优质稻双竹粘籽粒灌浆特性的研究

研究了双竹粘,M112和汕优64的籽粒灌浆特性。结果表明,优质稻品种双竹粘在抽穗后20天内,灌浆速度平稳,籽粒增重可以用线性方程Y=A+Bx来表达,M112和汕优64在相同时间内籽粒灌浆依其灌浆速度的变化,可分为增重缓慢和增重迅速两个阶段。因此,这两个品种的籽粒增重过程呈S形曲线,符合于Logistic方程。

A Study on Grain-filling Characteristics of High-quality Rice Cultivar,Shuang Zhuzhan

The grain-filling characteristics of three different cultivars, Shuang Zhuzhan which produces high-quality grains, M112, and Shan you 64, were studied. The results showed that the grain-filling of Shuang Zhuzhan was at a constant rate during the first 20 days after heading. Its grain weight increment could be expressed by a linear equation Y=A+BX. Whereas the grain-filling period of M112 and Shanyou 64, based on their grain-filling rates, could be divided into two phrases, the slow weight increasing phrase and the fast weight increasing phrase. Their grain weight increment, therefore, could be described as a S-shaped curve and expressed by Logistic Equation.