The necessity for testing germination of fresh seeds in studies on diaspore heteromorphism as a life-history strategy

Jerry M. Baskin, Juan J. Lu, Carol C. Baskin, Dun Y. Tan

Research output: Contribution to journalReview articlepeer-review

11 Scopus citations

Abstract

Many studies have compared diaspore dispersal ability and degree of dormancy in the two diaspores of dimorphic plant species. A primary goal of these studies was to determine if germination and dispersal characteristics of the two morphs fit within a high risk-low risk (bet-hedging) life-history strategy, i.e. high dispersal/low dormancy in one morph versus low dispersal/high dormancy in the other one. In a survey of 26 papers on 28 diaspore dimorphic species, we found that in 12 of the studies, which were published between 1978 and 2008, seeds were stored, and thus possibly afterripened, before they were tested for germination. The 14 papers that tested fresh seeds were published between 1963 and 2010. Failure to test fresh seeds likely resulted in misinterpretation of the diaspore dispersal/dormancy strategy in some of the species investigated. We conclude that it is imperative that fresh seeds be tested for germination in order to be certain that the correct relationship between dispersal and dormancy is elucidated, and thus that the correct interpretation is made concerning life-history strategy and bet-hedging, in dimorphic species.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalSeed Science Research
Volume23
Issue number2
DOIs
StatePublished - Jun 2013

Keywords

  • afterripening
  • bet-hedging
  • diaspore dispersal
  • dimorphic plants
  • fresh seeds
  • high risk-low risk heteromorphism
  • seed dormancy
  • stored seeds

ASJC Scopus subject areas

  • Plant Science

Fingerprint

Dive into the research topics of 'The necessity for testing germination of fresh seeds in studies on diaspore heteromorphism as a life-history strategy'. Together they form a unique fingerprint.

Cite this