Morphological and biochemical characterization of Ralstonia solanacearum (smith) in brinjal (Solanum melongena L.) in Rajasthan (India)

Brinjal (Solanum melongena L.) of family solanaceae is an important vegetable crop growing worldwide. It is grown in the warm areas of Far East, being grown extensively in India, Bangladesh, Pakistan, China, Philippines, France, Italy and United States. It is considered a native to India or major Asia where the major domestication of large fruited cultivars occurred. It has been cultivated in India for the last 4,000 years, although it is often thought of as a Mediterranean or mid-Eastern vegetable. The major brinjal producing states are West Bengal, Orissa, Bihar, Gujarat, Maharashtra, Karnataka, Uttar Pradesh and Andhra Pradesh. In Rajasthan, Alwar, Kota, Jaipur, Sriganganagar and Bharatpur are the major producing districts. The global area under brinjal cultivation has been estimated at 1.85 million h with total production of brinjal fruit of about 32 million MTs. Bacterial wilt caused by Ralstonia solanacearum 4 syn. Pseudomonas solanacearum is one of the most destructive diseases of solanaceous crops worldwide. It is predominant disease in warm humid tropical and temperate regions of the world 6,7 means receiving global profile. 8 It has been reported from Switzerland, 9 London, 10 Africa, In India the disease has been reported from the Guwahati, 14 Pantnagar. In the present study identification and characterization of pathogen its incidence in seed grown in Rajasthan state, India and transmission of seed borne inoculums from seed to plant were studied,