chlorophyll b

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Noun1.chlorophyll b - a dark-green plant pigment having a brilliant green alcohol solution; generally characteristic of higher plants
chlorophyl, chlorophyll - any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms
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References in periodicals archive ?
Water is a Lewis base that appears to be the "regulatory" binder because of its strong interaction with chlorophyll b and its poor interaction with chlorophyll a.
(1986) concluded that examining the chlorophyll-protein and peptide composition of manganese deficient and control sugar beet thylakoids and found decrease in manganese decreased several thylakoid polypeptides, including chlorophyll b containing 30 kDa chlorophyll-protein complex.
where, Chla is the content of chlorophyll a, Chlb is the content of chlorophyll b, Chlt is the total chlorophyll, A663 is the absorbance at 663 nm, and A645 is the absorbance at 645 nm.
Exceptions occurred for 'Maravilha', which showed negative associations between leaf K contents and chlorophyll b indices (-0.88) and between leaf Cu contents and chlorophyll a indices (-0.81) (Table 5).
The most important reason for preferring chlorophyll-a in phytoplankton biomass determination is due to a main photosynthetic pigment in all photosynthetic organisms while other algal pigments (chlorophyll b and c carotenoids and phycobillins) have limited distribution and are therefore considered as secondary pigments (Akpan 1994).
Chlorophyll a and chlorophyll b content was calculated from the following formulae:
Chlorophyll a and b and total chlorophyll also depicted significant variation (0.1%) with maximum chlorophyll a content (0.92 mg/g fresh weight), chlorophyll b (0.54 mg/g fresh weight), and total chlorophyll (a+b), (1.46 mg/g fresh weight) estimated in clones 235 and 123 belonging to Gonda and Nepal, respectively (Table 2).
On day 14, chlorophyll a, chlorophyll b, and chlorophyll a + b were found to significantly lower in the 2000 ppm Pb treated plants as compared to the control plants (Table 3).
Chlorophyll b = 20.13 [A.sub.646nm] - 5.03 [A.sub.663nm]
There are two types of chlorophyll in plant leaves, chlorophyll a and chlorophyll b. Chlorophyll a absorbs light having a wavelength of up to 700 nanometers.