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Genetic base and relatedness of Indian early maturing potato (Solanum tuberosum) selections

Published online by Cambridge University Press:  05 October 2010

R. KUMAR*
Affiliation:
Crop Improvement Section, Central Potato Research Station, Post Bag No. 1, Model Town P.O., Jalandhar 144 003, India
G. S. KANG
Affiliation:
Crop Improvement Section, Central Potato Research Station, Post Bag No. 1, Model Town P.O., Jalandhar 144 003, India
S. K. PANDEY
Affiliation:
Central Potato Research Institute, Shimla 171 001, India
J. GOPAL
Affiliation:
Central Potato Research Institute, Shimla 171 001, India
*
*To whom all correspondence should be addressed. Email: rajcprs@hotmail.com; rajcprs@rediffmail.com

Summary

Pedigree analysis was used to study the genetic background of 66 Indian early maturing potato selections, the pedigree of which was traced back to 35 ancestors. Six of the 35 contributed 0·42 of the genetic base, which shows the narrow genetic base of Indian early maturing genotypes. Genotypes 2814 (a)1 (f=0·145) and 3069 (d)4 (f=0·145) were the ancestors which appeared most frequently. Based on the coefficient of relationship, the 66 selections were grouped into seven groups with one common ancestor in almost all the selections within a group. The genotypes Kufri Ashoka, Kufri Pukhraj, AGB-69-1, Kufri Jyoti, Kufri Alankar, Kufri Lauvkar and Kufri Kuber were identified as very important parents/ancestors, carrying specific gene complexes valuable in new selections. Crosses between selections from different diversity groups can result in the selection of useful clones while increasing or maintaining genetic diversity, which is desirable to ensure sustainable breeding progress in the future.

Type
Crops and Soils
Copyright
Copyright © Cambridge University Press 2010

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