2021
DOI: 10.1016/j.indcrop.2021.114025
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Extreme temperatures affect seedling growth and photosynthetic performance of advanced cotton genotypes

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Cited by 27 publications
(15 citation statements)
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“…The cotton plant requires approximately 50 DD60s from planting to emergence and another 50 after emergence to produce its first true leaf. Current University of Georgia recommendations for planting cotton include a soil temperature of 65 °F and 50 DD60s forecasted to accumulate within the first five days after planting (Hand et al, 2021) It should be understood, however that even though cotton is widely regarded as a heat-tolerant plant, there is a point above which higher temperatures will not necessarily increase growth and can even decrease growth due to negative impacts on final leaf area and photosynthetic efficiency (Virk et al, 2021b). Figure 4 shows the results of a recently conducted experiment at the University of Georgia.…”
Section: Temperaturementioning
confidence: 99%
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“…The cotton plant requires approximately 50 DD60s from planting to emergence and another 50 after emergence to produce its first true leaf. Current University of Georgia recommendations for planting cotton include a soil temperature of 65 °F and 50 DD60s forecasted to accumulate within the first five days after planting (Hand et al, 2021) It should be understood, however that even though cotton is widely regarded as a heat-tolerant plant, there is a point above which higher temperatures will not necessarily increase growth and can even decrease growth due to negative impacts on final leaf area and photosynthetic efficiency (Virk et al, 2021b). Figure 4 shows the results of a recently conducted experiment at the University of Georgia.…”
Section: Temperaturementioning
confidence: 99%
“…Multiple experiments conducted in controlled‐environment facilities at the University of Georgia have documented the negative impacts of suboptimal temperature on seedling growth. When a suboptimal growth temperature regime (68/59 °F) was compared with an optimal day/night growth temperature regime (86/68 °F), reductions in shoot growth ranged from 33 to 70%, depending on which growth parameter was being evaluated (Snider et al., 2018; Virk et al., 2021b). Root growth is also negatively impacted by low temperature as can be seen in Figure 3.…”
Section: Figurementioning
confidence: 99%
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“…This process is irreversible, but when exposed to high temperature, it undergoes a series of physiological and biochemical reactions, which ultimately lead to slow growth and even the arrest of growth until death. Previous research revealed that the plant height of cotton increased linearly with increasing temperature ( Reddy et al., 2017 ) and that the leaf area index and the dry matter accumulation of the aboveground parts peaked at 35°C but began to decrease after 35°C ( Virk et al., 2021 ). This study found that a high temperature of 38°C significantly reduced the plant height, stem diameter, leaf area, and SPAD of ND and GX ( Figure 2 ).…”
Section: Discussionmentioning
confidence: 99%
“…Seedling vigor is typically estimated using some measure of seedling size or growth rates (Bourland, 2019; impacts of suboptimal temperature on seedling growth. When a suboptimal growth temperature regime (68/59 °F) was compared with an optimal day/ night growth temperature regime (86/68 °F), reductions in shoot growth ranged from 33 to 70%, depending on which growth parameter was being evaluated (Snider et al, 2018;Virk et al, 2021b). Root growth is also negatively impacted by low temperature as can be seen in Figure 3.…”
Section: The Seedmentioning
confidence: 99%