HUBEI AGRICULTURAL SCIENCES ›› 2026, Vol. 65 ›› Issue (6): 1-8.doi: 10.14088/j.cnki.issn0439-8114.2026.06.001

• Breeding & Cultivation •     Next Articles

Analysis of high yield and rice quality of ratooning rice varieties in the middle reaches of the Yangtze River

LI Yang, TIAN Mao-tao, ZHANG Zuo-lin, WANG Ben-fu, ZHANG Zhi-sheng, XIE Yi, CHENG Jian-ping   

  1. Institute of Food Crops, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement,Wuhan 430064, China
  • Received:2026-02-28 Online:2026-06-25 Published:2026-06-26

Abstract: A field experiment was conducted to evaluate the yield performance and rice quality of 15 two-line hybrid rice varieties and 15 three-line hybrid rice varieties in the main season and ratoon season, in order to clarify the high yield law and screen high yield and high quality varieties suitable for the middle reaches of the Yangtze River. The results showed that the yield of the two-line hybrid rice was 2.2% and 10.1% higher than that of the three-line hybrid rice in the main season and the ratoon season, respectively. The significant negative correlation between the 1 000-grain weight and the effective panicles of the ratoon season might be an important reason for its lower yield. The yield of Yongyou 4949 was the highest (9.75 t/hm2) in the main season, and that of Weiliangyou 6018 was the highest (5.17 t/hm2) in the ratoon season. The varieties with higher annual yield than the control included Weiliangyou 6018, Yaliangyou Meixiangxinzhan, Yongyou 4949, Jingxiangyou 72, E Liangyou 36, and Weiliangyou 8612. Through the cluster analysis of annual yield, the varieties with annual high yield included Weiliangyou 6018, Yaliangyou Meixiangxinzhan and Yongyou 4949. The analysis of rice quality showed that the chalkiness degree and chalkiness grain rate of the main season rice were significantly higher than those of the ratoon season rice, which was an important factor limiting its quality. The chalkiness grain rate and chalkiness degree of the two-line hybrid rice varieties were slightly higher than those of the three-line hybrid rice varieties. Cluster analysis of rice quality showed that high-quality varieties included Chufengyou Yingxiangsimiao, Zhenliangyou Quanjingsimiao, Zhenliangyou Yingxiangsimiao, Quanyou 822, Longjingyou 4013, Shenliangyou Yuehesimiao, Y Liangyou 130, etc.

Key words: ratoon rice, variety screening, grain quality, superior quality, high yield, the middle reaches of the Yangtze River

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