Resistance Evaluation of Dominant Varieties against Rice Blast (Magnaporthe oryzae) and Bacterial Blight (Xanthomonas oryzae pv. oryzae) in Guangzhou, China

Chen Shen; Feng Aiqing; Li Chuanying; Yang Jianyuan; Yang Qiyun; Zeng Liexian; Zhu Xiaoyuan

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Resistance Evaluation of Dominant Varieties against Rice Blast (Magnaporthe oryzae) and Bacterial Blight (Xanthomonas oryzae pv. oryzae) in Guangzhou, China

Resistance Evaluation of Dominant Varieties against Rice Blast (Magnaporthe oryzae) and Bacterial Blight (Xanthomonas oryzae pv. oryzae) in Guangzhou, China

作者：

Chen Shen Feng Aiqing Li Chuanying Yang Jianyuan Yang Qiyun Zeng Liexian Zhu Xiaoyuan

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Rice

varieties

Rice

blast

Rice

bacterial

blight

Resistance

摘要：

The resistance of dominant rice varieties in Guangzhou against rice blast(Magnaporthe oryzae)and bacterial blight(Xanthomonas oryzae pv.oryzae)were evaluated by artificial inoculation and field natural blast nursery identification.Among 11 varieties tested,seven varieties showed resistance to rice blast,accounting for 63.6%;two varieties were highly resistant,accounting for 18.2%;three varieties were resistant,accounting for 27.3%;two varieties were moderately resistant,accounting for 18.2%;four varieties were susceptible(moderately susceptible),accounting for 36.4%.Varieties showed different resistance against the prevailing pathotype IV of bacterial blight;one variety was resistant,accounting for 9.1%;three varieties were moderately resistant,accounting for 27.3%;five varieties were moderately susceptible,accounting for 45.5%;one variety was susceptible,accounting for 9.1%;one variety was highly susceptible,accounting for 9.1%;all varieties tested showed susceptible to the virulent pathotype V.Huanghuazhan,Yuejingsimiao 2 and Fengxiuzhan showed resistance against both bacterial blight(pathotype IV)and rice blast,accounting for 27.3%.It is helpful to reduce the production risk by extending such dominant rice varieties with good resistance to rice blast and bacterial blight.

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篇名	Resistance Evaluation of Dominant Varieties against Rice Blast (Magnaporthe oryzae) and Bacterial Blight (Xanthomonas oryzae pv. oryzae) in Guangzhou, China
来源期刊	Plant Diseases and Pests(植物病虫害研究:英文版)	学科	农学
关键词	Rice varieties Rice blast Rice bacterial blight Resistance
年，卷（期）	2020,（3）	所属期刊栏目
研究方向		页码范围	1-2
页数	5页	分类号	S51
字数		语种
DOI