Factors Affecting Adoption of Insect Control and Other Practices Abroad

Samper, Armando

doi:10.1093/besa/14.2.128

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2000

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“…El insecto causa daño indirecto, como vector del virus de la hoja blanca, y directo, al ocasionar daño mecánico cuando se.alimenta y oviposita sobre la planta (Gálvez y Jennings, 1959). Este insecto ha causado grandes pérdidas en la producción de arroz en Colombia y América Latina (Samper, 1968;Zeigler et al, 1994).…”

Section: Introductionunclassified

Rice inheritance of resistance to mechanical damage caused by sogata

Pardey¹,

Cuevas-Pérez²,

Martínez³

et al. 2000

JAUPR

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The inheritance of resistance to mechanical damage in rice caused by sogata, Tagosodes orizicolus (Muir), was studied in cultivars with this resistance. Evaluation of F1 and F3 generations suggests that resistance to mechanical damage is controlled by a single dominant gene (A). This gene, present in cultivars Makalioka and Mudgo, is homozygous. The gene confers resistance, but its expression is modified by another gene (B). The action of the modifier gene is dependent on the genotype and the exposure to insect attack. For Mudgo, the modifier gene is in the homozygous form (bb), which accelerates the expression of the susceptible phenotype. In Makalioka, the dominant homozygous form (BB) retards the expression of susceptibility.

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Section: Introductionunclassified