Journal ArticleDOI
Temperature Effects on Early Season Cotton Growth and Development
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TLDR
Developmental rates, as depicted by number of mainstem nodes produced, number of fruiting branches, and fruiting branch nodes, were not as sensitive to temperatures above 30/22°C as were growth rates, and less time was required for this cultivar to produce squares at any temperature, suitable for growing cotton, than was suggested by previous experiments.Abstract:
Temperature is a primary environmental factor controlling growth and developmental rates of plants, yet little specific information is available regarding cotton (Gossypium hirsutum L.) responses to temperature. Information covering a wide range of temperatures would be useful for predicting both developmental and growth rates in cotton. Therefore, an experiment was conducted in naturally lit, temperature- and CO₂-controlled cabinets from soon after emergence until 56 d after emergence (DAE). The cabinets were maintained at 20/12, 25/17,30/22,35/27, and 40/32°C day/night cycles. Plant heights, number of nodes, and leaf areas were determined weekly throughout the experiment, and dry weight measurements were obtained at three intervals. Mainstem elongation, leaf area growth, and biomass accumulation rates were very sensitive to temperature about 3 wk after emergence. Prior to that time, they were relatively insensitive to temperature. The temperature optimum for stem elongation, leaf area expansion, and biomass accumulation was 30/22°C. Developmental rates, as depicted by number of mainstem nodes produced, number of fruiting branches, and fruiting branch nodes, were not as sensitive to temperatures above 30/22°C as were growth rates. Four times as many fruiting branches were produced at 30/22°C as at 20/12°C; whereas more vegetative branches were produced at low temperatures. All flower buds (squares) abscised from plants grown at 40/32°C. Essentially, all bolls and squares were retained at 30/22 °C while a 10% boll and square loss was observed at 35/27 °C during the early reproductive period. Less time was required for this cultivar to produce squares at any temperature, suitable for growing cotton, than was suggested by previous experiments. Contribution from Mississippi State Dep. of Agronomy as paper J7641, and the USDA-ARS Crop Simulation research Unit, Crop Sci. Res. Lab., Mississippi State, MS.read more
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Climate Change and Agriculture in the United States: Effects and Adaptation
Charles L. Walthall,Christoper J. Anderson,Lance H. Baumgard,Eugene S. Takle,Lois Wright-Morton +4 more
Book ChapterDOI
Influence of High Temperature and Breeding for Heat Tolerance in Cotton: A Review
TL;DR: In this paper, the effects of high temperature on the cotton plant as a whole, including important physiological, growth and yield processes, and fiber properties, are discussed in detail, and various new screening techniques based on physiological, ecophysiological, and morphological traits to identify tolerant germplasm are discussed.
Journal ArticleDOI
Reflectance indices with precision and accuracy in predicting cotton leaf nitrogen concentration
TL;DR: A set of calibration curves relating many 1.5-nm band reflectance ratios to cotton (Gossypium hirsutum L.) leaf N concentration was established from plants grown in sunlit growth chambers and at a range of nitrogen levels.
Journal ArticleDOI
Temperature Regime and Carbon Dioxide Enrichment Alter Cotton Boll Development and Fiber Properties
TL;DR: In this paper, the influence of temperature and atmospheric carbon dioxide concentration [CO{sub 2}] on cotton (Gossypium hirsutum L.) growth and development has not been studied.