TY - JOUR
T1 - The influence of light intensity, temperature and carbon dioxide concentration on anthocyanin content and blueing of 'Baccara' roses
AU - Biran, I.
AU - Enoch, H. Z.
AU - Zieslin, N.
AU - Halevy, A. H.
PY - 1973/4
Y1 - 1973/4
N2 - The effect of light intensity, temperature and CO2 concentration on anthocyanin content, blueing of flowers and size of flower buds was examined in 'Baccara' roses. Reflectance percentage at 425 nm was found to be an accurate measure of petal blueing. Reflectance was higher as the degree of blueing (determined by subjective estimation) increased and pigmentation decreased. During the first stage of development of the flower branch (elongation stage) temperature and light intensity had no effect on blueing. During Stage 2 of development (main stage of bud development), high temperatures and low light intensities caused blueing, whereas low temperatures during this stage, even at low light intensities, prevented blueing. Blueing was associated with low concentrations of CO2 (0-100 vpm) as well as darkness. High concentrations of CO2 (1500-3000 vpm) prevented blueing and increased pigmentation and flower size. The effectiveness of CO2 in preventing blueing is related to high light intensities.
AB - The effect of light intensity, temperature and CO2 concentration on anthocyanin content, blueing of flowers and size of flower buds was examined in 'Baccara' roses. Reflectance percentage at 425 nm was found to be an accurate measure of petal blueing. Reflectance was higher as the degree of blueing (determined by subjective estimation) increased and pigmentation decreased. During the first stage of development of the flower branch (elongation stage) temperature and light intensity had no effect on blueing. During Stage 2 of development (main stage of bud development), high temperatures and low light intensities caused blueing, whereas low temperatures during this stage, even at low light intensities, prevented blueing. Blueing was associated with low concentrations of CO2 (0-100 vpm) as well as darkness. High concentrations of CO2 (1500-3000 vpm) prevented blueing and increased pigmentation and flower size. The effectiveness of CO2 in preventing blueing is related to high light intensities.
UR - http://www.scopus.com/inward/record.url?scp=0013352519&partnerID=8YFLogxK
U2 - 10.1016/0304-4238(73)90026-5
DO - 10.1016/0304-4238(73)90026-5
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AN - SCOPUS:0013352519
SN - 0304-4238
VL - 1
SP - 157
EP - 164
JO - Scientia Horticulturae
JF - Scientia Horticulturae
IS - 2
ER -