Results 231 to 240 of about 52,458 (254)

Effects of photoperiod on leaf appearance rate and leaf dimensions in winter and spring wheats

Canadian Journal of Plant Science, 1996
Research on genotypic variation in the response of leaf-area production and expansion to photoperiod in wheat is limited. Growth-cabinet experiments using four spring and four winter wheat (Triticum aestivum L.) cultivars and four photoperiod (8, 12, 16 and 20 h) treatments were thus conducted with the objective of investigating the effect of ...
S. Pararajasingham, L. A. Hunt
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Humidity does not appear to trigger leaf out in woody plants

International Journal of Biometeorology, 2017
In order to anticipate the ecological impacts of climate change and model changes to forests, it is important to understand the factors controlling spring leaf out. Leaf out phenology in woody trees and shrubs is generally considered to be strongly controlled by a combination of spring warming, winter chilling requirement, and photoperiod.
Lucy Zipf, Richard B. Primack
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Leaf appearance and senescence patterns of some pasture species

Grass and Forage Science, 1995
AbstractFive pasture species, very different in their morphological organization (four dicotyledons: Plantago lanceolata, Sanguisorba minor, Ranunculus repens, Taraxacum officinalis and one grass: Dactylis glomerata), were grown as spaced plants in pots, thus excluding competition for light, to study the proportion of senescent leaves.
Calvière, I., Duru, Michel
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Towards a Robust Method of Modelling Leaf Appearance in Plants [PDF]

, 1998
The thermal interval for leaf tip appearance (phyllochron) is a critical variable for modelling plant development and growth. Phyllochron varies across environments, but is generally constant for a species grown in specific environments. For example, the phyllochron in maize is lower in temperate environments than in tropical and subtropical ...
Birch, C., Vos, J., Kiniry, J.R.
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The Impact of Temperature on Leaf Appearance in Bambara Groundnut Landraces

Crop Science, 2003
Ten bambara groundnut [Vigna subterranea (L.) Verdc] landraces of diverse origin were used to examine the effect of temperature on the rate of leaf appearance (RLA) and to determine the base temperature (Tb) among landraces. Knowledge of leaf development is required in breeding programs where crop morphological development is considered an important ...
Festo J. Massawe, Sayed N. Azam‐Ali, Jeremy A. Roberts   +2 more
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Contribution of Leaf Expansion, Rate of Leaf Appearance, and Stolon Branching to Growth of Plant Leaf Area under Water Deficit in White Clover

Crop Science, 1996
Response of white clover (Trifolium repens L.) leaf area to water deficit depends on three processes: individual leaf expansion, phytomer production, and stolon branching. We have evaluated these processes in five clones under a wide range of conditions.
Belaygue, C., Wery, J., Cowan, A.A., Tardieu, Francois   +3 more
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Effect of Temperature on Time to Panicle Initiation and Leaf Appearance in Sorghum

Crop Science, 1998
Leaf‐tip appearance and duration from planting to panicle initiation (PI) are important developmental processes in cereals. This study was conducted to determine the effect of air temperature on rates of leaf‐tip appearance and 1/PI for sorghum [Sorghum bicolor (L.) Moench].
Peter Q. Craufurd, Aiming Qi, Richard H. Ellis, Rodney J. Summerfield, Eric H. Roberts, Vishwanathan Mahalakshmi   +5 more
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Temperature response function for leaf appearance rate in wheat and corn

Canadian Journal of Plant Science, 1999
The ability to predict leaf appearance would enhance our capability of modeling plant development and the rate of leaf area expansion. Many crop models use the constant thermal time for successive leaf tip appearance (which is often termed a phyllochron) as one model parameter to predict total number of leaves and date of anthesis.
Y. W. Jame, H. W. Cutforth, J. T. Ritchie   +2 more
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Leaf appearance, tillering and their coordination in response to NxP fertilization in barley

Plant and Soil, 2003
The aim of this work was to study the effects of nitrogen (N) and phosphorus (P) deficiencies and their interaction on the appearance of leaves and tillers of barley (Hordeum vulgare spp. distichum L.) by analyzing the rate and duration of the appearance period.
Pablo Prystupa, Gustavo A. Slafer, Roxana Savin   +2 more
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Appearance of a new leaf rot disease on common ice plant

Journal of General Plant Pathology, 2010
An unknown disease abruptly appeared on hydroponic cultures of common ice plant (Mesembryanthemum crystallinum) in the greenhouse, causing catastrophic damage. Although the symptoms of the plant were unlike typical Botrytis lesions on leaves and stems of other plants, fungi isolated from the necrotic lesions on the plant were similar to genus Botrytis ...
Kazuyuki Maeda, Yoshio Kurahashi, Shuichi Ohsato, Katsuyoshi Yoneyama   +3 more
openaire   +1 more source