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Combining ability analysis in Bt cotton (Gossypium hirsutum L.) to harness high yield under contrasting planting densities through heterosis breeding

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Biometric analysis was taken up to assess the combining ability of set of Bt cotton parents to harness high yield under contrasting planting densities through heterosis breeding. Twenty test crosses were generated out of Line (5) X Tester (4) mating design involving selected parents with diverse plant architecture. Field experimentation with randomized complete block design (RCBD) with three replicates was adopted to generate the quantitative data on maturity, plant architecture, yield components and key fibre quality traits under conventional density planting (CDP) and high density planting (HDP). | Combining ability analysis in Bt cotton Gossypium hirsutum L. to harness high yield under contrasting planting densities through heterosis breeding