摘要
以汕优６３号（源限型品种）和盐粳２号（库限型品种）为材料；研究了两类型品种籽粒灌浆生理差异。主要结果：以淀粉积累来表示籽粒灌浆过程，源限型品种强、弱势粒淀粉积累是异步的，而库限型品种则是同步的；两类型品种强、弱势粒的淀粉合成酶、淀粉磷酸化酶活性和呼吸速率的变化与淀粉积累速率曲线基本吻合；内源激素ＡＢＡ（Ａｂｓｃｉｓｉｃａｃｉｄ）参与籽粒灌浆过程调节，内源ＡＢＡ水平高，强、弱势粒灌浆速率慢，反之则快。
Investigation was carried out on the grain filling physiology in rice varieties of Shanyou 63 (source limiting type) and Yanjing 2 (sink limiting type) The results indicated that: (1) The filling characteristic of strong and weak grains in source limiting type variety was asynchromous in terms of starch accumulation, but that in sink limiting type variety was synchromous; (2) The activities of starch synthase and starch phosphorylase, changes of respiration rate were in accordance with the rate of starch accumulation in two type varities; (3) Grain filling was regulated by indogenous ABA, low rate of grain filling was with high level of indogenous ABA
出处
《江苏农学院学报》
CSCD
1997年第4期19-22,共4页
Jiangsu Agricultural Research
关键词
水稻
品种
谷粒
灌浆
paddy
cultivated varieties
grains+grouting
