Abstract: The classification and inheritance of rice starch RVA profiles were studied by testing RVA profiles of clonally propagated F₂ population and some varieties. The results were listed as follows: (1) All the RVA profiles of accessions could be divided into six types: A, B, C, D, E, F. Feature profiles of waxy variety was Type A. Indica variety′s profiles could be presented as B, C, D, E and F types and japonica variety′s feature profiles included D, E and F types. (2) RVA profiles of rice varied with apparent amylose content(AAC), but the difference for RVA also could be detected in the varieties with similar AAC. As to the varieties with low or middle AAC, their RVA profiles characteristics could be used as indexes to evaluate their eating quality. (3)RVA profiles of four hybrid combinations had the same aspects, except peak viscosity and pasting temperature of F₁ , the components index of RVA profiles characteristics of F₁ were between those of its parents. So the improvement of the quality of hybrid rice need the improvement of the CMS line and the restorer line together. (4)In clonally propagated F₂ population, all the characteristics of the RVA profiles exhibited continuous segregation. Peak viscosity was a typical quantitative character, while hot paste viscosity, cool paste viscosity, breakdown, setback and consistence, each might be controlled by a major gene and several minor genes.

Key words: rice, starch viscosity, apparent amylose content, eating quality, clonally propagated population

摘要： 通过对水稻F[sub]2[/sub]无性系群体及大量品种（系）的RVA谱的测定，研究了稻米淀粉RVA谱的类型及遗传。结果表明：（1）RVA谱可分为A~F六种类型，糯稻的特征图谱为A型，籼稻的特征图谱有B、C、D、E、F五种类型，粳稻有D、E、F三种类型。（2）稻米的表观直链淀粉含量（AAC）不同，RVA谱则不同。稻米的AAC相同，RVA谱也可不同，在低、中AAC类型中，RVA谱的差异能反映品种食味品质的差异。（3）4个杂交稻组合的RVA谱表现出相同的特点，除最高粘度和起浆温度外，其他特征值均介于双亲之间，表明杂交稻米品质改良要求不育系与恢复系的改良同步进行。（4）在F[sub]2[/sub]无性系群体中，RVA谱各特征均呈连续分布，最高粘度是典型的数量性状遗传，热浆粘度、冷胶粘度、崩解值、消减值、回复值都可能是由一对主效基因和若干微效基因共同控制的遗传。

关键词: 水稻, 淀粉粘滞性, 表观直链淀粉含量, 食味品质, 无性繁殖系