Breeding of a Hybrid Brassica Napus Variety ‘Gongyou 5005’ with Cytoplasmic Male Sterility

doi:10.11923/j.issn.2095-4050.cjas2021-0202

Abstract

Abstract:

At present, heterosis utilization is an important way to breed new varieties of rapeseed with high yield and superior quality. Zigong Academy of Agricultural Sciences has continuously selected new varieties of rapeseed by improving rapeseed germplasm and using heterosis to help the development of rapeseed industry in Sichuan in recent years. ‘Gongyou 5005’ is the first hybrid Brassica napus variety with cytoplasmic male sterility accompanied by high yield and superior quality, which was selected by crossing cytoplasmic male sterility (CMS) line ‘7149A’ with double low restorer line ‘7(50) R’. Its average yield in comparative experiment of new rapeseed varieties harvested by machine in Sichuan Province (2017-2019) was 2654.1 kg/hm², increased by 10.68% compared with that of the control variety ‘Deyou 6’; the average content of erucic acid, rapeseed glucosinolates, and oil of ‘Gongyou 5005’ was 0.261%, 24.81μmol/g cake, and 43.32%, respectively, and the seeds were black. The variety was registered by the Ministry of Agriculture and Rural Affairs in 2021 with the registration number GPD rape (2021) 510021. ‘Gongyou 5005’ is a hybrid Brassica napus variety of cytoplasmic male sterility with high yield and superior quality and is suitable for planting in winter rapeseed producing area in hilly and plain regions of Sichuan, and has a high value of popularization and application.

Key words: cytoplasmic male sterility, Brassica napus, heterosis utilization, ‘Gongyou 5005’, variety breeding

WANG Wuquan, ZHENG Yongtao, YANG Huawei, HU Ling, YANG Shipeng, YU Lin, ZENG Dezhi. Breeding of a Hybrid Brassica Napus Variety ‘Gongyou 5005’ with Cytoplasmic Male Sterility[J]. Journal of Agriculture, 2023, 13(3): 40-43.

Figures/Tables 3

References 21

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