Inheritance of body color in the brown planthopper, Nilaparvata lugens |
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| Authors: | A A Barrion and R C Saxena |
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| Institution: | (1) Department of Entomology, International Rice Research Institute (IRRI), P.O. Box 933, Manila, Philippines;(2) International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya |
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| Abstract: | The segregation frequencies of color phenotypes of F1, F2, and backcross progenies revealed that the body coloration of the brown planthopper, Nilaparavata lugens(Stål), exhibited multiple allelism. Monogene for color morphism exists in three allelic forms >-b
+ (brown or wild type), b
o (orange) and b
b (black). The dominance relationship was b
b>b
+>b
o. The relationship between phenotype and genotype in N. lugens was not fixed. The six possible genotypes produced eight phenotypes.
Résumé Les fréquences de ségrégation des différentes colorations de F1, F2 et des croisements en retour ont montré que la coloration du corps de Nilaparvata lugens est due à un multi-allèlisme. Le monogène pour la couleur existe sous trois formes allèliques: b+ (brun ou sauvage), bo (orange) et bb (noir). Les relations de dominance étaient: bb>b+>bo. On n'a pas établi les relatios entre phénotypes et génotypes chez N. lugens. Les 6 génotypes possibles produisent 8 phénotypes. |
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| Keywords: | brown planthopper color inheritance Delphacidae Homoptera Nilaparvata lugens |
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