 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Relationships between Local Lesion, Local Colonization and Systemic Symptoms of Sorghum Downy Mildew on Sorghum after Inoculation with Conidia ) ผู้เขียน: นายณรงค์ สิงห์บุระอุดม, รองศาสตราจารย์ ,  R.J. Willams สื่อสิ่งพิมพ์:pdf AbstractIn the particular experiment the percent systemic infection from injection was higher than that from natural infection. The variety Q.L.3 was free downy mildew both artificial inoculation and field inoculation. There were relationships between local lesion, local colonization and systemic symptoms after artificial inoculation with conidia by the injection method and the rank value indicated the high relationship to exist between local colonization and infection incidence. |