Biotechnology Bulletin ›› 2022, Vol. 38 ›› Issue (1): 44-50.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0406

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Development of Neo-tetraploid Rice and Research Progress on Its Heterosis Mechanism

LIU Xiang-dong1,2,3(), WU Jin-wen2,3, SHAHID Muhammad Qasim1,2,3   

  1. 1. State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,South China Agricultural University,Guangzhou 510642
    2. Guangdong Provincial Key Laboratory of Plant Molecular Breeding,Guangzhou 510642
    3. College of Agriculture,South China Agricultural University,Guangzhou 510642
  • Received:2021-03-30 Online:2022-01-26 Published:2022-02-22

Abstract:

Neo-tetraploid rice is a kind of new polyploid rice germplasm with high fertility,which harbors several elite genes. Heterosis in yield was found in F1 hybrids of neo-tetraploid rice crossed with autotetraploid rice,which had potential for commercial production. Here,first of all,the research progress on autotetraploid rice was described,focusing on the development procedure,main characteristics,and molecular genetic mechanism of heterosis in neo-tetraploid rice. Finally,the key issues for further research were advanced. It will provide the basis for accelerating the utilization of neo-tetraploid rice in polyploid rice breeding.

Key words: rice, polyploid rice, neo-tetraploid rice, heterosis