干湿交替灌溉对水稻花后同化物转运和籽粒灌浆的影响

徐云姬, 许阳东, 李银银, 钱希旸, 王志琴, 杨建昌

Effect of Alternate Wetting and Drying Irrigation on Post-anthesis Remobilization of Assimilates and Grain Filling of Rice

Yun-Ji XU, Yang-Dong XU, Yin-Yin LI, Xi-Yang QIAN, Zhi-Qin WANG, Jian-Chang YANG

表6 籽粒中蔗糖-淀粉代谢途径关键酶活性和剑叶光合性能与籽粒灌浆的相关系数

Table 6 Correlation coefficients of key enzyme activities in sucrose-starch pathway and photosynthetic characteristics of flag leaf with grain weight and grain filling rate

项目 Item	粒重 Grain weight	最大灌浆速率 The maximum grain-filling rate (G_max)	平均灌浆速率 The mean grain-filling rate (G_mean)
蔗糖合酶活性 SuSase activity	0.56^**	0.55^**	0.59^**
腺苷二磷酸葡萄糖焦磷酸化酶活性 AGPase activity	0.59^**	0.62^**	0.65^**
淀粉合酶活性 StSase activity	0.55^**	0.58^**	0.57^**
淀粉分支酶活性 SBE activity	0.35	0.40	0.43
剑叶光合速率 Photosynthetic rate of flag leaf	0.82^**	0.91^**	0.89^**
剑叶超氧化物歧化酶活性 SOD activity of flag leaf	0.87^**	0.94^**	0.93^**
剑叶丙二醛含量 MDA content of flag leaf	-0.82^**	-0.88^**	-0.90^**