Innovative application of NIR-AOTF and MRI to study water behaviour in cut flowers

A. Bellincontro, M. Valentini, R. Forniti, F. Mencarelli

Research output: Contribution to journalArticle

Abstract

In order to study the water status of cut flowers, a comparision study was made between flowers stored in water and flowers stored «dry pack», by using a portable NIR (near infrared)-AOTF(acousto-optical tunable filter) instrument and MRI (magnetic resonance imaging). As model flower, Zantedeschia aethiopica (commercially known as Calla lily) was used. To predict the weight loss and water content by NIR-AOTF, cut flowers were dried in a cold room at 10°C (±1°C) and 85% (±5%) relative humidity (RH), and measured for weight loss. For MRI application, 4 and 20°C storage temperatures were used for flowers kept in water or dry; two stem sections, basal and middle, were measured. Significant correlation results for weight loss and water content (R2 in calibration = 0.98 for estimated % of water loss and 0.96 for % of water content; R2cv = 0.95 and 0.90) were obtained by NIR-AOTF spectra acquisitions. MRI detected vessel degrada- tion in the stem of the water-stored flowers at 4°C but at 20°C in dry storage no vessel degradation appeared and images were correlated with dry matter values. The use of image software allowed the transformation of images in normalized population and pixel intensity, which gave hints about the potential use of these data to combine with NIR-AOTF data. NIR-AOTF, an easy-to-use and non destructive instrument, can be used to predict the vase life of cut flowers by measur- ing water content or weight loss. MRI is a powerful tool to identify the plugging of vessels but it is destructive; the image software used represents a useful tool to correlate MRI with NIR-AOTF to predict vessel plugging.

Original languageEnglish
Pages (from-to)30-36
Number of pages7
JournalAdvances in Horticultural Science
Volume29
Issue number1
Publication statusPublished - 2015

Fingerprint

cut flowers
magnetic resonance imaging
flowers
weight loss
Zantedeschia aethiopica
water content
water
stems
vase life
degradation
storage temperature
relative humidity
calibration

Keywords

  • Dry matter
  • Flower
  • Image software
  • MRI
  • NIR-AOTF
  • Plugging
  • Water content

ASJC Scopus subject areas

  • Horticulture

Cite this

Innovative application of NIR-AOTF and MRI to study water behaviour in cut flowers. / Bellincontro, A.; Valentini, M.; Forniti, R.; Mencarelli, F.

In: Advances in Horticultural Science, Vol. 29, No. 1, 2015, p. 30-36.

Research output: Contribution to journalArticle

Bellincontro, A. ; Valentini, M. ; Forniti, R. ; Mencarelli, F. / Innovative application of NIR-AOTF and MRI to study water behaviour in cut flowers. In: Advances in Horticultural Science. 2015 ; Vol. 29, No. 1. pp. 30-36.
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