Details

Autor(en) / Beteiligte

• Shimelis, H.A.
• Swart, W.J.

Titel

Black rot development in introduced cabbage hybrids in Ethiopia

Ist Teil von

• African plant protection, 2004-02, Vol.10 (1), p.43-52

Ort / Verlag

ARC Plant Protection Research Institute

Erscheinungsjahr

2004

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Black rot of cabbage caused by Xanthomonas campestris pv. campestris remains one of the major challenges facing cabbage production in the humid tropics. The lack of resistant cultivars and environmental conditions favourable to the pathogen often aggravate losses. A study was conducted during 1998 and 1999 to characterise cabbage genotypes and select cultivars resistant to X. campestris pv. campestris . Ten commercial cultivars of white cabbage were artificially inoculated with a virulent strain of the pathogen in the greenhouse. Cultivar Tenacity was the most resistant since it took longer for symptom expression to occur, displayed fewer lesions and had reduced lesion size. Lesion development progressed more slowly than in other tolerant cultivars such as Gideon and Gloria which displayed intermediate resistance. Spray inoculation is preferable since it mimics natural infection.