籼爪交水稻F2群体的蒸煮食味品质研究
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四川省教育厅重点项目(No. 13ZA0272);四川省生物质资源利用与改性工程技术研究中心开放基金项目(No. 12ZXSK08);西南科技大学研究生创新基金资助项目(No. 14ycx075)


Studies on Cooking and Eating Quality of F2 Population of Indica/Javanica Rice
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    摘要:本文以籼型高直链淀粉恢复系CG133R与糯性爪哇稻22号杂交的F2群体为材料,分析了该群体的蒸煮品质指标的变异及其与淀粉粘滞性特征值之间的相关性,并且对控制这些品质指标的主效基因颗粒结合淀粉合成酶基因(Wx基因)和可溶性淀粉合成酶基因(SSII-3基因)在F2群体中的遗传进行了探究。结果表明:各品质指标和RVA谱特征值在F2群体中广泛分离,且变异较多,其中变异最大的是消减值,其次为胶稠度、直链淀粉含量等。高直链淀粉材料各理化指标与RVA谱特征值的相关性不显著;RVA谱特征值在中、低直链淀粉含量和糯稻群体中与各理化指标存在显著或极显著的相关性;在中、低直链淀粉材料中,RVA谱特征值与糊化温度(GT)也存在显著或极显著相关性。用Wx基因和SSII-3基因的分子标记检测这两个基因在F2群体的分离情况,结果表明这两个分子标记存在偏分离;且偏离分别指向两个亲本类型。除高直链淀粉材料外,可以通过RVA谱特征值来辅助筛选优质水稻品种。

    Abstract:

    A rice F2 population was obtained from a hybrid cross of the indica restorer line CG133R with high amylose content and the glutinous rice variety javanica 22, which was as materials. The variation and their correlation between the cooking and eating quality indices and starch RVA characteristic values were analyzed and the genetics of the major genes (Wx and SSII-3) controlling the physicochemical indexes in the F2 population were examined. The results indicated that the physicochemical indexes and RVA profile characteristics had great variation in F2 population, setback with the maximum variation, followed by gel consistency and amylose content; correlation of physicochemical indexes of materials with high amylose content were not significant with RVA profile characteristics. RVA profile characteristics in materials with medium, low amylose content and glutinous rice groups had significant or extremely significant correlation with the physical and chemical indices. In materials with medium and low amylose content, there also had significant or extremely significant correlation with gelatinization temperature (GT). Separation of Wx and SSII-3 genes in F2 population was detected using molecular marker and showed that the two molecular markers existed partial separation and deviated to two parent types, respectively. There was more variation in the F2 population except for the materials with high amylose content. RVA profile characteristics could be used for assisted-selection for quality rice breeding.

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康翠芳,向珣朝,龙小林,等.籼爪交水稻F2群体的蒸煮食味品质研究[J].植物遗传资源学报,2015,16(3):561-568.

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  • 收稿日期:2014-08-28
  • 最后修改日期:2014-10-19
  • 录用日期:2015-03-30
  • 在线发布日期: 2015-05-06
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