The effectiveness of using a minituber crop for selection of agronomic characters in potato breeding programmes |
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Authors: | J Gopal Raj Kumar G S Kang |
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Institution: | (1) Division of Crop Improvement, Central Potato Research Institute, Shimla, 171001 HP, India;(2) Central Potato Research Station, Jalandhar, P.O. Model Town, 141004 Pb., India |
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Abstract: | Summary Performance of 20 potato genotypes was studied for seven agronomic characters in crops raised from minitubers and normal seed
tubers. Correlation coefficients were computed between minituber crop and normal seed crop in order to study the selection
efficiency at minituber crop level. The performance of normal seed crop was significantly better than the minituber crop for
various characters including tuber yield and its components. Correlation coefficients between minituber and normal seed crop
were significant for various characters except number of stems and number of tubers. Highest correlation coefficient (r=0.86)
was for tuber yield followed by average tuber weight (r=0.67) and number of nodes (r=0.63). The results suggest that selection
for tuber yield can be practised at the minituber crop level in potato breeding programmes |
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Keywords: | Solarium tuberosum L selection procedure yield yield components |
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