Production of segregating populations with resistance to the fruit borer from crosses between tomato and wild accessions of Lycopersicon spp. Producción de poblaciones segregantes resistentes al pasador del fruto a partir de cruzamientos entre tomate y accesiones silvestres de Lycopersicon spp.
2007
Lobo Mario | Vallejo Cabrera Franco Alirio | Restrepo Edwin
Interspecifics crosses between tomato plants L. esculentum and thirteen wild accessions of Lycopersicon spp. with resistance to the fruit borer were carried out. Six Hybrids population were produced which had low percentages of crossing efficiency and seed germination, and high amount of abnormal seeds. Seeds of four RC1 populations and four RC2 populations were obtained, which presented low percentages of backcrossing efficiency. Equally seeds of three F2 populations and two F3 population were produced which were obtained from a low number of fruits in comparison with the high amount of isolated Inflorescences. Key words: Interspecifics crosses, backcrossing, Lycopersicon esculentum, Neoleucinodes elegantalis, resistance.<br>Se hicieron cruzamientos interespecíficos entre plantas de tomate L. esculentum y trece accesiones silvestres de Lycopersicon spp. resistentes al pasador del fruto. Se produjeron seis poblaciones híbridas que presentaron porcentajes bajos de eficiencia en el cruzamiento y de germinación de semilla y alta cantidad de semillas anormales. Se obtuvieron semillas de cuatro poblaciones RC1 y cuatro poblaciones RC2, las cuales presentaron porcentajes bajos de eficiencia de retrocruzamiento. Igualmente se produjeron semillas de tres poblaciones F2 y dos poblaciones F3 las cuales se obtuvieron de un número bajo de frutos en comparación con la alta cantidad de inflorescencias aisladas. Palabras claves: Cruzamientos interespecíficos, retrocruzamiento, Lycopersicon esculentum, Neoleucinodes elegantalis, resistencia.
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