TY - JOUR
T1 - Factors determining petal colour of baccara roses II
T2 - The effect of pigment concentration
AU - Biran, I.
AU - Robinson, M.
AU - Halevy, A. H.
PY - 1974/8
Y1 - 1974/8
N2 - 'Blueing' in young and senescing petals was compared in the red rose cv. Baccara. The 'blueing' of senescing flowers is accompanied by a bathochromic shift in the light reflectance curve, a rise in the pH value and a decrease in the malic acid concentration of the petal tissue. These factors indicate that a complex with a co-pigment is produced. Similar changes were not found in the 'blueing' of young flowers, where a decrease was found in pigment concentration per unit weight as well as per unit area of petal. A similar 'blueing' was achieved by diluting a solution of crystalline cyanin. The phenomenon of 'blueing' by dilution is discussed in the light of Bougeur's law.
AB - 'Blueing' in young and senescing petals was compared in the red rose cv. Baccara. The 'blueing' of senescing flowers is accompanied by a bathochromic shift in the light reflectance curve, a rise in the pH value and a decrease in the malic acid concentration of the petal tissue. These factors indicate that a complex with a co-pigment is produced. Similar changes were not found in the 'blueing' of young flowers, where a decrease was found in pigment concentration per unit weight as well as per unit area of petal. A similar 'blueing' was achieved by diluting a solution of crystalline cyanin. The phenomenon of 'blueing' by dilution is discussed in the light of Bougeur's law.
UR - http://www.scopus.com/inward/record.url?scp=0242495315&partnerID=8YFLogxK
U2 - 10.1093/jxb/25.4.624
DO - 10.1093/jxb/25.4.624
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0242495315
SN - 0022-0957
VL - 25
SP - 624
EP - 631
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
IS - 4
ER -