量的重要因素。
The relantions of quantitative characters and grain yield of single ear of the seed production of Roegneria, ciliris population were analysed by the methods of single correlation coefficient, multiple regression and path-coefficient analysis. The resulte showed that there were significant positive correlations among the spikelet numbers, flosculous numbers and grain numbers of single ear, and the spike length, and among every character and grain yield of single ear. The coefficient of compound correlation made up of four characters was the highest, it controlled 89.53％ of the grain yield. The spike length of single ear and the grain numbers of single ear had positive direct and indirect effect to grain yield, but the spikelet numbers and fiosculous numbers of single ear had smaller negtive effect. It showed that the spike length and grain numbers of single ear are the important factors affecting the grain yield.
出处
《草业科学》
CAS
CSCD
北大核心
1990年第2期47-51,共5页
Pratacultural Science
关键词
纤毛鹅观草
籽粒产量性状
种群
Population
Grain yield
Quantitative character
Roegneria ciliris
