Abstract
The rate of selfing in the wild, tuber-bearing speciesS. gourlayi Hawkes (2n = 4x = 48) andS. oplocense Hawkes (2n = 6x = 72) was estimated from progeny of plants nulliplex for the “parallel spindles (ps) allele. The estimated values for plants grown in experimental plots were 22% forS. gourlayi and 1% forS. oplocense. The quantitative method used appears to be a simple and efficient way to calculate selfing rates in polyploids. Knowledge of selfing rates is useful for basic population genetic studies and for plant breeding and seed production of economic crops. There is a need for genetic markers inSolanum species if selfing rates are to be taken into consideration for the selection of an appropriate breeding method for the production of true potato seed.
Resumen
La proporción de autofecundación en las especies tuberiferas silvestresS. gourlayi Hawkes (2n = 4x = 48) yS. oplocense Hawkes (2 = 6x = 72) fue calculada aproximadamente por prueba de progenie de plantas nuliplexas para el alelo “husos paraleslos” (ps). Los valores estimados para plantas cultivadas en parcelas experimentales fueron 22% paraS. gourlayi y 1% paraS. oplocense. El método cuantitativo usado parece ser simple y eficiente para calcular la proporción de autofecundación en poliploides. El conocimiento de la proporción de autofecundación es útil para estudios básicos de genética de poblaciones y para mejoramiento de plantas y producción de semillas en cultivos económicos. Es necesario encontrar marcadores genéticos en especies deSolanum si la proporción de autofecundación va a ser tendia en consideración en la elección de un método apropiado para la producción de semilla botánica de papa.
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Paper No. 2525 from the Laboratory of genetics. Research supported by the College of Agriculture and Life Sciences; International Potato Center; SEA, USDA, CRGO 5901-0410-8-0180-0; and Frito-Lay, Inc.
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Camadro, E.L., Peloquin, S.J. Selfing rates in two wild polyploid solanums. American Potato Journal 59, 197–204 (1982). https://doi.org/10.1007/BF02889520
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DOI: https://doi.org/10.1007/BF02889520