Floral infrared emissivity estimates using simple tools

Harrap, Michael J. M.; Rands, Sean A.

doi:10.1186/s13007-021-00721-w

Plant Methods

Table 4 The summary of the difference between thermographic floral temperature measurements taken using an emissivity value of 0.98 (T_0.98) and the corresponding object temperature measurement made during emissivity estimation (T_obj)

From: Floral infrared emissivity estimates using simple tools

Species	Thermocouple Protocol			Water bath protocol
Species	Repro struc	Petal base	Petal edge	Repro struc	Petal base	Petal edge
Bellis perennis	− 0.37 ± 0.14	− 0.79 ± 0.13	− 0.39 ± 0.19	0.85 ± 0.22₃₅	− 0.31 ± 0.08₃₅	− 0.15 ± 0.13₃₅
Bellis perennis	− 0.37 ± 0.14	− 0.79 ± 0.13	− 0.39 ± 0.19	1.74 ± 0.42₄₅	− 0.50 ± 0.26₄₅	− 0.39 ± 0.21₄₅
Campanula sp.	− 0.24 ± 0.21	− 0.58 ± 0.19	− 0.81 ± 0.13	− 0.79 ± 0.10₃₅	− 0.35 ± 0.09₃₅	− 0.20 ± 0.08₃₅
Campanula sp.	− 0.24 ± 0.21	− 0.58 ± 0.19	− 0.81 ± 0.13	− 1.35 ± 0.17₄₅	− 0.63 ± 0.14₄₅	− 0.43 ± 0.09₄₅
Cistus ‘Snow Fire’	− 0.02 ± 0.15	− 0.84 ± 0.09	− 0.92 ± 0.13
Coreopsis verticillata	− 0.92 ± 0.18	− 1.05 ± 0.12	− 1.21 ± 0.11
Eschscholzia californica				3.75 ± 0.40₃₅	− 0.77 ± 0.12₃₅	− 0.63 ± 0.08₃₅
Eschscholzia californica				7.28 ± 0.67₄₅	− 1.38 ± 0.17₄₅	− 1.37 ± 0.09₄₅
Geranium pratense	− 0.50 ± 0.13	− 0.42 ± 0.12	− 0.95 ± 0.12
Geranium psilostemon	0.16 ± 0.15	− 0.49 ± 0.11	− 0.84 ± 0.12
Helianthemum sp.	− 0.34 ± 0.10	− 1.15 ± 0.14	− 1.06 ± 0.14
Leucanthemum vulgare	− 0.89 ± 0.16	− 0.90 ± 0.22	− 1.06 ± 0.12	0.98 ± 0.16₃₅	− 0.45 ± 0.09₃₅	− 0.38 ± 0.09₃₅
Leucanthemum vulgare	− 0.89 ± 0.16	− 0.90 ± 0.22	− 1.06 ± 0.12	3.25 ± 0.28₄₅	− 0.58 ± 0.10₄₅	− 0.61 ± 0.10₄₅
Papaver cambricum	− 0.02 ± 0.09	− 1.11 ± 0.16	− 0.85 ± 0.11
Potentilla fruticosa				0.82 ± 0.11₃₅	− 0.49 ± 0.07₃₅	− 0.54 ± 0.05₃₅
Potentilla fruticosa				2.63 ± 0.45₄₅	− 0.65 ± 0.12₄₅	− 0.70 ± 0.09₄₅
Taraxacum agg.	− 0.16 ± 0.15	− 0.58 ± 0.32	− 0.53 ± 0.16	0.32 ± 0.19₃₅	0.97 ± 0.35₃₅	− 0.11 ± 0.11₃₅
Taraxacum agg.	− 0.16 ± 0.15	− 0.58 ± 0.32	− 0.53 ± 0.16	1.05 ± 0.41₄₅	1.13 ± 0.61₄₅	− 0.79 ± 0.15₄₅
Average	− 0.33 ± 0.05	− 0.79 ± 0.06	− 0.87 ± 0.04	0.99 ± 0.18₃₅	− 0.23 ± 0.09₃₅	− 0.33 ± 0.04₃₅
Average	− 0.33 ± 0.05	− 0.79 ± 0.06	− 0.87 ± 0.04	2.43 ± 0.35₄₅	− 0.44 ± 0.15₄₅	− 0.72 ± 0.06₄₅

Provided are the mean ± SEM differences between these two temperature measurements (T_obj − T_0.98) in degrees Celsius/Kelvin for each measurement location on each species (as well as the average for all species) across both measurement protocols. ‘Repro struc’ indicating reproductive structures. For the water bath protocol mean differences are provided for both set temperatures of the water bath (35 and 45 °C), these are indicated by subscript values following mean ± SEM values

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ISSN: 1746-4811

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