Citas bibligráficas
Mendoza, G., (2021). Combinación de tolerancia a calor y resistencia a virus en una población de papas Tetraploides [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4757
Mendoza, G., Combinación de tolerancia a calor y resistencia a virus en una población de papas Tetraploides []. PE: Universidad Nacional Agraria La Molina; 2021. https://hdl.handle.net/20.500.12996/4757
@mastersthesis{renati/1115815,
title = "Combinación de tolerancia a calor y resistencia a virus en una población de papas Tetraploides",
author = "Mendoza Juarez, Grover Fraire",
publisher = "Universidad Nacional Agraria La Molina",
year = "2021"
}
Along the Peruvian coast, the high temperatures from December to February reduce potato yield and quality. Also, the potato viruses, PLRV, PVY and PVX are the most important biotic agents into the crop degeneration, which infect tuber seeds by transmitting diseases to the next generation. For this reason, the objective of this research was to improve the heat tolerance and resistance of potato cropping to the three viruses. Using line x tester mating design analysis, 12 cultivars resistant to PLRV were used as lines and five clones with extreme resistance to PVY and PVX and heat tolerance were used as testers. As result, the 60 progeny families obtained were screened by PVX and PVY in a greenhouse, using the mass inoculation technique with one sprinkling gun (IMPA) (CIP, 1990). Afterwards, the 60 hybrid families exposed to a field PLRV inoculation by vector aphids, were sown alternated a row of PLRV infected plants with Ticahuasi variety, considering every two lines by progeny. Then, two experiments were established in Lima and Tacna, using a completely randomized block design with three replicates. Results showed “Reiche” and “Primavera” varieties had high stability. In addition, two parental material (C91.612 PVX and PVY (C91.612) with extreme resistance were obtained, where the C91.640 clone showed also resistance to PLRV. In conclusion, the latter clones, which showed, along with C91.628 and C91.645, good performance will be part of a plant-breeding program at CIP.
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