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Meiotic analysis of the hybrids between cultivated and synthetic tetraploid groundnuts

OAR@ICRISAT

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Relation http://oar.icrisat.org/2372/
http://dx.doi.org/10.1111/j.1439-0523.2011.01901.x
 
Title Meiotic analysis of the hybrids between cultivated and synthetic tetraploid groundnuts
 
Creator Mallikarjuna, N
Srikanth, S
Vellanki, R K
Jadhav, D R
Das, K
Upadhyaya, H D
 
Subject Groundnut
 
Description Groundnut is susceptible to a range of diseases and pests owing to its narrow genetic base. Closely related wild relatives of groundnut are diploid, and crossability between diploid wild relatives and tetraploid cultivated groundnut is difficult. Amphidiploid and autotetraploid groundnuts, which are tetraploids (also called synthetic groundnut), were developed at ICRISAT. Crossability between cultivated tetraploid groundnut and synthetic tetraploid groundnut was a straightforward process. Crosses between cultivated and synthetic tetraploid groundnuts yielded mature seeds. The resultant F1 hybrids were cytologically analysed to study the relationship between the chromosomes/genomes of the parents i.e. between Arachis hypogaea cultivars and synthetic tetraploid groundnut. Meiotic study showed that there was good chromosome pairing between the parental species resulting in high pollen fertility. Thus, development of synthetic groundnut is a feasible way of utilizing important wild species gene pool of Arachis, closely related to cultivated groundnut, for the improvement to the crop
 
Publisher Blackwell Publishing
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/2372/1/PlantBreeding_131_1_135-138_2012.pdf
Mallikarjuna, N and Srikanth, S and Vellanki, R K and Jadhav, D R and Das, K and Upadhyaya, H D (2012) Meiotic analysis of the hybrids between cultivated and synthetic tetraploid groundnuts. Plant Breeding, 131 (1). pp. 135-138. ISSN 1439-0523