Utilization of wild relatives in the genetic improvement of Arachis hypogaea L.: 8. Synthetic amphidiploids and their importance in interspecific breeding

    Singh, A K (1986) Utilization of wild relatives in the genetic improvement of Arachis hypogaea L.: 8. Synthetic amphidiploids and their importance in interspecific breeding. Theoretical and Applied Genetics, 72 (4). pp. 433-439. ISSN 0040-5752

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    Abstract

    Synthetic amphidiploids were established in 32 combinations involving 8 diploid wild species representing both A and B genomes of section Arachis. Bivalent and multivalent associations in the amphidiploids of 7 A genome species confirm that these species have identical genomes. Contrastingly, high bivalent frequencies in amphidiploids involving the A and B genome species suggest that A. batizocoi has a distinct 'B' genome that is partially homologous to the other genome 'A' represented in the rest of the species. Crossability, chromosome pairing and pollen and pod fertility in hybrids between A. hypogaea and amphidiploids have revealed that these amphidiploids can be used as a genetic bridge for the transfer of genes from the wild species into the cultivated groundnut.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Wild relatives, Genetic improvement, Arachis hypogaea, Synthetic amphidiploids, Interspecific breeding, Arachis, Amphidiploids, Genomes, Chromosome pairing, Recombinations
    Subjects: Others > Plant Breeding
    Others > Genetics and Genomics
    Depositing User: Mr Ramesh K
    Date Deposited: 21 Sep 2016 05:21
    Last Modified: 26 May 2017 05:09
    URI: http://oar.icrisat.org/id/eprint/9683
    Official URL: http://dx.doi.org/10.1007/BF00289523
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: The author is indebted to Mr. R.W. Gibbons, Leader, Groundnut Improvement Program, ICRISAT for his critical reading of the manuscript and suggestions. Thanks are also due to Mrs. Kamal Wankhede and A. Venkateshwar for technical assistance and to Mrs. Sashikala for secretarial assistance.
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