SEGREGATION ANALYSIS OF ISOZYME MARKERS ON ISOLATED MICROSPORE-DERIVED EMBRYOS IN BRASSICA-NAPUS L

Citation
N. Foisset et al., SEGREGATION ANALYSIS OF ISOZYME MARKERS ON ISOLATED MICROSPORE-DERIVED EMBRYOS IN BRASSICA-NAPUS L, Plant breeding, 110(4), 1993, pp. 315-322
Citations number
30
Categorie Soggetti
Plant Sciences",Agriculture
Journal title
ISSN journal
01799541
Volume
110
Issue
4
Year of publication
1993
Pages
315 - 322
Database
ISI
SICI code
0179-9541(1993)110:4<315:SAOIMO>2.0.ZU;2-A
Abstract
The segregation of isozyme genetic markers was studied on embryos aris ing from isolated microspore cultures in five rapeseed F1 hybrid genot ypes. Out of the ten isozyme genes considered, five (Aco-1, Aco-3, Lap -1, Pgm-3, Tpi-1) did not segregate according to expected Mendelian ra tios in at least two Fl crosses. F2 plants, generated from the same hy brids, included in the analysis, were free of segregation distortions. Linkage analysis between each segregating enzyme locus in each progen y revealed independence between these markers. In this paper, the resu lts of the linkage analysis as well as the origins of the distortions are discussed. The existence of androgenic embryogenesis genes may be responsible for the abnormal segregations of the five isozyme genes.