机插密度和穗肥减量对优质食味水稻品种籽粒淀粉合成的影响

陈云, 刘昆, 张宏路, 李思宇, 张亚军, 韦佳利, 张耗, 顾骏飞, 刘立军, 杨建昌

Effects of machine transplanting density and panicle nitrogen fertilizer reduction on grains starch synthesis in good taste rice cultivars

CHEN Yun, LIU Kun, ZHANG Hong-Lu, LI Si-Yu, ZHANG Ya-Jun, WEI Jia-Li, ZHANG Hao, GU Jun-Fei, LIU Li-Jun, YANG Jian-Chang

图8 穗肥减半对优质食味水稻抽穗后籽粒中淀粉合成关键酶活性的影响(2019年) NR: 正常穗肥用量; HR: 穗肥用量减半。SBE: 淀粉分支酶; GBSS: 颗粒结合态淀粉合成酶; AGP: ADP-葡萄糖焦磷酸化酶。酶活性以抽穗后12 d和16 d两次测定的平均值表示。

Fig. 8 Effects of halving panicle nitrogen fertilizer on the activities of key enzymes involved in grain starch synthesis in good taste rice cultivars in 2019 NR: normal N rate of panicle nitrogen fertilizer; HR: half normal N rate of panicle nitrogen fertilizer. SBE: starch branching enzyme; GBSS: granule-bound starch synthase; AGP: ADP-glucose pyrophosphorylase. The activities of enzymes were means of two repetitions at 12 and 16 days after heading.