GENETIC DIVERGENCE FOR LATE BLIGHT FIELD RESISTANCE COMPONENTS AND MORPHOLOGICAL TRAITS


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Authors

  • Ranjana Chauhan
  • B.P. Singh

Abstract

Genetic divergence was studied in 60 potato genotypes belonging to wild / semicultivated Solanum species using ten morphological traits and four traits related to field resistance to Phytoplhora infeslans. Based on morphological traits, the genotypes were grouped into six clusters. The genotypes belonging to S. phureja, dihaploids and S. stoloniferum did not follow any trend since they were distributed in more than one cluster. Multivariate analysis based on late blight field resistance components divided the genotypes into five clusters. Of these, dusters II and III had maximum divergence ( D=36.08 ) suggesting that intermating between the genotypes included in these two clusters are likely to throw segregants with better resistance to late blight.


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Author Biographies

  • Ranjana Chauhan
    Directorate of Wheat Research, Shimla 171 001 (Himachal Pradesh)
  • B.P. Singh
    Central Potato Research Institute Campus (CPRlC), Modipuram 250 110 (Uttar Pradesh)

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Issue

Vol. 31 No. 1-2 (2004)

Section

Articles

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The copyright of the articles published in Potato Journal is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

Chauhan, R., & Singh, B. (2014). GENETIC DIVERGENCE FOR LATE BLIGHT FIELD RESISTANCE COMPONENTS AND MORPHOLOGICAL TRAITS. Potato Journal, 31(1-2). https://epubs.icar.org.in/index.php/PotatoJ/article/view/38777