国标优质籼稻的稻米品质与淀粉 RVA 谱特征研究
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广东省自然科学基金(10151064001000008,S2013010012850);国家自然科学基金(31471175)


Studies on the rice quality and starch RVA profile characteristics of indica rice varieties with national high-quality
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    摘要:

    【目的】了解国标优质籼稻的米质特点.【方法】以广东省最近育成的水稻品种粤晶丝苗2号等为研究材料,对稻米碾磨品质、外观品质、蒸煮食味品质、营养品质和淀粉RVA谱进行了测定和相关分析.【结果和结论】国标优质籼稻具有整精米率较高、粒型窄长、腹心白少、透明度好、直链淀粉含量适中和长胶稠度等优点;蛋白质含量品种间差异不大,脂肪酸含量品种间的差异较大,粤秀占、巴太香1号、粤晶丝苗2号的脂肪酸含量较高;国标优质籼稻的RVA谱具有高崩解值、低消减值的特点,食味品质优于非国标优质籼稻,其中粤晶丝苗2号的崩解值和消减值符合公认的优质食味指标值,是一个食味品质优良的籼稻品种.直链淀粉、胶稠度与RVA谱的冷胶黏度、崩解值和消减值密切相关,在水稻品质育种中增加RVA谱测定,尤其是将直链淀粉、胶稠度的选择与崩解值、碱消值分析相结合,可有效地提高水稻食味品质选择的准确性.

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    【Objective】To understand the grain characteristics of indica rice varieties with national high-quality. 【Method】 Yuejingsimiao2 and other rice varieties were employed to study the grain qualities, including the milling quality, appearance quality, cooking quality, nutritional quality and starch RVA profile. 【Result and conclusion】 The indica rice varieties with national high-quality had advantages of high head rice, narrow grain shape, little white-belly, good transparency, moderate amylose content and long gel consistency. The difference of protein content was not obvious among these indica rice varieties with national high-quality, but the difference of fatty acid content was obvious. The rice varieties of Yuexiuzhan, Bataixiang1 and Yuejingsimiao2 had higher fatty acid contents. In general, the RVA profiles of indica rice varieties with national high-quality had higher breakdown and lower setback values, and their eating qualities were better than those of indica rice varieties with non-national quality. The breakdown and setback values of Yuejingsimiao2,which was an indica rice variety with good eating quality, met the recognized indicators of good eating quality. The amylose content and gel consistency were positively correlated with cool paste viscosity, breakdown and setback values. A RVA profile analysis, particularly combined the selecting of amylose content and gel consistency with the analysis of breakdown and setback values, is helpful to improve the accuracy and efficiency in rice quality breeding.

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何秀英,程永盛,刘志霞,陈钊明,刘维,卢东柏,陈粤汉,廖耀平.国标优质籼稻的稻米品质与淀粉 RVA 谱特征研究[J].华南农业大学学报,2015,36(3):37-44

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  • 收稿日期:2014-03-13
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  • 在线发布日期: 2015-04-29