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Genetic transmission of potato leafhopper resistance from recurrent selection populations in potatoSolanum tuberosum L. Gp. tuberosum

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Abstract

Solanum tuberosum L. Gp. Tuberosum populations recurrently selected for resistance to potato leafhopper (PLH),Empoasca fabae (Harris), were crossed with ten PLH susceptible Gp. Tuberosum breeding clones and cultivars to test for genetic transmission of resistance on a population basis.

When measured against the unselected population, seven generations of recurrent selection reduced nymphal infestation levels by 68% and hopperburn severity by 39%. Comparing progeny populations from ‘unselected population’ X ‘susceptible clones’ with ‘generation 7 population’ X ‘susceptible clones’ the nymphal infestation level was 35% lower and hopperburn severity 14% less in the latter cross. Therefore, roughly half the gain in nymphal resistance and about one third the gain in hopperburn resistance were transmitted to the progeny populations.

Compendio

Poblaciones deSolanum tuberosum L. Gp. Tuberosum seleccionadas recurrentemente para resistencia a la cigarrita de la papa (PLH),Empoasca fabae, Harris, fueron cruzadas con diez clones y cultivares del Gp. Tuberosum, susceptibles a PLH, para probar la transmisión genética de la resistencia en base a una población.

Siete generaciones de selección récurrente, en comparación con la población no seleccionada, redujeron los niveles de infestación aproximadamente en 68% y la severidad del quemado en más o menos 39%. Comparando las poblaciones en las progenies de ‘población no seleccionada’ × ‘clones susceptibles’ con las de ‘población de séptima generación’ × ‘clones susceptibles’, el nivel de infestación con ninfas fue 35% más bajo y la severidad del quemado 14% menor en el último cruzamiento. Por lo tanto, aproximadamente la mitad del aumento en resistencia a las ninfas y cerca de un tercio del aumento en resistencia al quemado fue transmitido a las poblaciones de progenies.

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Sanford, L.L., Ladd, T.L. Genetic transmission of potato leafhopper resistance from recurrent selection populations in potatoSolanum tuberosum L. Gp. tuberosum. American Potato Journal 64, 655–662 (1987). https://doi.org/10.1007/BF02853910

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