DOI: 10.5061/dryad.15dv41p54
title: Floral temperatures and seed production in Brandisia hancei

description: We studied the functional advantages of persistent calyx and labiate
 corolla in Brandisia hancei, a typical winter-flowering shrub. The calyx
 and corolla function as a tiny greenhouse, and thus the floral temperature
 can be up to 10℃ higher than the ambient temperature. However, temperature
 excess disappeared after shading. The manipulation on perianth generally
 resulted in lower floral temperatures and lower seed production, while
 both temperature and seed production regained after repairing the corolla.
description: All temperatures were measured with multichannel thermocouple
 thermometers. When floral temperature was measured, the probe was inserted
 into the bottom of the flower. The probe for measuring ambient temperature
 was placed behind an adjacent leaf to avoid rain or sunlight. Fruits were
 collected at the beginning of April, after which the seeds were
 counted.
description: This dataset includes 11 files, files 1-9 are about temperature, and files
 10-11 are about seed production. File 1 describes daily dynamics of floral
 temperatures on a rainy day, 17th December 2023. One flower at the Opening
 stage and another adjacent flower at the Opened stage were selected to
 measure the floral temperatures, and the nearby ambient temperature
 simultaneously at 6-min intervals for 24 hours. File 2 is about daily
 temperature dynamics at an interval of 6 minutes, on a cloudy day, 31st
 January 2024. The floral temperatures of two flowers at stages of Opening
 and Opened, and the nearby ambient temperature were simultaneously
 measured. File 3 describes floral and ambient temperatures under sunny and
 shaded conditions. For each condition, floral and nearby ambient
 temperatures for an opened flowers were measured simultaneously at 1-min
 intervals for 30 min (15:31-16:00) on 27th December 2023. File 4 is for
 floral temperatures of an intact flower the stage of Opening and a
 calyx-removed flower at the same stage, and the ambient temperature.
 Temperature measurements were conducted using eighteen replicates, and for
 each replicate, the temperature was measured at 1-min intervals for 10 min
 on 1st February 2024, and on 27th and 28th February 2025. File 5 is for
 floral temperatures of an intact flower the stage of Opened and a
 calyx-removed flower at the same stage, and the ambient temperature.
 Temperature measurements were conducted using eighteen replicates, and for
 each replicate, the temperature was measured at 1-min intervals for 10 min
 on 1st February 2024, and on 27th and 28th February 2025. File 6 is for
 floral temperatures of an intact flower after corolla naturally fell off
 (the stage of Fallen) and a calyx-removed (partly) flower at the same
 stage, and the ambient temperature. Temperature measurements were
 conducted using eighteen replicates, and for each replicate, the
 temperature was measured at 1-min intervals for 10 min on 31st January,
 and on 27th and 28th February 2025. File 7 is for floral temperatures of
 an intact flower the stage of Opening and a corolla-removed flower at the
 same stage, and the ambient temperature. Temperature measurements were
 conducted using eighteen replicates, and for each replicate, the
 temperature was measured at 1-min intervals for 10 min on 1st February
 2024, and on 27th and 28th February 2025. File 8 is for floral
 temperatures of an intact flower the stage of Opened and a corolla-removed
 flower at the same stage, and the ambient temperature. Temperature
 measurements were conducted using eighteen replicates, and for each
 replicate, the temperature was measured at 1-min intervals for 10 min on
 1st February 2024, and on 27th and 28th February 2025. File 9 is for
 floral temperatures of flower at the stage of Opening: intact control,
 after making a hole in the corolla and sealing the hole with Vaseline.
 Temperature measurements were conducted using eighteen replicates, and for
 each replicate, the temperature was measured at 1-min intervals for 10 min
 on 31st January and 1st February 2024, and on 27th and 28th February 2025.
 File 10 is for seed production (seed number per fruit) in two years, after
 three treatments: intact control, calyx removal and corolla removal. File
 11 is for seed production (seed number per fruit) in two years, after
 three treatments: intact control, making a hole and sealing the hole with
 Vaseline.