Addition of each chromosome of Brassica oleracea to the chromosome complement of B. rapa results in a series of nine monosomic alien addition lines. Heneen et al. report the development and use of such a series for mapping genes, determining chromosome homoeology, and for assigning genetic linkage groups to specific chromosomes. Seven B. oleracea chromosomes carry major or minor genes controlling seed colour either maternally or through the embryo. Chromosome homoeology prevails largely between chromosomes occupying similar karyotypic positions. The two species are the progenitors of oilseed rape, B. napus, and the results have potential applications in marker-assisted selection and breeding for yellow seeds.
You may also like
Directional gene conversion and homogenization of rDNA shapes evolution in Brassica
Brassica napus (AACC, oilseed rape) is an allotetraploid species derived from the putative progenitor diploid species B.rapa (AA) and B. oleracea (CC). To assess the influence of intensive breeding conditions on the...
February 15, 2017
Physical mapping of a male-sterile locus in Brassica
Spontaneous male sterility is an advantageous trait for both producing hybrids and understanding the developmental process of the male reproductive unit in many crops. Lu et al. use a map-based cloning strategy together...
February 25, 2013
Interspecific chromosome exchanges in polyploid Musa
Edible bananas originated mainly from two wild species, Musa acuminata and M. balbisiana, and recombinations between chromosomes occur in polyploid varieties. Jeridi et al. compare homoeologous pairing in a diploid...
December 26, 2012
Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use.
To find out more, including how to control cookies, see here: Cookie Policy
To find out more, including how to control cookies, see here: Cookie Policy
Read this in your language
@BotanyOne on Mastodon
Loading Mastodon feed...