SEED-GERMINATION IN THE FYNBOS FIRE EPHEMERAL, SYNCARPHA-VESTITA (L) B-NORD IS PROMOTED BY SMOKE, AQUEOUS EXTRACTS OF SMOKE AND CHARRED WOOD DERIVED FROM BURNING THE ERICOID-LEAVED SHRUB, PASSERINA-VULGARIS THODAY

被引：45

作者：

BROWN, NAC

机构：

[1] Conservation Biology Research Unit, National Botanical Institute Kirstenbosch, Claremont, 7735

来源：

INTERNATIONAL JOURNAL OF WILDLAND FIRE | 1993年 / 3卷 / 04期

关键词：

SEED GERMINATION; PLANT-DERIVED SMOKE; CAPE FLORISTIC REGION; ASTERACEAE; THYMELAEACEAE;

D O I：

10.1071/WF9930203

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Periodic fires are a natural phenomenon in fynbos, which is the dominant vegetation type in the Cape floristic region. Fire-stimulated germination has been reported for a number of fynbos species. The promotion of seed germination in the fynbos fire ephemeral, Syncarpha vestita (L.) B.Nord. (Asteraceae), by plant-derived smoke and aqueous smoke extracts derived from stem and leaf material of the ericoid-leaved shrub, Passerina vulgaris Thoday (Thymelaeaceae), reported by Brown (1993), was confirmed in this study. In addition, for the first time, aqueous extracts of charred wood alone have been shown to promote seed germination in a species of fynbos. The fact that a number of derivatives of P. vulgaris plant material all showed germination-promotion activity poses the question as to whether there is one bioactive substance or whether the activity of each derivative depends on a different substance.

引用

页码：203 / 206

页数：4

共 14 条

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[6] Keeley J.E., A Californian’s view of fynbos, The Ecology of Fynbos, pp. 372-388, (1992)
[7] Keeley S.C., Charred wood stimulated germination of two fire-following herbs of the California chaparral and the role of hemicellulose, American Journal of Botany, 7, pp. 1289-1297, (1986)
[8] Killian D., Comparative seed biology and coexistence of two fynbos shrub species with soil- stored seed banks, Journal of Vegetation Science, 3, pp. 637-646, (1992)
[9] Kruger F.J., Effects of fire on vegetation structure and dynamics, Ecological Effects of Fire in South African Ecosystems, pp. 219-243, (1984)
[10] Kruger F.J., Bigalke R.C.J., Fire - Fynbos. In: Ecological Effects of Fire in South African Ecosystems, pp. 67-114, (1984)

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