DISOMIC BEHAVIOR OF POLYPLOID TUBER-BEARING SOLANUM SPECIES

Citation
Kn. Watanabe et M. Orrillo, DISOMIC BEHAVIOR OF POLYPLOID TUBER-BEARING SOLANUM SPECIES, Idengaku Zasshi, 69(6), 1994, pp. 637-643
Citations number
24
Categorie Soggetti
Genetics & Heredity
Journal title
ISSN journal
0021504X
Volume
69
Issue
6
Year of publication
1994
Pages
637 - 643
Database
ISI
SICI code
0021-504X(1994)69:6<637:DBOPTS>2.0.ZU;2-8
Abstract
Meiotic configuration at microsporogenesis was examined in several wil d tetraploid and hexaploid taxa of tuber-bearing Solanum. A high frequ ency of bivalents was observed in all of the species studied: four tet raploid and one hexaploid taxa in Series Conicibaccata, one tetraploid taxon in Series Piurana, a Mexican tetraploid species in Series Longi pedicellata, and three hexaploid taxa in Series Demissa. An outlook on evolutionary significance of the cytologically disomic behavior in th e polyploid taxa of the tuber-bearing Solanum was presented. Further, a genetic efficiency in introgression was discussed for an efficient g enetic manipulation with these valuable, but under-utilized polyploid genetic resources.