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Media type:
E-Article
Title:
Resistance of Impatiens Germplasm to Western Flower Thrips Feeding Damage
Contributor:
Herrin, Bejie;
Warnock, Daniel
Published:
American Society for Horticultural Science, 2002
Published in:
HortScience, 37 (2002) 5, Seite 802-804
Language:
Not determined
DOI:
10.21273/hortsci.37.5.802
ISSN:
0018-5345;
2327-9834
Origination:
Footnote:
Description:
<jats:p>Western flower thrips (WFT) [<jats:italic>Frankliniella occidentalis</jats:italic> (Pergande)] are an ever-present problem in greenhouse floricultural crops. To determine if host plant resistance varied in impatiens [<jats:italic>Impatiens wallerana</jats:italic> Hook. f.] nine genotypes were evaluated for resistance to WFT feeding damage. Individual insect-free plants of each genotype were inoculated with ≈30 laboratory-reared WFT. Thrips were allowed to feed on individual plants for a 4-week period during which visual evaluations were conducted every 2 weeks to estimate feeding damage. Feeding damage varied among genotypes and increased with time. At 4 weeks after inoculation, `Cajun Carmine' and `Super Elfin Lavender' had significantly less feeding damage than all other genotypes. The San Vito Wild-type germplasm was determined to be highly susceptible to thrips feeding damage based on visual evaluations. Because WFT feeding damage varied among genotypes, the potential for improving impatiens resistance to WFT exists within commercially available germplasm.</jats:p>