早籼杂交水稻稻米品质性状分析

目的]进一步了解广西近几年来早籼品种(组合)的稻米品质状况。方法]以大面积推广利用及新组配的10个早籼杂交水稻组合为材料,研究早籼三系杂交水稻稻米的品质性状。结果]参试组合的蛋白质含量和精米长度的达标率最高;精米率、整精米率和垩白性状的达标率为0;参试组合的大多数品质性状表现一般,无一组合的全部品质指标能达到部颁食用优质米2级标准。结论]该研究为选育优质、高产水稻新品种(组合)提供了理论依据,并为农业生产充分利用现有水稻品种(组合)提供了参考。

Analysis on Grain Quality Status of Early Indica Hybrid Rice

Objective] The aim was to know more about the grain quality status of early rice varieties(combinations) in Guangxi in recent years.Method] With 10 newly combined early indica hybrid rice combinations which were extended and utilized in large area,the grain quality traits of early indica three-line hybrid rice were studied.Result] The standardized rates of protein content and polished rice length of tested combinations were highest and that of polished rice rate,head rice rate and chalkiness characters were 0.Most of quality characters of tested combinations performed generally and none of the combinations could reach the criterion of second-class rice issued by the Chinese Agriculture Ministry on all the quality indices.Conclusion] The research supply theoretical basis for breeding new rice varieties(combinations) with high yield and good quality and provide references for making the most of present rice varieties(combinations) in agricultural production.