Field Screening of cotton accessions for resistance to Cotton stem weevil Pempherulus affinis Faust

doi:https://doi.org/10.29321/maj.10.100573

Open AccessArticle10.29321/maj.10.100573

Field Screening of cotton accessions for resistance to Cotton stem weevil Pempherulus affinis Faust

RATNA KUMARI B,S. Chandrasekaran-2008-01-01-Madras Agricultural Journal

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TL;DRAbstract

Among the many varieties tried for resistance, Nadan in Asiatic cottons and Bourbon, Quebrandinho, Verdao and Moco in American Group were highly resistant. Unfortunately, all the five resistant varieties were perennial, late in habit and in addition the members of the American group were defective in boll dehiscence and susceptible to leaf hoppers. Therefore, a study was conducted to find out resistant varieties among 153 cotton accessions.

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Among the many varieties tried for resistance, Nadan in Asiatic cottons and Bourbon, Quebrandinho, Verdao and Moco in American Group were highly resistant. Unfortunately, all the five resistant varieties were perennial, late in habit and in addition the members of the American group were defective in boll dehiscence and susceptible to leaf hoppers. Therefore, a study was conducted to find out resistant varieties among 153 cotton accessions.

Keywords

BiologyResistance (ecology)HabitPerennial plantAgronomyWeevilMain stemHorticulture

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