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United States Department of Agriculture

Agricultural Research Service

Research Project: GENETIC IMPROVEMENT OF FRUIT CROPS THROUGH FUNCTIONAL GENOMICS AND BREEDING Title: Pear psylla resistance in breeders' selections

item Bell, Richard

Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: March 31, 2010
Publication Date: August 2, 2010
Citation: Bell, R.L. 2010. Pear psylla resistance in breeders' selections. HortScience. 45(8):5216.

Technical Abstract: Twenty pear cultivars and breeders’ selections with interspecific pedigrees involving Pyrus ussuriensis and P. pyrifolia crossed with P. communis were assessed for resistance to pear psylla (Cacopsylla pyricola Foerster) using a nymphal feeding antixenosis assay. Four P. ussuriensis x P. communis hybrid selections (NJ B9 R1 T117, NJ A2 R21 T89, NY 10355 and NY 10359) and one P. pyrifolia x P. communis hybrid selection (NJ Rock R25 T238) were significantly less susceptible than Bartlett (P. communis). Fruit size and quality of the resistant selections varied, while inferior to pure P. communis cultivars, and should be valuable genetic resources for the breeding of new pear cultivars with resistance to pear psylla.

Last Modified: 8/28/2016
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