High-Temperature Tolerance of Flowers

Hegde, Satisha; Umekawa, Yui; Watanabe, Etsuko; Kasajima, Ichiro

doi:10.1007/978-981-15-2156-0_12

Cited by 4 publications

(1 citation statement)

References 84 publications

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“…Hedge et al [14] revealed that flowering of longday spring flowers such as Arabidopsis is increased under high temperature conditions. Conversely, the induction of short-day autumn flowers like chrysanthemum is decreased when exposed to high temperatures.…”

Section: Stressmentioning

confidence: 99%

Flower Forcing: A Review

Hasna,

Rafeekher,

Priyakumari

et al. 2024

Int. J. Plant Soil Sci.

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In the modern floricultural industry, scheduling plant production is essential due to fluctuating market demands. Flower forcing, which stimulates flowering at specific dates or during off-season periods, is a key technique employed. The manipulated flowering dates resulting from flower forcing may deviate from the plant's natural schedule, occurring either earlier or later than the standard flowering dates. This can be achieved by adjusting factors affecting flowering such as temperature, photoperiod, and irradiance etc. Implementation of special practices like pruning, leaf trimming, dormancy breaking helps in forcing operation in certain plants. Utilization of chemicals such as plant hormones like gibberellin and ethylene, growth retardants and some fertilizers also play an important role in forcing. Employing mechanical methods can be considered as a sustainable and environment friendly practice. Advancements in plant physiology, photomorphogenesis, metabolism, and greenhouse technologies have led to the development of multiple strategies to finely regulate the rate of plant growth and development across various crops.

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Section: Stressmentioning

confidence: 99%

Flower Forcing: A Review

Hasna,

Rafeekher,

Priyakumari

et al. 2024

Int. J. Plant Soil Sci.

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Identifying Suitable Sites for Alternative Agriculture in Drought-Prone Akarsa Watershed, West Bengal

Senapati,

Raha,

Das

et al. 2023

Climate Change, Agriculture and Society

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Floral infrared emissivity estimates using simple tools

Harrap

Rands

2021

Plant Methods

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Background Floral temperature has important consequences for plant biology, and accurate temperature measurements are therefore important to plant research. Thermography, also referred to as thermal imaging, is beginning to be used more frequently to measure and visualize floral temperature. Accurate thermographic measurements require information about the object’s emissivity (its capacity to emit thermal radiation with temperature), to obtain accurate temperature readings. However, there are currently no published estimates of floral emissivity available. This is most likely to be due to flowers being unsuitable for the most common protocols for emissivity estimation. Instead, researchers have used emissivity estimates collected on vegetative plant tissue when conducting floral thermography, assuming these tissues to have the same emissivity. As floral tissue differs from vegetative tissue, it is unclear how appropriate and accurate these vegetative tissue emissivity estimates are when they are applied to floral tissue. Results We collect floral emissivity estimates using two protocols, using a thermocouple and a water bath, providing a guide for making estimates of floral emissivity that can be carried out without needing specialist equipment (apart from the thermal camera). Both protocols involve measuring the thermal infrared radiation from flowers of a known temperature, providing the required information for emissivity estimation. Floral temperature is known within these protocols using either a thermocouple, or by heating the flowers within a water bath. Emissivity estimates indicate floral emissivity is high, near 1, at least across petals. While the two protocols generally indicated the same trends, the water bath protocol gave more realistic and less variable estimates. While some variation with flower species and location on the flower is observed in emissivity estimates, these are generally small or can be explained as resulting from artefacts of these protocols, relating to thermocouple or water surface contact quality. Conclusions Floral emissivity appears to be high, and seems quite consistent across most flowers and between species, at least across petals. A value near 1, for example 0.98, is recommended for accurate thermographic measurements of floral temperature. This suggests that the similarly high values based on vegetation emissivity estimates used by previous researchers were appropriate.

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High-Temperature Tolerance of Flowers

Cited by 4 publications

References 84 publications

Flower Forcing: A Review

Flower Forcing: A Review

Identifying Suitable Sites for Alternative Agriculture in Drought-Prone Akarsa Watershed, West Bengal

Floral infrared emissivity estimates using simple tools

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