论文部分内容阅读
对139个水稻品种幼苗和其中的72个品种灌浆期胚乳酯酶同工酶进行测定,在阳极迁移率为0.818和0.876位置表现3种酶带类型:慢带型E_3~S,快带型E_3~F和无酶带型E_3~0。对不同酶带型品种杂交的F_1和F_2酯酶遗传分析表明:阳极标志酶带E_3~S和E_3~F分别受Est_3位点上两个共显性等位基因控制,而无酶带型则受同一位点上一个隐性无效等位基因控制。苗期和灌浆期遗传分析结果是一致的。胚乳酯酶还表现明显的基因剂量效应。据此,作者提出胚乳酯酶的遗传模式。
The esterase isozymes in 139 rice cultivars and 72 cultivars at the grain filling stage were determined. Three enzyme bands were observed at the positions of 0.818 and 0.876, respectively: slow band E_3 ~ S, fast band E_3 ~ F and no band E_3 ~ 0. The genetic analysis of F_1 and F_2 esterases that hybridized to different bands showed that the bands of E_3 ~ S and E_3 ~ F were controlled by two codominant alleles at Est_3 sites, respectively, whereas the bands without enzyme bands Controlled by a recessive null allele at the same locus. The results of genetic analysis at seedling and grain filling stages are consistent. Endosperm esterase also showed significant gene dose effects. Accordingly, the author proposed the genetic mode of endosperm esterase.