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ENVIRONMENTAL FACTORS AFFECTING SPOR...

STOCKTON, LEWIS AUSTIN, JR.

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ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES./
作者:	STOCKTON, LEWIS AUSTIN, JR.
面頁冊數:	134 p.
附註:	Source: Dissertation Abstracts International, Volume: 43-03, Section: B, page: 0576.
Contained By:	Dissertation Abstracts International43-03B.
標題:	Agriculture, Plant Culture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8219142

ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES.
STOCKTON, LEWIS AUSTIN, JR.

ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES. - 134 p.

Source: Dissertation Abstracts International, Volume: 43-03, Section: B, page: 0576.

Thesis (Ph.D.)--Texas A&M University, 1982.

Platycerium coronarium and P. superbum spores responded to 26(DEGREES)C on a thermogradient with greatest germination percentages. The same temperature was also optimum for gametophytic surface area increase and juvenile sporophyte growth.Subjects--Topical Terms:

1018669
Agriculture, Plant Culture.

ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES.
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520 $a Platycerium coronarium and P. superbum spores responded to 26(DEGREES)C on a thermogradient with greatest germination percentages. The same temperature was also optimum for gametophytic surface area increase and juvenile sporophyte growth.
520 $a Spores of P. coronarium germinated optimally in the range of 18 - 100 (mu)Em('-2)sec('-1) while P. superbum spores germinated with greatest percentages at 18 - 25 (mu)Em('-2)sec('-1). Immature gametophytes of both species exhibited the greatest growth at irradiances of 18 - 25 (mu)Em('-2)sec('-1). The light compensation point for mature P. coronarium gametophytes was near 9 (mu)Em('-2)sec('-1) and photosynthesis saturated near 80 (mu)Em('-2)sec('-1). Juvenile P. coronarium fresh weight did not differ significantly when grown under a light gradient of 18 - 190 (mu)Em('-2)sec('-1) but chlorophyll a and b content decreased linearly as irradiance increased.
520 $a Platycerium superbum gametophytes exhibited greatest surface area increase at pH 7 while P. coronarium gametophyte growth was not substrate pH sensitive. Amending a peat-vermiculite mix with 950 ppm hydrogel and 25 ppm vitamin B(,1) significantly increased P. Hilli 'Drummond' sporophyte production under diurnal temperature fluctuations.
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