论文部分内容阅读
采用寒地早粳近5年参加黑龙江省区域试验和生产试验的131个品种,对稻瘟病抗性与品质诸性状的相关关系进行了研究,结果表明,寒地早粳水稻品种穗颈瘟抗性与水稻品种长宽比的相关系数为-0.1967,达到显著负相关;叶瘟、穗颈瘟抗性与水稻品种垩白大小呈显著正相关,平均相关系数分别为0.2026和0.1995;叶瘟、穗颈瘟抗性与垩白米率呈极显著正相关,平均相关系数分别为0.2276和0.2240:叶瘟、穗颈瘟抗性与垩白度除人工鉴定穗颈瘟外均呈显著正相关,叶瘟平均相关系数为0.1789,穗颈瘟平均相关系数为0.1630。叶瘟抗性与水稻品种蛋白质含量的相关系数平均为0.2159,达到显著负相关;稻瘟病抗性与水稻品种蒸煮品质、食味品质相关性因试验方法而不同,胶稠度、直链淀粉含量、食味在人工鉴定条件下存在着显著负相关性。因此,在寒地稻区选育优质、高抗稻瘟病的水稻新品种是完全可能的。
The relationship between rice blast resistance and quality traits was studied using 131 varieties which participated in the regional experiment and production test in Heilongjiang Province during the recent 5 years in the cold, early japonica rice. The results showed that panicle blast antigen The correlation coefficient between the sex and the aspect ratio of rice varieties was -0.1967, and there was a significant negative correlation. The blast resistance and panicle blast resistance were significantly and positively correlated with the chalkiness of rice varieties with the average correlation coefficients of 0.2026 and 0.1995, respectively. There was a significant positive correlation between panicle blast resistance and chalkiness rice rate, with the average correlation coefficients of 0.2276 and 0.2240 respectively: leaf blast, panicle blast resistance and chalkiness were significantly and positively correlated with those of panicle blast The average correlation coefficient of blast was 0.1789 and the average correlation coefficient of panicle blast was 0.1630. The correlation coefficient between the leaf blast resistance and the protein content of rice varieties was 0.2159, which was significantly negatively correlated. The correlation between rice blast resistance and rice cooking quality and eating quality was different due to different test methods. The gel consistency, amylose content, taste There were significant negative correlations under the artificial identification conditions. Therefore, it is entirely possible to breed new rice varieties with high quality and high blast resistance in cold paddy areas.