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Ecology of hay-scented fern: Spore ...

Penrod, Kathy Ann.

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Ecology of hay-scented fern: Spore production, viability and germination.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Ecology of hay-scented fern: Spore production, viability and germination./
作者:	Penrod, Kathy Ann.
面頁冊數:	202 p.
附註:	Source: Dissertation Abstracts International, Volume: 61-12, Section: B, page: 6255.
Contained By:	Dissertation Abstracts International61-12B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9998410
ISBN:	0493069259

Ecology of hay-scented fern: Spore production, viability and germination.
Penrod, Kathy Ann.

Ecology of hay-scented fern: Spore production, viability and germination. - 202 p.

Source: Dissertation Abstracts International, Volume: 61-12, Section: B, page: 6255.

Thesis (Ph.D.)--The Pennsylvania State University, 2000.

Hay-scented fern interferes with hardwood forest regeneration, and timber harvests lead to vegetative expansion and colonization from viable soil sporebanks. Three experiments investigated hay-scented fern response to clearcut timber harvest, spore viability after two years of burial or storage, and gibberellic acid, calcium and calmodulin antagonists effects on spore germination. Ancillary studies are included in Appendices.

ISBN: 0493069259Subjects--Topical Terms:

1017726
Biology, Ecology.

Ecology of hay-scented fern: Spore production, viability and germination.
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500 $a Source: Dissertation Abstracts International, Volume: 61-12, Section: B, page: 6255.
500 $a Adviser: Larry H. McCormick.
502 $a Thesis (Ph.D.)--The Pennsylvania State University, 2000.
520 $a Hay-scented fern interferes with hardwood forest regeneration, and timber harvests lead to vegetative expansion and colonization from viable soil sporebanks. Three experiments investigated hay-scented fern response to clearcut timber harvest, spore viability after two years of burial or storage, and gibberellic acid, calcium and calmodulin antagonists effects on spore germination. Ancillary studies are included in Appendices.
520 $a In the first experiment, effects of time since clearcutting on density, fertility rate, frond growth and spore production of hay-scented fern were tested in a progressive series of annual clearcuts in central Pennsylvania. Data indicate that hay-scented fern changed resource allocation from vegetative (frond recruitment and growth) to sexual (spore) reproduction as time increased after clearcutting. Frond density was highest after the first growing season, frond growth was maximized after the third season, and spore production was highest after the fourth and fifth growing seasons, following clearcutting.
520 $a In the second experiment, effect of burial or storage time was tested on percentage germination of spores buried in forest soils, stored dry or stored wet for up to two years. No loss in viability for buried or dry-stored spores occurred after two years. Buried spores germinated more rapidly than dry- or wet-stored spores as burial or storage time increased. Wet-stored spores always showed lower viability than buried or dry-stored spores. Results show that hay-scented fern is capable of forming persistent, viable, long-term soil sporebanks, and has the long viability characteristic of non-chlorophyllous spores along with the rapid germination typical of chlorophyllous spores.
520 $a In the third experiment, effects of gibberellic acid, calcium, and calmodulin antagonists were tested on germination of spores cultured under 12 hour light-12 hour dark or 24 hour dark conditions. Gibberellic acid and calcium partially overcame the light requirement when spores were germinated in the dark. Gibberellic acid and calcium promoted germination of wet-stored spores indicating that some loss in viability that occurred during wet storage was reversible. Calmodulin antagonists inhibited germination at all concentrations but no differences between W-5 and W-7 were detected.
520 $a Ancillary studies included seasonal effects on spore viability, spore loss from buried samples, and estimates of spore weight.
590 $a School code: 0176.
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650 4 $a Agriculture, Forestry and Wildlife. $3 783690
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