【摘要】 本文研究了中国水稻品种直链淀粉的积累特性及其与W_x蛋白的关系。结果表明:非糯品种直链淀粉的含量随籽粒的发育而增加;糯性品种花后7～14天直链淀粉含量上升,以后渐渐降低。糯性品种缺乏W_x蛋白;非糯品种的W_x蛋白水平与直链淀粉含量呈很好的线性关系,W_x蛋白的出现和变化情况则因直链淀粉含量的不同而异,其变化主要是受W_x基因顺序表达的影响。更多还原

【Abstract】 The relations between the amylose accumulation characteristic of rice varieties and the Wx protein was studied by means of SDS polyacryl- amide gel electrophoresis. The results show that: during grain development, days after flowering （DAF）, The amylose content increases in nonwaxy rice but it decreases in waxy rice after 14 DAF. Waxy rice is lack of W_x protein, but the W_x protein level and the amylose content in nonwaxy rice (r=0.999^**) present a good linear relaltion. The appearance and variance of W_x protein in nonwaxy grains vary with rice varieties, which are effected by the order expression of W_x gene.更多还原