The significance for development of water supply, osmotic relations and nutrition

Allsopp, A.

doi:10.1007/978-3-662-36273-0_19

Cited by 6 publications

(7 citation statements)

References 184 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They emphasize that a positive relationship exists between the amount of photosynthesizing leaf surface and the induction of fertility. Allsopp (1964Allsopp ( , 1965 has suggested that nutritional conditions, particularly the carbohydrate supply, appear to be of greater importance in pteridophytes in the induction of sporangia than photoperiodic or similar specific environmental stimuli. At a much earlier date, Goebel (1928) had found that the immature sporophylls of certain ferns (i.e., Onoclea sensibilis and Matteucia strzlthiopteris) would develop as photosynthetic fronds when the remaining sterile fronds were removed.…”

Section: Introductionmentioning

confidence: 99%

In vitro studies on the induction of sporogenous tissue on leaves of cinnamon fern. I. Environmental factors

Harvey¹,

Caponetti²

1972

Can. J. Bot.

View full text Add to dashboard Cite

Intact, set III, cinnamon fern cataphyll and frond primordia, which were shown to have no predisposition to fertility in situ, produced sporangia when excised and cultured under sterile conditions in Knudson's medium supplemented with various levels of sucrose and maintained on 11 different regimens of light, darkness, and temperature for 10 weeks. Increasing levels of sucrose resulted in increased fertility under all environmental conditions, but the highest percentage of fertility was obtained under conditions of continuous dark at 26 °C. As the length of the light phase of the photoperiods decreased, a progressive increase in induction of fertile leaves was observed, suggesting that periods of long light exposure are inhibitory to the initiation of sporangia. Conversely, as the light intensity was increased, an inhibition of sporophyll differentiation occurred. Sporangia excised from dark-induced sporophylls and cultured in the light produced viable spores which germinated yielding haploid gametophytes that ultimately produced sporophytes.

show abstract

Section: Introductionmentioning

confidence: 99%

In vitro studies on the induction of sporogenous tissue on leaves of cinnamon fern. I. Environmental factors

Harvey¹,

Caponetti²

1972

Can. J. Bot.

View full text Add to dashboard Cite

show abstract

“…The view stressed early in this century that substrates play an important regulatory role in plant growth anid development has recently re-attracted attention ( 1,2). In the case of floweringg it has been suggested that unspecific subs-tances such as sucrose miiglht play a central role (8).…”

mentioning

confidence: 99%

Inhibitory Effect of Carbohydrate on Flowering in Lemna perpusilla. I. Interaction of Sucrose With Calcium and Phosphate Ions

Posner¹

1969

Plant Physiol.

View full text Add to dashboard Cite

Abstract. Flowering in Lemna perpusilla 6746 grown on tenth-strength Hutner's medium under short days was inhibited 'by 30 mM sucrose, glucose or fructose, but not by mannitol. The inhibition by sucrose does not appear to be due to sucrose-induced acidifidation of the medium during growth, or to trace metal contaminants of the sugar. Inhibition wa-s partially prevented by raising either Ca2+ or phosphate to levels used in half-strength medium. Possible mechanisms for these effects are discussed.The view stressed early in this century that substrates play an important regulatory role in plant growth anid development has recently re-attracted attention ( 1, 2). In the case of floweringg it has been suggested that unspecific subs-tances such as sucrose miiglht play a central role (8 The results given below, from studies based on the first al)l)roach, indicate that inhibition of flowvering by sucrose is overcome bx increasinig the levels of eitlher Ca--or phosphate. Materials and MethodsVegetative stock cultures. started wvith two 3-frond colonies of Lemniiia perputsilla straiin 6746, were grown aseptically on about 50 ml of hallfstrengtlh Hutner's mediumil (10) IUniless otherwvise noted, sucrose-su,pplemented cuiltures were examiiined on day 6 and uinsupplemented culttures oIn day 8, at which times their frond numbers were about equal. Fronds were counted under 8X magnification and then dissected un,der 20X.Flowvering in,tensity whien expressed as Fl % wvas determiined as described elsewhere (6,15

show abstract

“…Jones (1955b) postulated that the turgor chanoges inl suLbmerged leaves might affect auxin production and translocation, aild thus indirectly affect leaf form. Allsopp (1965a) concluded that suoar coineentration is probably the effective factor in morphogenetic responses to hydration and osmotic change, suggesting that it serves as part of a trigger mechanism activating more fundamental developmental processes. White (1966) observed that in Marsilea the land form results when plants show SCHMIDT AND MILLINGTON: REGULATION OF LEAF SHAPE 285 stunted or slow growth, and concluded that changes in growth rate are of primary importance in the development of land and water forms.…”

mentioning

confidence: 99%

Regulation of Leaf Shape in Proserpinaca palustris

Schmidt¹,

Millington²

1968

Bulletin of the Torrey Botanical Club

View full text Add to dashboard Cite

The significance for development of water supply, osmotic relations and nutrition

Cited by 6 publications

References 184 publications

In vitro studies on the induction of sporogenous tissue on leaves of cinnamon fern. I. Environmental factors

In vitro studies on the induction of sporogenous tissue on leaves of cinnamon fern. I. Environmental factors

Inhibitory Effect of Carbohydrate on Flowering in Lemna perpusilla. I. Interaction of Sucrose With Calcium and Phosphate Ions

Regulation of Leaf Shape in Proserpinaca palustris

Contact Info

Product

Resources

About