Meiotic study of three synthesized tetraploid groundnut

Srikanth, S and Shilpa, K and Jadhav, D and Satyanarayana, T and Mallikarjuna, N (2012) Meiotic study of three synthesized tetraploid groundnut. Indian Journal of Genetics and Plant Breeding , 72 (3). pp. 332-335. ISSN 0975-6906

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Closely related wild relatives (diploid) of groundnut (Arachis hypogaea L.), a (tetraploid), have broad based resistance to a range of diseases and pests. Direct crosses between diploid relatives and tetraploid groundnut gives rise to undesirable triploids. There are no tetraploid relatives (except A. monticold) which can be easily crossed to transfer desirable traits. Hence amphidiploids were synthesized by combining A and B genome of Arachis species and the autotetraploid was synthesized by combining two B genome species. Diploid and tetraploid hybrids were cytologically analyzed to study the relationship between the chromosomes/genomes of the parents. The study showed that in the diploid hybrids, pollen fertility varied but in the tetraploids there was good recombination between the parental genomes resulting in high pollen fertility

Item Type: Article
Uncontrolled Keywords: Arachis species, amphidiploid, autotetraploid, meiosis, recombination, pollen fertility.
Subjects: Mandate crops > Groundnut
Others > Genetics and Genomics
Others > Entomology
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 28 Sep 2012 03:47
Last Modified: 28 Sep 2012 03:47
Official URL:
Acknowledgement: UNSPECIFIED
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