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Utilization of wild relatives in genetic improvement of Arachis hypogaea L. Part 2: Chromosome complements of species in section Arachis

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Relation http://oar.icrisat.org/7468/
http://dx.doi.org/10.1007/BF00272846
 
Title Utilization of wild relatives in genetic improvement of Arachis hypogaea L. Part 2: Chromosome complements of species in section Arachis
 
Creator Singh, A K
Moss, J P
 
Subject Groundnut
 
Description Analysis of D2 values based on chromosome pair arm ratios for nine diploid Arachis taxa revealed two groups, one represented solely by A. batizocoi. In the larger group, A. villosa and A. correntina were closely related karyotypically and on D2 distance, while A. cardenasii formed a distinct subgroup differing from other species in that chromosome 10 is longer. This grouping was confirmed by canonical analysis. Most of the variation between the diploid species was attributed to chromosome pairs 1, 7, 8 and 9. On the basis of karyotype symmetry, A. villosa and A. correntina, which have arm ratios close to 1, are considered the most primitive diploid species and A. batizocoi, which has one chromosome pair with a subterminal centromere, the most advanced. The tetraploids A. monticola and A. hypogaea were karyotypically similar, although there was a difference in the number of chromosome pairs with a secondary constriction. Karyotype similarities, especially between chromosomes with secondary constriction, suggest that A. cardenasii is an ancestor of the tetraploid species
 
Publisher Springer Verlag
 
Date 1982
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/7468/1/TAG_61_305-314_1982.pdf
Singh, A K and Moss, J P (1982) Utilization of wild relatives in genetic improvement of Arachis hypogaea L. Part 2: Chromosome complements of species in section Arachis. Theoretical and Applied Genetics, 61 (4). pp. 305-314. ISSN 0040-5752