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Hereditas(Beijing) ›› 2023, Vol. 45 ›› Issue (9): 829-834.doi: 10.16288/j.yczz.23-129

• Genetic Resource • Previous Articles     Next Articles

Breeding of ZhongKeFaZaoGeng1 by molecular design

Mingjiang Chen1(), Guifu Liu1(), Yeqing Xiao2, Hong Yu1(), Jiayang Li1,3()   

  1. 1. State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
    2. Rice Research Institute of Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
    3. Yazhouwan National Laboratory, Sanya 572024, China
  • Received:2023-05-08 Revised:2023-08-04 Online:2023-09-20 Published:2023-08-15
  • Contact: Hong Yu,Jiayang Li E-mail:mjchen@genetics.ac.cn;gfliu@genetics.ac.cn;hyu@genetics.ac.cn;jyli@genetics.ac.cn
  • Supported by:
    Strategic Priority Research Program of the Chinese Academy of Sciences “Precision Seed Design and Breeding”(XDA24030101);Strategic Priority Research Program of the Chinese Academy of Sciences “Precision Seed Design and Breeding”(XDA240305048);National Natural Science Foundation of China and the STI 2030-Major Projects](31900168)

Abstract:

Double-cropping early-season rice is one important part of staple crop rice. In recent years, great progress has been made in breeding the double-cropping early-season japonica rice variety, ZhongKeFaZaoGeng1 (ZKFZG1), with high yield, good quality, and high resistance. The breeding of ZKFZG1 aimed at the severe problems of low quality, low income and pre-harvest sprouting in double-cropping early-season rice production, and was achieved through molecular design by selecting three parents with different beneficial genes, KongYu131, NanFangChangLiGeng, and JiGeng88 and screening for key agronomic genes in cross-breeding. ZKFZG1 has a compact plant architecture, a plant height of ~90 cm, a number of ~120 grains per panicle, a setting rate of ~85%, a 1000-grain weight of 26 grams, a yield of 8.25 t/ha, and especially good grain quality. The successful breeding of ZKFZG1 provides a new direction for double-cropping early-season rice production.

Key words: rice, double-cropping early-season rice, double-cropping early-season indica rice, double-cropping early-season japonica rice, breeding by molecular design