DNA polymorphism in Allium cepa cytoplasms and its implications concerning the origin of onions |
| |
Authors: | A. G. L. de Courcel F. Vedel J. M. Boussac |
| |
Affiliation: | (1) Clause Semences Professionnelles, F-91221 Bretigny sur Orge, France;(2) Génétique Moléculaire des Plantes, UA 115, Bâtiment 360, Université de Paris-Sud, F-91405 Orsay Cedex, France |
| |
Abstract: | Summary Mitochondrial and chloroplast DNA was isolated from fertile and cytoplasmic male sterile cultivars of cultivated onions. Restriction fragment length polymorphism led to the distinction between cytoplasms S and M. Mitochondrial DNA patterns from S cytoplasms appeared dentical and characterized mostly male sterile lines. An open-pollinated variety was found to bear this cytoplasm and thought to be the origin of S types. Mitochondrial DNA patterns from M cytoplasms were subdivided into four types, M1 and M2 corresponding to normal N cytoplasm, M3 and M4 probably corresponding to T cytoplasms. S and M cytoplasms were also distinguished by chloroplast DNA restriction patterns. Our results confirm previous genetic distinction between S, N and T cytoplasms. |
| |
Keywords: | Mitchondrial DNA Chloroplast DNA DNA polymorphism Cytoplasmic male sterility Onion |
本文献已被 SpringerLink 等数据库收录! |
|