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Importance of the Phyllochron in Studying Development and Growth in Grasses
Crop Science, 1995The phyllochron, which is defined as the interval between similar growth stages of successive leaves on the same calm, has been used extensively to describe and understand development of grasses. The purpose of this paper is to introduce seven papers presented as part of the symposium Understanding Development and Growth in Grasses: Role of the ...
W. W. Wilhelm, Gregory S. McMaster
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Winter Rye Leaf Emergence and its Relationship to the Phyllochron
Crop Science, 1997Winter rye (Secale cereale L.) is a high‐tillering cereal crop. Understanding the relationship between the phyllochron for mainstem leaves and that of tillers is useful in adequately describing plant development and selecting crop management strategies. This study was conducted to determine the phyllochrons of conventional height (CH) and semidwarf (SD)
Y. Gan, J. G. McLeod
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Daylength Effect on Leaf Emergence and Phyllochron in Wheat and Barley
Crop Science, 1989An understanding of the effect of environment on leaf emergence and development is necessary in order to model crop growth and development. This study was designed to determine the effect of controlled daylength on leaf emergence rate and phyllochron in winter wheat (Triticum aestivum L.) and spring barley (Hordeum vulgare L.).
Weixing Cao, Dale N. Moss
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Phyllochron in Wheat as Affected by Photoperiod Under Two Temperature Regimes
Australian Journal of Plant Physiology, 1997In this paper we describe the effects of photoperiod (9, 12, 15, 17, 19 and 21 h) and temperature (21/17 and 16/12°C) on rate of leaf appearance and phyllochron in two spring wheats, a semi-winter wheat, and a winter wheat. Under long photoperiods only, all leaves on the main culm of a cultivar emerged at a common rate within a temperature regime, so ...
Gustavo A. Slafer, H. M. Rawson
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Temperature Effect on Leaf Emergence and Phyllochron in Wheat and Barley
Crop Science, 1989An understanding of the effect of environment on leaf emergence is necessary for modeling crop canopy growth. This study was to determine the effect of controlled temperature on leaf emergence rate and phyllochron in four winter wheat (Triticum aestivum L.) and four spring barley (Hordeum vulgare L.) genotypes. Nine experiments were conducted in growth
Weixing Cao, Dale N. Moss
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Elongation of the Grass Leaf and its Relationship to the Phyllochron
Crop Science, 1995The phyllochron (interval between appearance of successive leaves) in grasses is determined by timing of leaf initiation at the stem apex and duration of leaf tip elongation through the whorl of mature sheaths. Primordia in tall fescue (Festuca arundinacea Schreber) are initiated and enlarge to ⊄ 1.5 nun in length by production of cells that remain ...
R. H. Skinner, C. J. Nelson
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The vexatious problem of the variation of the phyllochron in wheat
Field Crops Research, 2008Abstract Measurements of the thermal phyllochron in wheat using air temperature show a systematic variation with sowing date, with long phyllochrons for crops sown in autumn and winter, but shorter phyllochrons for sowings outside that range. Based on the hypothesis that the phyllochron is constant, two sources of error for the apparent variation in ...
Peter Jamieson +3 more
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Phyllochron Change in Winter Wheat with Planting Date and Environmental Changes
Agronomy Journal, 1991AbstractThe phyllochron (degree‐days/leaf) of wheat (Triticum aestivum L.) differs with planting dates and latitudes. An understanding of the causes for these differences is needed to model the development of wheat crop canopies. Stephens and Yamhill winter wheat cultivars were planted on a range of dates in outdoor pots and in field plantings to study
Weixing Cao, Dale N. Moss
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Maize phyllochron : genotypic and environmental controls
2019An original plant material resulting from two Divergent Selection Experiments (DSEs) for flowering time of maize was developped over the last 20 years. Within two maize inbred lines, Early- and Late-flowering populations, subsequently structured into families within populations were formed.
Plancade, Sandra +4 more
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Leaf Appearance Base Temperature and Phyllochron for Common Grass and Broadleaf Weed Species
Weed Technology, 2007Base temperature (Tb) for leaf appearance and the thermal time interval between appearance of successive leaves (phyllochron) were determined for six common weed species from a series of growth chamber experiments. Mean leaf appearance Tbvalues for giant ragweed, velvetleaf, redroot pigweed, large crabgrass, woolly cupgrass, and wild-proso millet were ...
Greta G. Gramig, David E. Stoltenberg
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