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Chromosome pairing and fertility of interspecific hybrids between Trifolium repens L. and T. occidentale Coombe
Author(s) -
Hussain Syed Wajid,
Williams Warren Mervyn
Publication year - 2016
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12344
Subject(s) - trifolium repens , repens , biology , introgression , backcrossing , ploidy , hybrid , interspecific hybridization , botany , interspecific competition , chromosome pairing , polyploid , chromosome , white (mutation) , genetics , gene
Trifolium occidentale is a diploid wild relative with the potential to improve the drought and salt tolerances of white clover ( Trifolium repens ). Previous work has shown that it is possible to efficiently produce large T. repens × T. occidentale breeding populations using colchicine‐doubled (4×) T. occidentale . For effective introgression (backcross) breeding, it is also essential that interspecific chromosome pairing and recombination occur. In this study, it was apparent that chromosome pairing was occurring not only between T. occidentale and T. repens subgenomes, but also between the ancestral subgenomes of T. repens . Thus, interspecific hybridization has the potential for major genome recombination and opens the way for introgression of traits from T. occidentale into white clover.