Results 211 to 220 of about 215,417 (247)

Leaf longevity in temperate evergreen species is related to phylogeny and leaf size

Oecologia, 2019
Leaf longevity (LL), the amount of time a photosynthetically active leaf remains on a plant, is an important trait of evergreen species, affecting physiological ecology and ecosystem processes. A long LL gives leaves more time to fix carbon but carries higher construction costs, while a short LL allows plants to respond more rapidly to changing ...
Linnea, Smith, Richard B, Primack, Lucy, Zipf, Sarah, Pardo, Amanda S, Gallinat, Zoe A, Panchen   +5 more
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Is Leaf Size Important for a Leaf-Galling Sawfly (Hymenoptera: Tenthredinidae)?

Environmental Entomology, 1993
We evaluated the importance of leaf size in determining oviposition choice (i.e., gall densities), gall (and larval) size, and larval survivorship for a population of leaf-galling sawflies, Pontania sp. nr. pacifica Marlatt, on arroyo willow, Salix lasiolepis Bentham. Our results did not support the hypothesis that female sawflies prefer to oviposit in
Karen M. Clancy, Peter W. Price, Christopher F. Sacchi   +2 more
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Leaf size and leaf consistence of a riverine forest formation along a climatic gradient

Oecologia, 1978
The riverine forest formation on the levees along the Orange River in South Africa shows a shift in floristic composition as the river traverses various climatic zones on its course through the temperate area in the eastern parts of the subcontinent, the central semi-desert region, and the desert area near the Atlantic in the west.
M J A, Werger, G A, Ellenbroek
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The determination of leaf size on the basis of developmental traits

New Phytologist
Summary Mature leaf area (LA) is a showcase of diversity – varying enormously within and across species, and associated with the productivity and distribution of plants and ecosystems. Yet, it remains unclear how developmental processes determine variation in LA.
Zeqing Ma, Thomas N. Buckley, Lawren Sack   +2 more
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RFLP tagging of QTLs conditioning specific leaf weight and leaf size in soybean

Theoretical and Applied Genetics, 1998
Selection for high specific leaf weight (SLW) in soybean [Glycine max (L) Merr.] may increase apparent photosynthetic rate per unit leaf area (AP), which in turn may improve seed yield. In general, the SLW and leaf size are negatively correlated in soybean. To maximize total photosynthetic performance, and perhaps the seed yield, of a soybean cultivar,
M A, Mian, R, Wells, T E, Carter, D A, Ashley, H R, Boerma   +4 more
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A Leaf-Size Hierarchy of Alternating Rebound Turing Machines

J. Autom. Lang. Comb., 2002
This paper continues the investigation of the fundamental properties of alternating rebound Turing machines (ARTMs). In particular, we shall introduce a simple, natural complexity measure for ARTMs, called "leaf-size", and provide a hierarchy of complexity classes based on leaf-size bounded computations.
Lan Zhang, Katsushi Inoue, Akira Ito 0001, Yue Wang 0002   +3 more
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Herbivory and the evolution of leaf size and shape

Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1991
Abstract Why do leaves have such varied sizes and shapes? Part of the answer lies in physiological and biomechanical demands imposed by different habitats; selective forces that are now reasonably well understood. In contrast, the im pact of herbivores on the evolution of leaf size and shape has rarely been investigated and is poorly ...
V. K. Brown, John Hartley Lawton
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The Control of Leaf and Ear Size in Barley

Journal of Experimental Botany, 1973
The relative growth rates, growth rates, and final size of tillers and main-shoot leaves, inter nodes, and ear of a freely tillering spring barley genotype were measured and compared with those of a non-tillering single-gene mutant. Leaf and internode growth and final size were greater in the non-tillering mutant. The differences, it is proposed, arise
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Leaf size, climate, and energy balance

Science, 2017
Plant Ecology Why does plant leaf size increase at lower latitudes, as exemplified by the evolutionary success of species with very large leaves in the tropics? Wright et al. analyzed leaf data for 7670 plant species, along with climatic data, from 682 sites worldwide.
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Leaf Size and Leaf Temperature in Tropical Vines

The American Naturalist, 1981
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