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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.

Record Type:	Electronic resources : Monograph/item
Title/Author:	ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES./
Author:	STOCKTON, LEWIS AUSTIN, JR.
Description:	134 p.
Notes:	Source: Dissertation Abstracts International, Volume: 43-03, Section: B, page: 0576.
Contained By:	Dissertation Abstracts International43-03B.
Subject:	Agriculture, Plant Culture. -
Online resource:	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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035 $a AAI8219142
040 $a UnM $c UnM
100 1 $a STOCKTON, LEWIS AUSTIN, JR. $3 1907469
245 1 0 $a ENVIRONMENTAL FACTORS AFFECTING SPORE GERMINATION AND EARLY LIFE CYCLE STAGES OF SELECTED PLATYCERIUM DESV. SPECIES.
300 $a 134 p.
500 $a Source: Dissertation Abstracts International, Volume: 43-03, Section: B, page: 0576.
502 $a Thesis (Ph.D.)--Texas A&M University, 1982.
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.
590 $a School code: 0803.
650 4 $a Agriculture, Plant Culture. $3 1018669
690 $a 0479
710 2 0 $a Texas A&M University. $3 718977
773 0 $t Dissertation Abstracts International $g 43-03B.
790 $a 0803
791 $a Ph.D.
792 $a 1982
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8219142