摘要
Five rice varieties were planted to determine the variation of the yield and quality traits in five different regions in a cold area of China. The results showed that the number of the panicles, the number of grains per panicle and percentage of head-milled rice displayed quadratic curves against the accumulated temperature, and the sterile rate decreased with greater accumulated temperature. However, 1 000-grain weight had no correlation with the accumulated temperature and protein content, amylose content and taste also had no obvious relation with the accumulated temperature. The results from the accumulated temperature differed with rice variety, so the temperature insensitive type variety should be proposed for production.
Five rice varieties were planted to determine the variation of the yield and quality traits in five different regions in a cold area of China. The results showed that the number of the panicles, the number of grains per panicle and percentage of head-milled rice displayed quadratic curves against the accumulated temperature, and the sterile rate decreased with greater accumulated temperature. However, 1 000-grain weight had no correlation with the accumulated temperature and protein content, amylose content and taste also had no obvious relation with the accumulated temperature. The results from the accumulated temperature differed with rice variety, so the temperature insensitive type variety should be proposed for production.
基金
Supported by the Public Industry Project of Ministry of Agriculture(201303126)
Postdoctoral Fund of Heilongjiang Province(LBH-Z13189)
Innovation Project of Institute(2012ZD013)
作者简介
Wang Qiu-ju （1978-）, female, Ph. D, engaged in the research of plant cultivation. E-mail： bqjwang@126.comCorresponding author. Liu Feng, Ph. D, researcher, engaged in the research of plant and soil research. E-mail： liufengjms@163.com
