Investigations on black rot of cauliflower (Brassica oleracea var. botrytis L.) caused by Xanthomonas campestris pv. campestris (Pammel) Dowson

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dc.contributor.advisorMali, B. L.
dc.contributor.authorBairwa, H. P.
dc.date.accessioned2017-10-04T05:29:21Z
dc.date.available2017-10-04T05:29:21Z
dc.date.issued2008
dc.descriptionInvestigations on black rot of cauliflower (Brassica oleracea var. botrytis L.) caused by Xanthomonas campestris pv. campestris (Pammel) Dowsonen_US
dc.description.abstractBacterial black rot is a major disease of cauliflower (Brassica oleracea var. botrytis L.). The disease has been observed in all cauliflower growing areas of the state including Udaipur. The disease initially appeared as small water soaked lesions on the leaf periphery, which later on increased in size. The pathogen produced V-shaped chlorotic lesions on the leaf margins upon invasion through hydathodes. Morphological, cultural and biochemical characteristics were studied. The bacterium appeared as straight, capsulated rods with single polar flagellum under the oil immersion objective of compound microscope. It was identified as Xanthomonas campestris pv. campestris. Best infection was obtained by carborundum abrasion method. The disease was favoured by temperature between 30-330c and relative humidity above 82-89 per cent. High and low temperatures and dry weather were found adverse for its development. The bacterium, X. c. pv. campestris causing black rot reduced the quantity of chlorophyll, protein and phenol in disease affected plant leaves. Under climatic conditions of Udaipur none of the varieties were found tolerant against bacterial black rot of cauliflower. However, Pusa deepali and Kartiki exhibited moderatly tolerant. Streptocycline (500 ppm) gave maximum inhibition of the bacterial growth in vitro. Out of four plant extracts, Neem and Garlic extract inhibited the growth of X. c. pv. campestris, effectively. Streptocycline (250 ppm) was found most effective in seed germination (66.67 per cent) against X. c. pv. campestris and in case of plant extract Neem leaf and Garlic bulb extract was found most effective.en_US
dc.identifier.citationBairwa and Mali, 2008en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810032185
dc.keywordsInvestigations, Black rot, Brassica oleracea, Xanthomonas campestrisen_US
dc.language.isoenen_US
dc.pages74en_US
dc.publisherMPUAT, Udaipuren_US
dc.research.problemInvestigations on black rot of cauliflower (Brassica oleracea var. botrytis L.) caused by Xanthomonas campestris pv. campestris (Pammel) Dowsonen_US
dc.subPlant Breedingen_US
dc.subjectnullen_US
dc.themeInvestigations on black rot of cauliflower (Brassica oleracea var. botrytis L.) caused by Xanthomonas campestris pv. campestris (Pammel) Dowsonen_US
dc.these.typeM.Scen_US
dc.titleInvestigations on black rot of cauliflower (Brassica oleracea var. botrytis L.) caused by Xanthomonas campestris pv. campestris (Pammel) Dowsonen_US
dc.typeThesisen_US
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