摘要
以黄淮麦区 1 3个具不同产量结构特征的高产品种 (系 )为试材 ,探讨了籽粒生长 3个阶段的持续时间、灌浆速率和干物质积累量 ,及其与粒重的关系。结果表明 :籽粒的灌浆速率和干物质积累量在籽粒生长各阶段均存在显著的品种间差异 ;籽粒灌浆速率 ,特别是第 2阶段灌浆速率对籽粒增重有重要影响 ,是籽粒增重的决定因子 ;千粒重与第 2阶段灌浆速率呈极显著的正相关 ,第 2阶段灌浆速率显著增高是大粒品种的重要特征。饱满度在 6 5 %以上籽粒饱满 ,在 4 5 %以下籽粒秕瘦。
In this paper, the ralationship of grain-filling and grain weight was analysed about 13 high-yeild wheat varaties in Huanghui plain. The result showed that the grain-filling rate and amounts of dry matter accumulation were significantly different between the varieties at each stage, and the grain weight depended on the grain-filling rate, especially on the grain-filling in 2nd stage which was the determinant facter of the grain weight increased. There was significantly correlation coefficients between 1000-kernel weight and the grain-filling rate in 2nd stage. Which was also the important character of big kernel varieties. It was good grain plumpness above 65%, but bad below 45%.
出处
《西北农业学报》
CAS
CSCD
2002年第3期33-35,共3页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家杨凌生物技术育种中心项目 ( 1994-4 )
关键词
灌浆
粒重
小麦
品种
灌浆速率
物质积累量
产量
High-yield wheat varieties
Grain-filling rate
Amounts of dry matter accumulation
