caa a22 4500 469042125 CHVBK 20180323132814.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF01974487 doi (NATIONALLICENCE)springer-10.1007/BF01974487 Genetic mapping and utilization of quantitative trichome-mediated insect resistance in potato [Elektronische Daten] [M. Bonierbale, R. Plaisted, S. Tanksley] Introgression of trichome-mediated insect resistance from the wild speciesSolanum berthaultii has become a major focus of the potato improvement program at Cornell University during the past twelve years. Several quantitative characters are involved in this resistance which is effective against a wide range of pest types. Correlative biochemical assays have been developed to assay specific components of the resistance, and the effects of the resistance on the target pests have been studied. Quantitative laboratory assays and specific measurements of insect behavior and biology have increased the precision of selection and enable the investigation of the genetic control of the resistance. We are currently using restriction fragment length polymorphisms (RFLPs) for genetic mapping of factors controlling the trichome traits fromS. berthaultii. Backcrosses to both the wild and the cultivated species parents have been evaluated for phenotypes contributing to the resistance mechanism, including trichome density, sucrose ester and polyphenol oxidase production by the trichomes, and the enzymatic browning reaction responsible for insect entrapment. Genetic maps are being developed for these progenies, using RFLP markers previously mapped in potato. Field and greenhouse trials under insect infestations are also being conducted with the mapping progeny. Our goal is to locate genes responsible for quantitative insect resistance by correlating RFLP variation at mapped loci with the trichome phenotypes and insect resistance. Genetic markers for these traits will be useful in transfer of the effective wild chromosomal segments into and among tetraploid potatoes, and for a better understanding of the resistance mechanism. Koninklijke Nederlandse Planteziektenkundige Vereniging, 1992 genetic mapping nationallicence quantitative traits nationallicence insect resistance nationallicence Bonierbale M. Department of Plant Breeding and Biometry, Cornell University, 252 Emerson Hall, 14853, Ithaca, NY, U.S.A. aut Plaisted R. Department of Plant Breeding and Biometry, Cornell University, 252 Emerson Hall, 14853, Ithaca, NY, U.S.A. aut Tanksley S. Department of Plant Breeding and Biometry, Cornell University, 252 Emerson Hall, 14853, Ithaca, NY, U.S.A. aut Netherlands Journal of Plant Pathology Kluwer Academic Publishers 98(1992-03-01), 211-214 0028-2944 98<211 1992 98 10658 https://doi.org/10.1007/BF01974487 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01974487 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bonierbale M. Department of Plant Breeding and Biometry, Cornell University, 252 Emerson Hall, 14853, Ithaca, NY, U.S.A aut NATIONALLICENCE 700 1- Plaisted R. Department of Plant Breeding and Biometry, Cornell University, 252 Emerson Hall, 14853, Ithaca, NY, U.S.A aut NATIONALLICENCE 700 1- Tanksley S. Department of Plant Breeding and Biometry, Cornell University, 252 Emerson Hall, 14853, Ithaca, NY, U.S.A aut NATIONALLICENCE 773 0- Netherlands Journal of Plant Pathology Kluwer Academic Publishers 98(1992-03-01), 211-214 0028-2944 98<211 1992 98 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer