Hybrid selection of potatoe species for resistance to Phytophthora infestans (Mont) de Bary, male fertility and productive potential
An experiment was carriet out in one of the greenhouses of the Natíonal University of Colombia located in Bogotá, between 1988 and 1989. The objetive was to evaluate. the resistance to P. infestans of the progenies of 51 crosses (F1 and advanced) that included in their pedigree wild, primitive specias and/or cultivated potatoes. Then after a first cycle of selection the chosen genotypes were evaluated in the fieldfor resistance to the disease, for male fertility and productive potentíal (Kg/plant). Under greenhouse conditions was founda good resistance to no especific races of P. infestans in the progenies of the simple cross with phureja, that included the wild spicies polyadenium, stolonilferúm, iopetalum, avilesii,okadae, and susceptibility in those that had dodsli, abancayense, ambosinum, canasense, gandarillasii, pempesense, marinasense and stenaie« wilds. At tha and of the second cycle of evaluation in the fielcfihere were selected 27 genotypes: 5 of simple crosses, 9 of triple crosses,2 of multiple crosses that included wild species in their pedigree (avilessi, brachycarpum, stoloniterum, iopetalum, hougasii, acaule) and the other 11 included primitiveor advanced genotypes. An excellent productive potential wasfound in genotypes of interespectific cross of avilesii x phureja, and genotypes of triple eross that ineluded the hougasii or sceute speeies. The male fertility of the evaluatedgenotypes oseillated from sterility to high fertility.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
1990
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| Online Access: | https://revistas.unal.edu.co/index.php/agrocol/article/view/21001 |
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