Sources of resistance to cowpea (Vigna unguiculata L.)bacterial leaf blight disease
Cowpea Vigna unguiculata (L.) Walp is an important legume crop grown in tropical and subtropical countries. In addition to using green pods and grains for food, it is also grown as fodder crop. The production and productivity of cowpea is affected by both biotic and abiotic stresses. Bacterial blight of cowpea caused by Xanthomonas campestris pv. Vignicola is one of the important diseases of cowpea among biotic stresses which significantly reduce the yield and quality of cowpea all over the world. The identification and use of resistant sources against pests and diseases is a pre-requisite for any crop improvement programme. Although appropriate control measures for bacterial leaf blight are available under rainfed agriculture, the use of host plant resistance is the most economical and practicable method. In the present study 196 cowpea genotypes were screened for bacterial leaf blight under field conditions. Fifty genotypes showing resistant reactions under field conditions were selected for further confirmation under glasshouse condition with artificial inoculation. Ten plants of each genotype were artificially inoculated by pin prick method. Disease or symptom development which appeared after 21~30 days on each genotype was recorded at 15 days interval up to maturity and genotypes were evaluated. Among fifty genotypes tested, V-16 showed highly resistant, APC-140, HC-03-02 moderately resistant, GC-4, P-695 moderately susceptible and C-152 highly susceptible reactions.
Cowpea Bacterial leaf blight Xanthomonas campestris pv vignicola
K. P. Viswanatha M. S. Pallavi P. Hassan khan
All India Co-ordinated Research Project on Chickpea, Zonal Agriculture Research Station,University of Agriculture Sciences, Gandhi Krishi Vigyan Kendra, Bangalore, Karnataka, India
国际会议
The 2nd Asian PGPR Conference(第二届亚洲植物促生根际细菌会议)
北京
英文
461-468
2011-08-21（万方平台首次上网日期，不代表论文的发表时间）