Results 251 to 260 of about 1,296,059 (287)

Spring wheat leaf appearance and temperature: extending the paradigm? [PDF]

Annals of Botany, 2003
Extensive research shows temperature to be the primary environmental factor controlling the phyllochron, or rate of leaf appearance, of wheat (Triticum aestivum L.). Experimental results suggest that soil temperature at crown depth, rather than air temperature above the canopy, would better predict wheat leaf appearance rates.
John R Porter, Gregory S McMaster, P D Jamieson   +2 more
exaly   +5 more sources

Modeling the date of leaf appearance in low-arctic tundra

Global Change Biology, 2007
AbstractOne of the reported changes of arctic ecosystems in response to warming climate is the advance of the leaf appearance in spring. Such phenological changes play a role in the structural changes within tundra ecosystem communities. Recently, we developed a model that estimates the leaf appearance date for deciduous trees in taiga.
Nicolas Delbart, Ghislain Picard
exaly   +5 more sources

The Effect of Temperature on Leaf Appearance in Rice [PDF]

Annals of Botany, 1996
Temperature is the principal environmental determinant of crop leaf appearance. The objective of this study is to analyse whether there are different effects of day temperature (TD) and night temperature (TN) on main-stem leaf appearance in rice (Oryza sativaL.).
Xinyou Yin, Martinus Kropff
exaly   +3 more sources

Some of the next articles are maybe not open access.

Related searches:

Quantitative analysis of maize leaf collar appearance rates

Plant Physiology and Biochemistry, 2023
Phyllochron, the reciprocal of the leaf appearance rate, is a critical genetic parameter in crop models for predicting growth characteristics and yield. Previous studies have shown that existing observations and predictive algorithms do not adequately represent a broad range of cultivars and environments.
Honggen Xu, Bo Ming, Keru Wang, Jun Xue, Peng Hou, Shaokun Li, Ruizhi Xie   +6 more
openaire   +2 more sources

Prediction of leaf appearance in wheat: a question of temperature

Field Crops Research, 1995
Abstract The rate of leaf appearance in wheat depends on temperature. When the rate is expressed in thermal time based on air temperature, a marked contrast is apparent between autumn and spring sowings. This variation has often been attributed to a preconditioning response that determines the thermal phyllochron at about the time of emergence ...
D R Wilson, J R Porter, P D Jamieson
exaly   +2 more sources

Comparison of models to simulate leaf appearance in wheat

European Journal of Agronomy, 1995
Prediction on of leaf appearance in cereals is important for modelling canopy development and timing crop management practices. Four models which aim to predict leaf emergence on the basis of temperature and, in three cases, photoperiod are compared against independent data from a wide range of sites, sowing dates and cultivars of spring and winter ...
Marco Bindi, Franco Miglietta, J R Porter   +2 more
exaly   +3 more sources

Rate of Leaf Appearance in Crimson Clover

Crop Science, 2002
Understanding factors that affect growth and development of crimson clover ( Trifolium incarnatum L.) are important for the development of management practices to optimize forage utilization. In a 3‐yr field experiment at College Station, TX, we evaluated the effects of planting date on rate ...
Twain J., Butler, Gerald W., Evers, Mark A., Hussey, Larry J., Ringer   +3 more
openaire   +2 more sources

Simulating Leaf Appearance in Rice

Agronomy Journal, 2008
Most rice (Oryza sativa L.) simulation models assume that only temperature affects leaf appearance rate (LAR). This assumption ignores results from controlled environment studies that show that LAR in rice is not constant with time (calendar days) under constant temperature.
Nereu Augusto Streck, Leosane Cristina Bosco, Isabel Lago   +2 more
openaire   +1 more source

Floral initiation, leaf initiation and leaf appearance in sunflower

Field Crops Research, 1993
Abstract This paper examines the hypothesis that leaf number visible at floral initiation (LN n ) and final leaf number (FLN) are correlated in sunflower ( Helianthus annuus L.). The relationship between these variables is described by a model that takes into account the rate of leaf primordium initiation (RPI), the rate of leaf appearance (RLA) and
V.O. Sadras, F.J. Villalobos
openaire   +1 more source