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1. (WO2018059120) TWO-LINE RESTORER LINE FOR POLYPLOID RICE AND BREEDING METHOD THEREFOR

Pub. No.:    WO/2018/059120    International Application No.:    PCT/CN2017/095933
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Sat Aug 05 01:59:59 CEST 2017
IPC: A01H 1/02
A01H 4/00
A01H 1/08
A01H 1/04
Applicants: WUHAN POLYPLOID BIOTECHNOLOGY CO., LTD
武汉多倍体生物科技有限公司
HUBEI UNIVERSITY
湖北大学
Inventors: CAI, Detian
蔡得田
SONG, Zhaojian
宋兆建
ZHANG, Xianhua
张献华
LIU, Yuhua
刘育华
WANG, Wei
王维
HE, Yuchi
何玉池
Title: TWO-LINE RESTORER LINE FOR POLYPLOID RICE AND BREEDING METHOD THEREFOR
Abstract:
A two-line restorer line for polyploid rice and breeding method therefor. The method comprises: a. determining a hybrid parent of a breeding restorer line; b. breeding a restorer line of indica-japonica type, or breeding a restorer line of japonica-indica type, and performing backcrossing or composite crossing after parental hybridization; c. selecting a single strain that meets a breeding objective, performing composite crossing again, and performing a first molecular marker test; d. comparing and selecting a single strain having good traits, and performing continuous self-crossing until the strain is basically stable; e. selecting a stable strain having good traits and having a tested molecular marker; f. performing test crossing with different types of polyploid sterile lines using a preferred strain as the male parent; and g. choosing a good hybrid combination and a restorer line thereof. Good strains of restorer lines for polyploid rice are bred using a combination of a restoring ability of a photo-thermo-sensitive male sterile gene and a high fecundity of a polyploid rice of a PMeS genic strain.