摘要： 选取安徽省淮北地区7个小麦高产品种,对其籽粒灌浆过程进行了研究。结果表明,小麦籽粒灌浆进程呈"慢-快-慢"的"S"型曲线,籽粒灌浆期可分为渐增期、快增期、缓增期三个阶段。灌浆过程可以用Logistic方程拟合,方程的相关系数均大于0.980 1,达到显著水平,拟合效果良好。相关分析表明,粒重主要是由快增期持续时间和缓增期速率决定的,与整个灌浆期持续期和平均灌浆速率正相关。在小麦灌浆快增期和缓增期,灌浆速率越快,持续时间越长,干物质积累越多,粒重就越高。

关键词: 高产小麦, 灌浆特性, 粒重

Abstract: "Select 7 to its high yielding varieties of wheat in Huaibei area,the grain-filling processes were studied.The results showed that the process of grain filling was "S"curve.Wheat grain filling stage can be divided into gradual increase stage,the rapid increase stage,and slow increase period.The logistic equation was at significant level(R0.980 1).Correlation analysis showed grain-weight were decided by rapid increase stage and grain filling rate at slow increase stage and were positive with the entire grain-filling period and average grain-filling rate.In rapid increase stage and slow increase stage,faster grain-filling rate,longer duration,more dry-matter accumulation quantity and higher grain weight. "

Key words: H igh-yielding wheat, Grain filling characteristics, Grain weight

中图分类号: 

• S512.1