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2015•Guizhou nongye kexueRequires access

Breeding of a New Three-line Hybrid Rice Combination Qiyou 546

Zhang Shang-d

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Abstract

Qiyou 546,a new three-line hybrid rice combination was developed from the cross between male sterile line G98 Aand restoring line R546.R546 was bred by the way of cross and multiple-cross with good characters by Guizhou Rice Research Znstitute,in orde to breed the hybrid rice of cold resistance in Mountainous villages of Guizhou.The results showed that the average yield of Qiyou 546 was 620.06kg/667m2,8.77% higher than that of CK(Qianzaoyou 2017)in Guizhou rice early maturity group regional tests during 2012—2013,and the average yield was 594.33kg/667m2,4.97% higher than that of CK in production test at 2013.The resistance to rice blast in the comprehensive evaluation was middle susceptibility.It was registered as a commercial variety in 2014 in Guizhou province(No.Qianshendao2014012)of early maturing area.

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Qiyou 546,a new three-line hybrid rice combination was developed from the cross between male sterile line G98 Aand restoring line R546.R546 was bred by the way of cross and multiple-cross with good characters by Guizhou Rice Research Znstitute,in orde to breed the hybrid rice of cold resistance in Mountainous villages of Guizhou.The results showed that the average yield of Qiyou 546 was 620.06kg/667m2,8.77% higher than that of CK(Qianzaoyou 2017)in Guizhou rice early maturity group regional tests during 2012—2013,and the average yield was 594.33kg/667m2,4.97% higher than that of CK in production test at 2013.The resistance to rice blast in the comprehensive evaluation was middle susceptibility.It was registered as a commercial variety in 2014 in Guizhou province(No.Qianshendao2014012)of early maturing area.

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Available abstract

Qiyou 546,a new three-line hybrid rice combination was developed from the cross between male sterile line G98 Aand restoring line R546.R546 was bred by the way of cross and multiple-cross with good characters by Guizhou Rice Research Znstitute,in orde to breed the hybrid rice of cold resistance in Mountainous villages of Guizhou.The results showed that the average yield of Qiyou 546 was 620.06kg/667m2,8.77% higher than that of CK(Qianzaoyou 2017)in Guizhou rice early maturity group regional tests during 2012—2013,and the average yield was 594.33kg/667m2,4.97% higher than that of CK in production test at 2013.The resistance to rice blast in the comprehensive evaluation was middle susceptibility.It was registered as a commercial variety in 2014 in Guizhou province(No.Qianshendao2014012)of early maturing area.

Key concepts: Breed, Biology, Yield (engineering), Agronomy, Veterinary medicine, Horticulture, Biotechnology, Animal science

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