Factors influencing disease resistance in high and low tannin Vicia faba
1996
Kantar, F. (Ataturk Univ., Faculty of Agriculture, Erzurum (Turkey). Div. of Agronomy) Hebblethwaiet, P.D. | Pilbeam, C.J. (Dept. of Soil Science, Whiteknights, Reading (U.K.))
The in vitro resistance of five white and four coloured-flowered lines and cultivars of Vicia faba to seed and root inoculation with spore suspensions of the pathogenic soil-borne fungi, Fusarium culmorum and Pythium debaryanum, was investigated under aseptic conditions in the UK. The presence of foliar diseases was also assessed in the field in 1989/90. White-flowered lines were more susceptible than coloured genotypes to fungal infection during germination but equally resistant during seedling growth. High-tanning containing seed coats had chemical and physical properties which protected seeds against fungal infection during germination. Frequent cracking of the seed coat in a zero-tannin line was associated with a greater fungal contamination of seeds. Resistance to the foliar diseases Uromyces viciae-fabae and Botrytis fabae was not related to flower colour. The results are discussed in relation to emergence in white-flowered types
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