EXPANSION OF TRAIT OF GIBBERELLIN-INDUCED DORMANCY IN THE TERTIARY RELICT SPECIES OF THE GENUS DIOSCOREA (DIOSCOREACEAE)

Authors
OKAGAMI N TANNO N KAWAI M HIRATSUKA A SATOH K TERUI K
Citation
N. Okagami et al., EXPANSION OF TRAIT OF GIBBERELLIN-INDUCED DORMANCY IN THE TERTIARY RELICT SPECIES OF THE GENUS DIOSCOREA (DIOSCOREACEAE), Plant growth regulation, 22(2), 1997, pp. 137-140
Citations number
23
Categorie Soggetti
Plant Sciences
Journal title
Plant growth regulation → ACNP
ISSN journal
01676903
Volume
22
Issue
2
Year of publication
1997
Pages
137 - 140
Database
ISI
SICI code
0167-6903(1997)22:2<137:EOTOGD>2.0.ZU;2-B
Abstract
Effects of the application of gibberellin A(3) (GA(3)) on sprouting of rhizomes and germination of seeds were tested in five species of the genus Dioscorea which are considered to be Tertiary relicts growing di sjunctively in the Appalachians, the Balkans, and the Caucasus. Applie d GA(3) at higher than 1 mu M markedly inhibited sprouting of rhizomes of all species. However, inhibition of seed germination of these spec ies by GA(3) application was not observed. It is hypothesized that bef ore disjunction in the Tertiary period GA induced dormancy probably pr evailed in rhizomes of all members of the genus Dioscorea.