Evaluation on Yield and Quality of Fragrant Japonica Rice in Plain Rice Production Region in Central Liaoning
In order to improve the competitiveness in the high-end rice market and meet the increasing demand for high-quality fragrant rice,the yield,rice quality and 2-acetyl-l-pyrroline(2AP)content of 13 fragrant japonica rice cultivars were studied under the same management mode in plain rice production area in central Liaoning,the indexes were comprehensively evaluated.The results showed that the yields of Liaogengxiang 1 and the other eight cultivars could exceed 9000 kg/ha,and factors for high yields varied with different cultivars;amylose content,head rice rate,chalkiness and taste value were the main factors limiting the grade of high-quality rice;the 2AP content of Liaojingxiang 1,Yanjing 476,Yanjing 935,Yanjing 939 and Huaxiangjing 1 were significantly higher than that of other cultivars.Principal component analysis showed that the cumulative variance contribution rate of the first four principal components were above 80％,and the top five cultivars were Tiejingxiang 1,Longjingxiang 6,Yanjing 476,Liaojingxiang 1 and Jiyuanxiang 1.Considering yield,quality and 2AP content,Liaojingxiang 1 could be selected as a high-quality fragrance japonica rice cultivar in plain rice production region in central Liaoning.
NETL
NSTL
万方数据
