Heat Requirement for Germination of the Grass, Panicum laevinode

R.A. GRAHAM; S.K. FLORENTINE; J.E.D. FOX

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Heat Requirement for Germination of the Grass, Panicum laevinode

机译：萌发草的热需求

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Annual grasses are important components of vegetation, especially where perennial grasses have declined from overgrazing. Panicum laevinode is an annual grass that occurs in large numbers in grassy Eucalyptus victrix L. Johnson and K. Hill coolibah woodland in Pilbara, Western Australia. Little is known about the seed germination pattern and requirements of this grass. Our aim was to examine the effect of heat pre-treatment on seed germination of P. laevinode. Only 12% germination was observed from seeds pre-treated at 60℃ for periods ranging from 1 to 8 weeks. However seed viability study showed that 61.5% and 71.5% of seeds were viable from 3 and 17 months respectively. Germination study did not reflect results of the viability test.

机译：一年生草是植被的重要组成部分，尤其是多年生草由于过度放牧而减少的地方。 Panicum laevinode是一年生的草，大量出现在西澳大利亚州皮尔巴拉（Pilbara）的象草桉木L. Johnson和K. Hill coolibah林地中。人们对这种草的种子萌发方式和需求知之甚少。我们的目的是研究热处理对P. laevinode种子发芽的影响。在60℃下预处理1至8周的种子仅观察到12％的发芽率。但是，种子活力研究表明，分别在3个月和17个月内，有61.5％和71.5％的种子具有活力。萌发研究未反映出生存力测试的结果。

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来源
《International Journal of Ecology & Enviromental Sciences》 |2002年第2期|p.143-145|共3页
作者
R.A. GRAHAM; S.K. FLORENTINE; J.E.D. FOX;
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作者单位

School of Environmental Biology, Curtin University of Technology, Perth, WA 6845, Australia;

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正文语种 eng
中图分类环境科学、安全科学;
关键词
grass; panicum; seed-bank; semi-arid; woodland;

机译：草;恐慌种子库半干旱林地;

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Heat Requirement for Germination of the Grass, Panicum laevinode

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