Articles
LIFE CYCLE OF PANONYCHUS ULMI (KOCH, 1836) ACARI : TETRANYCHIDAE) IN APPLE TREES, CULTIVAR GALA AND GOLDEN DELICIOUS
Article number
232_32
Pages
228 – 228
Language
Abstract
The european red mite Panonychus ulmi is one of the main pests of apple trees in the South of Brazil.
This pest attack varies according to apple cultivars.
A study was carried out aiming at evaluating the influence of the cultivars Gala and Golden Delicious on P. ulmi development and reproduction.
The trial was conducted under laboratory condition, using chambers set at 21°C, 83% of relative humidity and 14 hours of photophase.
Mites were individualised and kept in leaf disc on wetted filter paper.
Results showed that there was no variation in the mite evolutive cycle considering the tested cultivars.
The cultivar Golden Delicious, however, presented best conditions for mature mites development, since their oviposition period, number of eggs/female, fecundity, fertility and longevity are favoured.
This pest attack varies according to apple cultivars.
A study was carried out aiming at evaluating the influence of the cultivars Gala and Golden Delicious on P. ulmi development and reproduction.
The trial was conducted under laboratory condition, using chambers set at 21°C, 83% of relative humidity and 14 hours of photophase.
Mites were individualised and kept in leaf disc on wetted filter paper.
Results showed that there was no variation in the mite evolutive cycle considering the tested cultivars.
The cultivar Golden Delicious, however, presented best conditions for mature mites development, since their oviposition period, number of eggs/female, fecundity, fertility and longevity are favoured.
Authors
L.G. Ribeiro, A. Villacorta, L.A. Foerster
Keywords
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