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- Title
RESISTANCE IN DIFFERENT OKRA CULTIVARS (ABELMOSCHUS ESCULENTUS L.) AGAINST AMERICAN BOLLWORM (HELICOVERPA ARMIGERA HUB.).
- Authors
Javed, H.; Aziz, M. A.; Leghari, R. A. K.
- Abstract
Response of four okra varieties viz. Pusa Sawani, Rama Krishna, Akra Anamica and Local variety was studied against Helicoverpa armigera (Hub.) at PMAS Arid Agriculture University, Rawalpindi, Pakistan during 2005. The varieties exhibited varied responses to attack of Helicoverpa armigera. There were significant differences (P≤ 0.05) among percent damaged buds, flowers and fruits of test varieties. Rama Krishna proved comparatively to be more resistant showing less percent damage in buds (2.84), flowers (3.56) and fruits (19.33) coupled with lower trichome density on leaf lamina. Local variety was comparatively found as susceptible showing more percent damaged buds (3.89), flowers (5.00) and fruits (22.97) as well as higher trichome density on leaves. These studies showed that none of varieties under test was resistant to infestation of H. armigera (Hub.). Fruits were attacked more as compared to other parts of the plants, probably due to insect preference for food. The varieties having more trichome density on leaf lamina had greater attack of the pest.
- Subjects
PAKISTAN; OKRA; CULTIVARS; HELICOVERPA armigera; AGRICULTURAL pests; PLANT diseases; MEALYBUGS; DISEASE resistance of plants; INSECTS
- Publication
Journal of Agricultural Research (03681157), 2009, Vol 47, Issue 4, p433
- ISSN
0368-1157
- Publication type
Article