Analysis on the Main Traits and Trend of the New Rice Varieties (Combinations)Approved for Release by CCACHP during 2010 to 2015
By statistical analysis about the yield,quality and disease resistance the rice varieties,approved for release by the Crop Cultivar Appraisal Commission of Hunan province in Hunan province regional tests during 2010 -2015,The 197 rice varieties examined and approved in Hunan Province in the past 6 years,among them,up to 184 hybrid rice varieties, accounting for 93.4%,while the inbred rice only 13,accounting for 6.6%,8 high quality rice varieties (combinations), accounting for 4.1%.The range of seeds yield was 2.90% ~17.1% higher than that of controls.There is steady increase in the yield during the 6 years,but it showing a gentle trend when compared with the control.The whole level of compre-hensive resistance index is low.Quality breeding and disease resistance breeding need to be further strengthened.Seed en-terprise become the main research and development body in rice breeding,while the teaching and scientific research unites are still the important force for new variety breeding.
国家科技期刊平台
NSTL
万方数据
维普
