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MARC Record
Bibliographic Data
Control Number
57878
Date and Time of Latest Transaction
20060619142723.2
General Information
060619s |||||||||b ||00|||
Cataloging Source
PCARRD-DOST
Main Entry - Personal Name
Bernardo, Emiliana N.
Main Entry - Uniform Title
ENGLISH
Title Statement
Resistance of eggplant, okra, tomato and pepper against leafhopper thrips, fruit worm and other arthropod pests
General Note
College, Laguna: UPLB, IPB, 1991. 124p. -(RRDP-PCARRD Proj. No. 89-398-21; Study 3)
Summary, Etc.
This study was conducted to identify and utilize resistant germplasm of white potato, beans, eggplant, tomato, okra and pepper against major insect pests; to determine the mechanisms of plant resistance to the pests in the genotypes identified; and to develop resistant populations with acceptable horticultural features for use by plant breeders as parent materials in crop improvement programs, or for release as commercial varieties. Clones 86-62, 8300-C-76-9 and 8302-D-181-15 were the best selections in white potato (1986) which exhibited some resistance to the combined infestations of thrips and mite. Snap beans, bush sitao and field beans were not resistant against beanfly, while pole sitao had moderate resistance. In 1989, eggplant genotypes (PI-381272-2, PI-381272-10 and PI386257-11) consistently showed a resistant reaction during several general evaluation and verification trials, but they possessed poor horticultural qualities. A number of derived lines from the commercial variety Dumaguete Long Purple (DLP) which showed slightly higher level of resistance to leafhopper were selected. Antixenosis and antibiosis were present in the resistant PI-381272-2 and PI-386257-11. Acc 85, 96a and 268 were the most promising in terms of resistance to shoot/fruit borer, but the resistance level was not adequate for use in crop improvement. While Acc 85, 137 and 260 showed combined resistance to leafhopper and shoot/fruit borer infestations. In the 1988 okra evaluation, Acc 9, 12, 14, 39 and 363 were selected as moderately resistant entries. In 1989, Acc 9, 35, 46, 72, 343, 345, 357, 361 and 363 showed some tolerance. However, these resistant selections had poor horticultural characteristics. Acc 24, 48 and 107 were the most promising, possessed more acceptable horticultural features, and had slightly higher level of resistance than Smooth Green (commercial variety). In both 1989 and 1990 tomato trials, very low populations of thrips and fruitworm were observed due to the high populations of natural enemies predatory-phytophagus (Cyrtopeltis tenuis). The wild tomato Accs. 76W and 77W were the least preferred for oviposition and larval feeding. In pepper, Acc 103, 158 and advanced line 277-18-8-12-N were the most resistant to aphid infestation among the genotypes evaluated
Subject Added Entry - Topical Term
HIBISCUS ESCULENTUS
TOMATOES
SOLANUM MELONGENA
PEST RESISTANCE
Added Entry - Personal Name
Lit, Merdelyn C.
Fernandez, Eduardo C.
Rasco, Eufemio Jr. T.
Location
DOST PCARRD
Physical Location
Department of Science and Technology
Philippine Council for Agriculture, Forestry and Natural Resources Research and Development
Digital Copy
Not Available
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