Full TGIF Record # 4809
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Author(s):Hagon, M. W.; Chan, C. W.
Author Affiliation:Div. of Pl. Industry, CSIRO, Canberra, A.C.T., Australia 2601
Title:The effects of moisture stress on the germination of some Australian native grass seeds
Source:Australian Journal of Experimental Agriculture and Animal Husbandry. Vol. 17, No. 84, 1977, p. 86-89.
Publishing Information:Melbourne: American Institute of Agricultural Science
Keywords:TIC Keywords: Themeda triandra; Bothriochloa macra; Danthonia; Stipa bigeniculata; Lolium perenne; Seed germination; Soil moisture; Osmotic potential; Water; Soil types
Abstract/Contents:The effects of moisture stress on the germination of the native grasses Themeda australis, Bothriochloa macra, Danthonia spp. and Stipa bigeniculata and the introduced species (a) perennial ryegrass were investigated under laboratory and glasshouse conditions. At osmotic potentials between -3 and -10 bar and soil water potentials between -4.5 and -10 bar, the level of germination of (a) was greater than that of the native grasses. Also, at any given soil water potential, the levels of germination of both (a) and the native grasses were greater in a clay soil than in a sandy one. When native grass seeds were sown on the surface of the soil in flats in a glasshouse there was no germination in the absence of added water, even though the initial soil moisture content was as high as 40% in some cases and a straw mulch was applied. When flats were watered daily, S. bigeniculata had the highest percentage establishment and T. australis the least. Establishment of all species was reduced by a decline in soil m.c.
Geographic Terms:Australia, Australian Capital Territory
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hagon, M. W., and C. W. Chan. 1977. The effects of moisture stress on the germination of some Australian native grass seeds. Aust. J. Exp. Agric. Anim. Husbandry. 17(84):p. 86-89.
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