A New Blast-resistant Long-grain Hybrid Restorer Rice Line, Fuhui 7076

CHEN Liping; XIE Hongguang; WU Fangxi; LUO Xi; ZHU Yongsheng; ZHENG Yanmei; LIN Qiang; CAI Qiuhua; XIE Huaan; ZHANG Jianfu

doi:10.19303/j.issn.1008-0384.2020.06.002

Volume 35 Issue 6

Jun. 2020

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Article Navigation > Fujian Journal of Agricultural Sciences > 2020 > 35(6): 576-581

CHEN L P, XIE H G, WU F X, et al. A New Blast-resistant Long-grain Hybrid Restorer Rice Line, Fuhui 7076 [J]. Fujian Journal of Agricultural Sciences，2020，35（6）：576−581 doi: 10.19303/j.issn.1008-0384.2020.06.002

Citation:

CHEN L P, XIE H G, WU F X, et al. A New Blast-resistant Long-grain Hybrid Restorer Rice Line, Fuhui 7076 [J]. Fujian Journal of Agricultural Sciences，2020，35（6）：576−581 doi: 10.19303/j.issn.1008-0384.2020.06.002

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A New Blast-resistant Long-grain Hybrid Restorer Rice Line, Fuhui 7076

doi: 10.19303/j.issn.1008-0384.2020.06.002

CHEN Liping^{1, 2, 3
,},
XIE Hongguang^{1, 2, 3},
WU Fangxi^{1, 2, 3},
LUO Xi^{1, 2, 3},
ZHU Yongsheng^{1, 2, 3},
ZHENG Yanmei^{1, 2, 3},
LIN Qiang^{1, 2, 3},
CAI Qiuhua^{1, 2, 3},
XIE Huaan^{1, 2, 3
,
,},
ZHANG Jianfu^{1, 2, 3
,
,}

1.
Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian　350003, China
2.
Key Laboratory of Germplasm Innovation and Molecular Breeding of Hybrid Rice for South China, Ministry of Agriculture and Rural Affairs/Fuzhou Branch, National Rice Improvement Center of China/Fujian Engineering Laboratory of Crop Molecular Breeding/Fujian Key Laboratory of Rice Molecular Breeding, Fujian Academy of Agricultural Sciences/Incubator of National key Laboratory of Fujian Germplasm Innovation and Molecular Breeding between Fujian and Ministry of Sciences & Technology, China/South China Bases of National Key Laboratory of Hybrid Rice for China, Fuzhou, Fujian　350003, China
3.
National Rice Engineering Laboratory of China, Fuzhou, Fujian　350003, China

Received Date: 2019-11-24
Rev Recd Date: 2020-05-05
Publish Date: 2020-08-10

Abstract

Abstract

Objectives A new blast-resistant lines of rice suitable for cultivation in Fujian province was generated with an efficient breeding method. Methods Applying the EMS chemical mutagenesis, Hang 2 with excellent agronomic traits except blast-resistance was selected to breed a hybrid restorer line through directional cultivations in areas with varied ecological conditions. Disease-resistance of the lines was verified to finalize the process and hybrid selection. Results The hybrid Indica restorer line, Fuhui 7076, not only inherited the desirable agronomic traits of Hang 2, such as wide compatibility, strong resilience, and high combining ability, but also performed superior on the quality and yield as well as an MR (medium resistance) rating on blast. Utilizing Fuhui 7076 to cross with Ganxiang A, Ganyou 7076 gave a 2-year average yield of 10,711.5 kg/hectare at the 2015 and 2016 Yunnan Provincial Indica Hybrid Rice Trials. The yield was 3.24%, and the rate of increase 68.42%, higher than control, F You 498. In 2017 , Ganyou 7076 was certified by the Crop Certification Committee of Yunnan Province (Certificate No. 2017009). Conclusions With the EMS chemical mutagenesis, the agronomically desirable Hang 2 was bred to be blast-resistant. Through years of continued directional selection in blast-prone rice farming regions of varied ecosystems, the time required for natural mutation process was significantly shortened in the breeding of the disease-resistant variety.
- Hybrid rice,
- restorer line,
- Fuhui 7076,
- rice blast resistance,
- breeding

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References(16)

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