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Effects of Aphis fabae and Uromyces viciae‐favae on the growth of a susceptible and an aphid resistant cultivar of Vicia faba
Author(s) -
PRÜTER C.,
ZEBITZ C. P. W.
Publication year - 1991
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1991.tb04860.x
Subject(s) - biology , aphis , aphid , vicia faba , rust (programming language) , cultivar , infestation , agronomy , population , horticulture , demography , sociology , computer science , programming language
Summary Damaging effects of either black bean aphid ( Aphis fabae ), broad bean rust ( Uromyces viciae‐fabae ), or the combination of both were investigated on a susceptible (cv. Diana) and an aphid resistant (cv. Bolero) cultivar of Vicia faba. When compared with rust, aphids caused greater reductions of root dry weight, shoot dry weight, leaf area, and mean relative growth rate. The mean unit leaf rate was also reduced whereas the leaf area ratio was not affected. The damage caused per aphid was highest on the susceptible cultivar. Rust induced damage did not differ between the cultivars. Concomitant infestation with both pests only resulted in additive damage. The population development of aphids was delayed on partially resistant plants. High temperature and rust infection reduced the total number of aphids the plants were able to support but not the level of resistance. Thus the specific damaging effect per aphid was increased.