Sympatric species of Hibbertia (Dilleniaceae) vary in dormancy break and germination requirements: implications for classifying morphophysiological dormancy in Mediterranean biomes | Zendy

Siti N. Hidayati | Zendy; Jeffrey L. Walck | Zendy; David J. Merritt | Zendy; Shane R. Turner | Zendy; D. W. Turner | Zendy; Kingsley W. Dixon | Zendy

Open Access

Sympatric species of Hibbertia (Dilleniaceae) vary in dormancy break and germination requirements: implications for classifying morphophysiological dormancy in Mediterranean biomes

Author(s) -

Siti N. Hidayati,

Jeffrey L. Walck,

David J. Merritt,

Shane R. Turner,

D. W. Turner,

Kingsley W. Dixon

Publication year - 2012

Publication title -

annals of botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.567

H-Index - 176

eISSN - 1095-8290

pISSN - 0305-7364

DOI - 10.1093/aob/mcs034

Subject(s) - biology , dormancy , sympatric speciation , biome , germination , seed dormancy , mediterranean climate , botany , ecology , ecosystem

Several ecologically important plant families in Mediterranean biomes have seeds with morphophysiological dormancy (MPD) but have been poorly studied. The aim of this study was to understand the seed ecology of these species by focusing on the prominent, yet intractably dormant Australian genus Hibbertia. It was hypothesized that the slow germination in species of this genus is caused by a requirement for embryo growth inside the seed before germination, and that initiation of embryo growth is reliant upon a complex sequence of environmental cues including seasonal fluctuations in temperature and moisture, and an interplay with light and smoke. Using the results, the classification of the MPD level in species of Hibbertia is considered.

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