Effects of maturity group of cultivar, pathogen amount and sowing date on the severity of rice false smut in the field

CORC > 中国农业科学院 > 作物科学研究所

	Effects of maturity group of cultivar, pathogen amount and sowing date on the severity of rice false smut in the field
	Zhou Yongli 1; Xu Jianlong 1; Xie Xuewen 1; Gao Xiaoqing 1; Wang Jie 2; Li Zhikang 1
刊名	植物保护学报
	2010
卷号	37 期号:2 页码:97-103
关键词	rice Ustilaginoidea virens cultivar maturity group disease severity
ISSN号	0577-7518
其他题名	水稻品种生育期、田块和播种期对稻曲病发生严重度的影响
英文摘要	In this study, early- and late-maturity rice cultivars were grown in the fields to investigate the effect of maturity group of cultivar, pathogen amount and sowing date on the severity of rice false smut. From our results, we identified three important correlations. First, the severity of rice false smut was dependent on the amount of chlamydospores present in the experimental field plot. Second, there was significant correlation between the disease severity and cultivar maturity, and late-maturity cultivars were significantly more susceptible than early-maturity cultivars. The percentage of diseased hills (DH), diseased panicles (DP) and diseased spikelets (DS) of late-maturity cultivars was 76.3%, 26.6% and 4.6% in 2005, and 75.7%, 29.8% and 4.7% in 2006, respectively, whereas, DH, DP and DS of early-maturity cultivars was 5.4%, 0.8% and 0.02% in 2005, and 16.8%, 3.3% and 0.08% in 2006, respectively. Third, there was no correlation between the disease severity of late-maturity cultivars and sowing dates. It was suggested to decrease the severity of false smut by planting the early maturating group cultivars or using crop rotation to reduce inoculum in rice growing regions in northern China, where false smut of rice severely outbreaks
学科主题	植物保护
语种	英语
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/106156]
专题	作物科学研究所
作者单位	1.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Beijing, 100081 2.Institute of Crop Sciences,Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Beijing, 100081
推荐引用方式 GB/T 7714	Zhou Yongli,Xu Jianlong,Xie Xuewen,et al. Effects of maturity group of cultivar, pathogen amount and sowing date on the severity of rice false smut in the field[J]. 植物保护学报,2010,37(2):97-103.
APA	Zhou Yongli,Xu Jianlong,Xie Xuewen,Gao Xiaoqing,Wang Jie,&Li Zhikang.(2010).Effects of maturity group of cultivar, pathogen amount and sowing date on the severity of rice false smut in the field.植物保护学报,37(2),97-103.
MLA	Zhou Yongli,et al."Effects of maturity group of cultivar, pathogen amount and sowing date on the severity of rice false smut in the field".植物保护学报 37.2(2010):97-103.