吉林省晚熟粳稻品种高产性状及其利用途径的研究

STUDY ON UTILIZATION WAY AND HIGH YIELD COMPONENTS OF LATE MATURING VARIETIES OF ROUND GRAINED NONGLUTINOUS RICE IN JILIN PROVINCE

摘要:

本文对27份晚熟粳稻品种的12个与产量有关的性状进行了分析和研究, 其结果表明: (1)单苗分蘖数, 每穴有效穗数, 每穗粒数, 饱满千粒重, 混合千粒重, 植株高度为高产性状, 以上性状表现型值高的品种产量亦高。(2)单苗分蘖数, 每穴有效穗数多的穗数型品种, 遗传相关及遗传贡献大, 可以做为晚熟粳稻高产育种的亲本材料, 后代材料可以在低世代结合单穴粒重进行选择。(3)分蘖力强, 成穗率高, 每穗粒数多, 千粒重高的晚熟品种, 可以做为高产品种在生产上直接利用, 本文还报道了高产品种资源的利用情况及高产管理与栽培技术。

Abstract:

The 12 yield components of 27 late maturing varieties of round grained nonglutinous rice were studied and analysed in this article.The results showed that: (1) the tillers per plant, ears per hole, grains per ear, 1000-full-grains weight, 1000-mixing-grains weight and hight of plant are high yield components. And the higher phenotype values of these yield components take, the higher yield is; (2) the varieties are with higher yield components of tillers per plant, ears per hole,granules per ear,the heredity correlation and heredity contribution are more than others. These varieties can be used for the parents in the high yield breeding of late maturing varieties of round grained nonglutinous rice. The selection can be put into effect in early generation according to grains weight per plant; (3)the late maturing varieties with more tillers, ears, grains per ear and high 1000-grains weight can be directly used as high yield varieties in production of rice. The article also reports the high yield cultivation and management technic.