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A cytogenetic study of the progenies of hybrids between Brassica napus and Brassica oleracea, Brassica bourgeaui, Brassica cretica and Brassica montana
Author(s) -
Inomata N.
Publication year - 2002
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 - 10.1046/j.1439-0523.2002.00695.x
Subject(s) - brassica , hybrid , biology , backcrossing , brassica oleracea , botany , interspecific hybridization , somatic fusion , pollen , brassica carinata , genetics , somatic cell , gene
In this cytogenetic study the progeny of all crosses were investigated in F 1 , F 2 and backcross (BC 1 ) hybrids. Brassica napus and F 1 hybrids between B. napus and B. oleracea , and between B. napus and three wild relatives of B. oleracea (B. bourgeaui, B. cretica and B. montana ). Each of the wild relatives has 18 somatic chromosomes. Interspecific F 1 hybrids were obtained through ovary culture mean. These had 28 and 37 chromosomes and their mean pollen fertility was 10.7% and 93.0%, respectively. Many F 2 and BC 1 seeds were harvested from the F 1 hybrids with 37 chromosomes after self‐pollination and open pollination of the F 1 hybrids, and backcrossing with B. napus. Many aneuploids were obtained in the F 2 and BC 1 plants. It is evident from these investigations that the F 1 hybrids may serve as bridge plants to improve B. napus and other Brassica crops.