水稻不同生长阶段主茎增叶速度的配合力分析

COMBINING ABILITY ANALYSIS ON THE INCREASING LEAF SPEEDS OF MAIN STEMS IN THE DIFFERENT GROWTH PHASES OF RICE

利用6个水稻品种按Griffing方法四分析了不同生长阶段主茎增叶速度的配合力表现。结果表明,一般配合力效应和特殊配合力效应对各阶段增叶速度均有重要影响,但不同阶段其效应值的大小、方向、相对位次和显著性等存在较大差异。广义遗传力与狭义遗传力表现巨大差异性,且不同生长阶段广义遗传力较稳定而狭义遗传力变化较大。不管是一般配合力还是特殊配合力不同生长阶段间既有相关性,也呈独立性。

This paper studied the combining abilities of the incresing leaf speeds of main stem in the different growth phases of rice by. Grilling method withr6 ice lines.The results express that G.C.A.and S.C.A.have important roles to the increasing leaf speeds of main stems in the different growth stages, but there are still much different in size, direction, relative position and significance of values in different growth stages, broad-sense heritabilities are different from narrowsense heritabilities, and the former express stable but the later varies very much. They are relative and independent each other in different growth stages.