Seed dormancy and germination of the subalpine geophyte Crocus alatavicus (Iridaceae)

Ziyan Fu, Dunyan Tan, Jerry M. Baskin, Carol C. Baskin

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Crocus alatavicus Regel et Sem. is a cormous perennial primarily distributed in central Asia that may have potential in horticulture; however, relatively little is known about seed dormancy in the genus Crocus. The primary aim of the present study was to identify the dormancy breaking and germination requirements of seeds of C. alatvicus and to assign them to a dormancy category. In its natural habitat, the underdeveloped embryo in C. alatavicus seeds grows in early summer, and radicles emerge in early autumn. However, cotyledon emergence is delayed until the following spring. Radicle emergence was promoted by warm stratification and cotyledon emergence by cold stratification. GA3 was ineffective in promoting either radicle or epicotyl emergence. We conclude that seeds of C. alatavicus have deep simple epicotyl morphophysiological dormancy of the type C1bB(root) - C3(shoot). To our knowledge, this is the first detailed study on the ecophysiology of seed dormancy and germination in the genus Crocus.

Original languageEnglish
Pages (from-to)376-382
Number of pages7
JournalAustralian Journal of Botany
Issue number5
StatePublished - 2013

Bibliographical note

Funding Information:
This research was funded by the National Natural Science Foundation of China (31060047, U1130301), the Key Program for International S & T Cooperation Projects of China (2011DFA31070) and the Special Foundation for State Major Basic Research Program of China (2011FY110200–8).


  • epicotyl dormancy
  • morphophysiological dormancy
  • underdeveloped embryo.

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science


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