冬小麦幼穗分化与播期的相关性分析

Correlation Analysis of the Tillering of Winter Wheat and the Seeding Time

经过对冬小麦幼穗分化与播期的相关分析研究表明:不同品种幼穗分化所经历的时间随着播期的推迟而缩短,且春性品种变化比冬性品种明显;决定小麦穗粒数的关键时期主要是小麦幼穗分化前期,该期在幼穗分化中占时间最多,且不同品种表现一致;不同品种完成幼穗分化的时期在第早期播种中有差异,中晚期播种中无差异;随着播期的推迟,三个品种的幼穗分化各阶段均向后推迟,在各阶段冬性品种穗分化进程推迟明显。

Correlation analysis of the young ears' differentiation of winter wheat and the seeding time showed that various breeds shortened their differentiating time with the postponing of the seeding time,the former period of the differentiation decided the grain number,different breeds finished their differentiation at different times when seeded at the early period,while no difference when seeded at the middle and late periods,the three breeds tested postponed their differentiation time with the postponing of the seeding time,among which the winter-quality wheat breed was most obvious.