Sources of Resistance to Whitefly (Bemisia spp.) in Wild Populations of Solanum lycopersicum var. Cerasiforme (Dunal) Spooner G.J. Anderson et R.K. Jansen in Northwestern Mexico

Autor: Sergio Hernández-Verdugo, Judith Márquez-Guzmán, Juan Fornoni, José Antonio Garzón-Tiznado, Juan Núñez-Farfán, Ken Oyama, Pedro Sánchez-Peña
Rok vydání: 2006
Předmět:
Zdroj: Genetic Resources and Crop Evolution. 53:711-719
ISSN: 1573-5109
0925-9864
DOI: 10.1007/s10722-004-3943-9
Popis: Genetic variability of wild populations, closely related to domesticated species, constitute important genetic resources for plant breeding programs. In this paper, we analysed the variation of eight wild populations of Solanum lycopersicum var. cerasiforme in a common garden experiment for levels of plant infestation by whitefly, leaf trichome density as a defensive character preventing infestation by whitefly, and the effect of whitefly incidence into vegetative and reproductive plant characters. Number of adults of whitefly was recorded in the eight wild populations of S. lycopersicum var. cerasiforme, one population of the wild species S. habrochaites (C-360), and one of a cultivated variety of S. lycopersicum (Rio Grande). There were significant differences among the wild populations of S. lycopersicum var. cerasiforme in the average level of whitefly incidence and trichome density. Cultivated tomatoes had the higher incidence of whiteflies ( $$\bar{x}$$ = 7.50 ± 0.14) followed by plants of S. lycopersicum var. cerasiforme ( $$\bar{x}$$ = 2.02 ± 0.92) and plants of S. habrochaites with the lowest incidence ( $$\bar{x}$$ = 0.36 ± 0.35). Whitefly incidence was negatively correlated with trichome density (r = − 0.38, p
Databáze: OpenAIRE
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