Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (7): 1565-1569.DOI: 10.16178/j.issn.0528-9017.20240292

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Analysis of major agronomic traits in late japonica rice varieties released in Zhejiang Province over the years

ZHU Pengfei1,2(), WU Mingming2, ZHAI Rongrong2, YE Jing2, ZHU Guofu2, YU Faming2, ZHANG Xiaoming2, LI Mengyang1, YE Shenghai2,*(), WANG Jian1,*()   

  1. 1. College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao 066000,Hebei
    2. Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang
  • Received:2024-04-09 Online:2025-07-11 Published:2025-07-28

Abstract:

This study evaluated 13 late japonica rice varieties approved in Zhejiang Province over the years, focusing on yield, key agronomic traits, and bacterial leaf blight (BLB) resistance during the tillering and maturity stages. The results showed that Zhejing 22 achieved the highest yield of 9 434.7 kg·hm-2, followed by Zhejing 99 with 8 502.4 kg·hm-2. Regarding BLB resistance, Zhejing 88, Zhehujing 25, Zhejing 78, Zhehujing 26, Xiushui 134, Jiahua 1, Zhejing 99, and Zhejing 100 exhibited better disease resistance. A comprehensive evaluation of BLB resistance and yield performance identified four superior varieties including Zhejing 99, Zhejing 100, Zhejing 78, and Zhehujing 26 as promising parental lines for future breeding improvements.

Key words: rice, agronomic traits, bacterial leaf blight, yield, late japonica rice

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