摘要
选用黄淮地区种植的7个粳稻品种,对其主要产量性状进行了相关和通径分析,建立了回归方程,研究结果表明:对黄淮地区粳稻品种产量影响最大的是单位面积(667m2)穗数,其次是穗粒数,一级枝梗数通过穗粒数而影响产量;株高、穗长与产量呈一定的负相关,反映出目前黄淮地区种植的粳稻品种主体上仍属(半)矮杆、小穗型品种,未来超高产或超级粳稻品种培育应注重协调性状间的相互关系,保证单位面积(667m2)穗数的前提下,朝高杆抗倒、大穗多粒方向发展。
Chooses the seven Japonica rice variety in huanghuai region, We analysis the correlation and the path index, establishing the regression equaion, the result show： The first factor of affecting spikes per 667m^2, the second is number of grain per spike, the stair branch affect yield through the number of grain per spike; the plant tall and the length of spike are minus correlation to yield, that show the chife vareities in huanghuai region are the short stem, small ear, the super variety will be tall stem ,resist fall, big ear and more graines, when spikes per 667m^2 is ensured.
出处
《中国农学通报》
CSCD
2005年第8期153-154,174,共3页
Chinese Agricultural Science Bulletin
基金
河南省教育科技公关研究资助项目"落粒型超级粳稻新品种选育"(200410467014)
