小麦品质与产量性状的相关和通径分析

CORRELATION AND PATH ANALYSIS OF YIELD AND QUALITY CHARACTERS IN WHEAT

本文以16个不同类型的品种为材料研究了氮素及干物质积累、运转和分配对小麦品质和产量性状的影响。结果表明,籽粒产量主要受粒重所制约,其干物质积累主要来自开花后的光合产物。蛋白质产量主要由籽粒产量所决定。花前和花后积氮量对蛋白含量均起重要作用,高蛋白基因型的氮运转分配效率并不一定高。蛋白质产量和成熟期总氮量可作为高产、优质的选育指标。

The effect of N and Dry matter accumulation, transportion and distribtion on wheat yield and quality characters were studied with 16 various type variety of winter wheat. The results indicated that the grain yield was controled hy grain weight, and the dry matter accumulation of grain yield mainly came from photosynthate after anthesis, protein yield was mainly determined by grain yield. The N accumulation of all before and after anthesis had a remarkable effect on protein content, but the high protein genetype might not necessarily have a high nitrogen harvest index. The protein yield and total N accumulation might be a selection criterion of high yield and good quality.