关键词: 水稻, 品种, 产量, 品质, 抗性, 2017年

Abstract:

 767 rice varieties, including 49 conventional indica rice, 224 two lines indica hybrid rice, 268 three lines indica hybrid rice, 169 conventional japonica rice, 39 japonica hybrid rice, 18 sterile lines, were registered by Crop Variety Approval Committee in China in 2017, the number is significantly higher than it was in 2012-2016（the average is 452）. From the main body of variety breeding, 75.10% varieties were bred by enterprises in 2017, China's rice commercial breeding system has achieved remarkable results. Average yield of conventional indica rice, two lines indica hybrid rice, three lines indica hybrid rice, conventional japonica rice and japonica hybrid rice were 468.38, 616.05, 576.18, 647.77 and 678.69 kg/667 m2 respectively, the yield of all varieties except conventional indica rice was higher than that of the previous five years. In 2017, the quality compliance rate of rice varieties was 54.34%, the quality was improved to a certain extent compared with the previous five years. There are few varieties with outstanding comprehensive resistance, but some excellent resistant germplasm resources exist in all provinces.

Key words: rice, varieties, yield, grain quality, resistance, 2017