Screening and Identification of New Varieties of High-quality Hybrid Late Rice in Yongchun County

In order to screen and identify the new hybrid late rice varieties with high yield, high quality and strong resistance which were suitable for being planted in Yongchun County, Yongchun County introduced 9 high-quality late rice varieties, including Yexiangyou 676, Gengxiangyou 703, Yexiangyouyazhen and Shanliangyouyusi, etc., from the units such as Guangxi Lvhai Seed Industry Co., Ltd. in 2022 for the screening test. By taking Quanyou 822 as the control group, the growth period, yield and its component factors, and resistance of each variety were compared and analyzed. The results showed that: the yield of Shanliangyouyusi was the highest, and the yield was 7 284.75 kg·hm^-2, which was 86.1 kg higher than that of the control Quanyou 822, with an increase of 1.19%. Moreover, it showed outstanding comprehensive characters, which could be expanded for the demonstration and planting. The yield of Yexiangyou 676 and Gengxiangyou 703 ranked the second and the third, with an increase of 1.04% and 0.44%, respectively. The comprehensive characters were good, so they could be further demonstrated and popularized.