特种稻品种籽粒灌浆特性的初步研究

应用Ｒｉｃｈａｒｄｓ方程配合，研究了紫香糯、乌贡１号、黑珍米３个特种稻品种的籽粒灌浆特性，结果表明：３个特种稻品种所配合的Ｒｉｃｈａｒｄｓ方程的参数Ｎ的值均大于１，生长速率曲线右偏；乌贡１号前、中期的灌浆速率较平稳。紫香糯含水率峰值高于乌贡１号、黑珍米；籽粒含水率峰值出现的时间比灌浆速率峰值出现的时间要早；乌贡１号、黑珍米灌浆的临界含水率为２７％左右，而紫香糯为３３％

A Preliminary Study on Grain-Filling Characteristics of Three Special Rice Varieties

The grain-filling characteristics of three special rice varieties, Zixiangnuo, Wugong 1, and Heizhenmi, were described by Richards equation. The results showed that the N value fitted in Richards equation was greater than 1, and the growth rate curves shifted to the right. The grain-filling rate of Wugong 1 at early and middle filling stage remained steady. The maximum water content in grains of Zixiangruo was higher than that of Wugong 1 and Heizhenmi. The peak of water content occurred earlier than that of grain filling rate.The critical water content at filling stage was twenty-seven percent for Wugong 1 and Heizhenmi, and thirty-three percent for Zixiangnuo.