An Introduction to Plant Physiology

Curits, Otis F.; Clark, Daniel G.

doi:10.1097/00010694-195101000-00013

Cited by 11 publications

(2 citation statements)

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“…Specific questions, pertinent at the time (1950s), concerned the link between leaf size and transpiration: are smaller leaves favoured in water conservation because cooling is more effective, lowering surface temperature and vapour pressure, or at a disadvantage because of the increased transfer efficiency conferred by a thinner BL ? Answers were considered to be 'practically impossible' (Curtiss & Clark, 1950) because of the variability in radiation, air temperature and wind. Raschke addressed such questions on the basis of a physical 'leaf with reactionless (but adjustable) stomatal exchange.…”

Section: Early Studiesmentioning

confidence: 99%

Tansley Review No. 59 Leaf boundary layers

1993

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Studies of heat and mass exchange between leaves and their local environment are central to our understanding of plant‐atmosphere interactions. The transfer across aerodynamic leaf boundary layers is generally described by non‐dimensional expressions which reflect largely empirical adaptations of engineering models derived for flat plates. This paper reviews studies on leaves, and leaf models with varying degrees of abstraction, in free and forced convection. It discusses implecations of finding for leaf morphology as it affects – and is affected by – the local microclimate. Predictions of transfer from many leaves in plant communities are complicated by physical and physiological feedback mechanisms between leaves and their environment. Some common approaches, and the current challenge of integrating leaf‐atmosphere interactions into models of global relevance, are also briefly addressed.

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Section: Early Studiesmentioning

confidence: 99%

Tansley Review No. 59 Leaf boundary layers

1993

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“…In environmental chamber Exp 1 and 2, leaves produced at 24-18°C were observed to be darker green, larger, and more obovate than leaves produced at 35-29°C (Fig 1). At higher temp 35-29°C chlorosis was observed and thermal destruction, solarization, and reduced chlorophyll synthesis may have occurred (2).…”

Section: Resultsmentioning

confidence: 99%

Influence of Photoperiod, Temperature, and Node Position on Vegetative Shoot Growth of Greenhouse Azaleas, Rhododendron cv.1

Barrick

Sanderson

1973

J. Amer. Soc. Hort. Sci.

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An increase in shoot length and shoot dry weight and a decrease in number of shoots per lateral branch, with no effect on number of leaves per shoot, was observed on sheared azaleas grown under increased daylengths in environmental chambers or greenhouses. Plants grown at low (24-19°C) temperatures in environmental chambers had greater shoot lengths, higher numbers of shoots, more leaves per shoot, and decreased shoot dry weight. Decreases in shoot length, number of shoots, number of leaves per shoot, and shoot dry weight occurred as node position for shearing increased (counting from the shearing point). Thus, an inverse relationship apparently exists between node position for shearing and shoot growth in greenhouse azaleas.

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Relationships between the dynamics of the durum wheat water content and its phasic development in a Mediterranean climate, for remote sensing purposes

2003

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International audienceThe temporal evolution of the water content of durum wheat (Triticum durum L.) canopies was investigated. The water contents of leaves, stems and ears of durum wheat plants were measured on various cultivars, under various hydric treatments and for several years in the Southeast of France. Because of the variability observed between these classes of organs, the water content is expressed as the percentage of the fresh weight for each class, from which the total water content of the canopy is deduced. The water content of the organs is then modelled as a function of a decimal phenological scale, defined as the cumulative degree-days canopy temperature accumulated between key phenological stages. The phenological stage emerges as the main variable governing the time course of the relative water content. The simulated values are in good agreement with the measurements and the uncertainties of the model are comparable with experimental ones.Mise en relation de l'évolution du contenu en eau du blé dur avec son développement phénologique en climat méditerranéen, pour application à la télédétection. On étudie l'évolution temporelle du contenu en eau de couverts de blé dur (Triticum durum L.). Les contenus en eau des organes (feuilles, tiges et épis) ont été mesurés au cours de plusieurs expérimentations comprenant plusieurs variétés, plusieurs traitements hydriques et plusieurs années, dans le sud-est de la France. Du fait de la grande variabilité observée entre ces organes, on exprime le contenu en eau du blé en termes de fraction de leur poids frais, dont on peut déduire le contenu en eau total de la végétation. On modélise l'évolution du contenu en eau des organes en fonction d'une échelle phénologique relative, définie par les sommes de degrés-jours de température du couvert, accumulées entre des stades clefs du développement du blé. Dans ces conditions expérimentales, l'échelle phénologique relative explique l'essentiel de l'évolution du contenu en eau des couverts de blé. Les valeurs simulées sont en bon accord avec les mesures et les incertitudes du modèle sont du même ordre de grandeur que les erreurs expérimentales

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An Introduction to Plant Physiology

Cited by 11 publications

References 0 publications

Tansley Review No. 59 Leaf boundary layers

Tansley Review No. 59 Leaf boundary layers

Influence of Photoperiod, Temperature, and Node Position on Vegetative Shoot Growth of Greenhouse Azaleas, Rhododendron cv.1

Relationships between the dynamics of the durum wheat water content and its phasic development in a Mediterranean climate, for remote sensing purposes

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