ISSN:
1432-2242
Keywords:
Arachis
;
Autotetraploid
;
Chromosome pairing
;
Genomic relationships
;
Recombinations
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Autotetraploids were established from 8 diploid wild species of section Arachis. In all the autotetraploids the chromosomes paired largely as bivalents even though they possess the ability to pair as multivalents. Pollen and pod fertility in the C1 generation were not directly associated with chromosome pairing. The C2 generation autotetraploids showed a gradual increase in bivalent associations and pollen and pod fertility. The identification of two genomes, A and B, in the diploid species and in the tetraploid, A. hypogaea, of the section Arachis, a fairly good crossability, and the type of chromosome associations observed in hybrids between A. hypogaea and the autotetraploids of wild Arachis species indicated good prospects of utilizing autotetraploids as genetic bridges in transferring desired traits from these taxa into groundnut.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00266988
