Greenhouse Method for Testing of Resistance of Young Brassica Plants to Alternaria brassicae

1439-0523

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Small differences in attack of Alternaria brassicae on Brassica species are difficult to detect in the field. Therefore, a more detailed method was developed in the greenhouse. Small agar discs with Alternaria brassicae were placed with the infected sides against the upper side of the 2nd leaf, over a 4 mm hole. The necrotic lesions on the leaves were measured 7 days after inoculation. The test results indicate that differences in resistance do exist. It is, however, doubtful if the resistance is great enough to be used in a plant breeding programme.

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