Author： MEYER JOHN R. BALLINGTON JAMES R.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.83, Iss.3, 1990-05, pp. : 515-520
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Abstract
Natural host plant resistance to the leafhopper Scaphytopius magdalensis (Provancher) was evaluated across 169 genotypes representing 14 blueberry species in four sections of Vaccinium native to North America. Plants were screened by caging neonate nymphs on individual leaves and recording development time (and mortality) through five molts. Highly resistant clones were found in five species: V. ashei Reade, V. crassifolium subsp. crassifolium Andrews, V. elliottii Chapman, V. staminium L., and V. arboreum Marshall. Physical characteristics of the leaves (thickness, glandular density, glaucousness, and toughness) were poorly correlated with resistance in V. ashei, but a possible correlation with leaf toughness was found in V. crassifolium. Lineage of the resistant trait is illustrated for V. ashei cultivars.
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