贵州小麦条锈菌的越夏调查及生理小种组成分析word格式论文.docx

优秀毕业论文 精品参考文献资料 Abstract Wheat stripe is an leaf diseases caused by Puccinias triiformis West， and Air-borne infection, Guizhou Province in China, and in the main diseases of wheat production. Through successive two years of wheat stripe rust in Guizhou Province, Vietnam Summer species composition surveys and physiological studies to investigate the over-summering and analysis of their physical composition and frequency of small species, found in wheat stripe rust in Guizhou some of the over-summering place and physiological advantages of two popular species, specific formulation is as follows : November 2006~May 2007Guizhou wheat stripe rust physiological races from five components: CY32, CY31, CY30, CY29, SU-14. CY31 in which the frequency was 37.5%, in CY32, the frequency was 27.8%, SU-14, the frequency was 15.3%, in CY30, the frequency of 9.7%. This year, the CY31 is the physiological races of wheat stripe rust in Guizhou Province of biological diversity, dominant species is the cause this years Guizhou Province, the prevalence of wheat stripe rust physiological races.November 2007~May 2008 Guizhou wheat stripe rust physiological races from four components: CY32, CY31, CY29, SU-14. CY32, in which the frequency was 55.1%, in CY31, the frequency of 32.1%, SU-14 is 8.97% frequency of occurrence, in CY29, the frequency of 3.85%. This year, the CY32 to become the territory of wheat stripe rust in Guizhou Province of biological diversity, dominant species is the cause this years Guizhou Province, the prevalence of wheat stripe rust physiological races. Guizhou Province has a relatively abundant in wheat stripe rust biodiversity. Guizhou around the physiological races of wheat stripe rust frequency of occurrence in SU-14, CY29 and CY30 of the biggest changes in the growth and decline. November 2006 ~ May 2007 Physiological kinds of Guizhou province, including CY32, CY31, CY30, CY29 and SU-14. CY30 the frequency of 9.70%; in November 2007 ~ May 2008 in Guizhou Provin