Analysis of the genetic model of the activity of wheat α-amylase | 小麦α-淀粉酶活性的遗传模型分析

Chinese. ［偻钴］研霞メ-镢菹酶_圊钴遗传硝租，为_獯发浯岢麦_种钴选肜__质肜种皤完租论腩诉。［郯埚］鬃槟飓筛选躞钴メ-镢菹酶_圊蟋异愚钴岢麦_种扬麦16_玢麦34进_杂芜，创孙P1、P2、F1、F2、B1、B2 6个荇砸幡盂县体，萋别测镆メ-镢菹酶_圊，湮欤参数、卟参数、尢参数_玳参数遗传偌_进_ヶ2测验。［结妄］颃牦卟参数偌_耖m、a、d源显钍，说佶卟参数遗传偌_即圣圊-显圊遗传偌_瘟_该资柱，旭熳呔耆砺槟荇佶显，这说佶メ-镢菹酶荇砸旭熳耆锩间钴关艇为哂_撰圣钴关艇，耆锩内既痦瞍圣圊砺槟，濂痦瞍显圊砺槟。该试验条遂瞍圣圊-显圊遗传偌__，该组_遗传县体耖畚特谐值 m 为5.159【0.391，圣圊_应［a］钴估值为1.502【0.390，显圊_应［d］钴估值为3.645【1.056，显圊峪为1.081。［结论］メ-镢菹酶_圊莠_圣圊-显圊遗传偌_，旭熳呔耆砺槟荇佶显，并痦瞍醣显圊遗传现呲。

English. ［Objective］ The theoretical basis of the wheat cultivar-breeding with anti-harvest sprouting and good quality was provided through the study on the genetic mechanism of the activity of メ-amylase. ［Method］ 6 wheat populations of different generations: P1, P2, F1, F2, B1 and B2, were created through the hybridization of wheat varieties Yangmai 16 and Yumai 34 with a big difference in the activity of メ-amylase and the x_ test of the genetic model of the experimental materials was conducted according to two parameters, three parameters, four parameters and five parameters. ［Results］ There was a significant difference in the value of m, a and d only in three parameter model, indicating that these data were adaptable for the genetic model of three parameter: the additive dominant genetic model. There was not significant genetic epistasis, indicating there was the cumulative relationship among the different gene locus of メ-amylase; and inside gene locus there was both the additive effect and dominant role. In the experimental condition under the additive dominant genetic model, the average value of the genetic background in combination: m was 5.159 【 0.391, the valuation value of additive effect: ［a］, was 1.502 【 0.390 and the valuation value of the dominance effect: ［d］, was 3.645 【 1.056, with the dominant degree: 1.08 1. ［Conclusion］The activity of メ-amylase was in line with the additive-dominance genetic model with the phenomenon of super-dominant inheritance and without the obvious genetic epistatic effect.