chlorophyll b


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chlorophyll b

[′klȯr·ə‚fil ′bē]
(biochemistry)
C55H70O6N4Mg An ester similar to chlorophyll a but with a ‒CHO substituted for a ‒CH3; occurs in small amounts in all green plants and algae.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In this case, it has two effects on chlorophyll b fluorescence (peaks at 640 and 667 nm).
For 'Maravilha', the correlations with high magnitude, positive and more significant (p < 0.05) occurred between the leaf contents of N and Mg and the index of chlorophyll b (0.96 and 0.95, respectively), between S contents and total chlorophyll (0.91) and between the contents of B and Zn and the index of chlorophyll a (0.91 and 0.92, respectively) (Table 5).
Characteristics, namely, height, GBH, chlorofluorescence, chlorophyll a, chlorophyll b, total chlorophyll, chlorophyll ratio, protein, and sugar exhibited significantly both positive and negative correlation.
There are 2 type of chlorophyll pigments being study in this analysis; chlorophyll a and chlorophyll b. Chlorophyll a was the main pigment that assists the photosynthesis reaction while chlorophyll b was the accessory pigments that function to passes energy absorbed through the visible wavelength to chlorophyll a for the photosynthesis process.
Both, concentration of chlorophyll a and chlorophyll b were increased in partially coloured bracts.
Most plants possess chlorophyll a and chlorophyll b which are the main photosynthetic pigments (Campbell and Reece,2005).
At flowering time, 20 plants were chosen randomly from each plot to determine yield attributes including chlorophyll a, chlorophyll b (by spectrometer), chlorophyll ab, total chlorophyll (by chlorophyll measurement), and yield per hectare and stomatal Conductance.
The leaf chlorophyll a concentration appeared to be reduced to a greater proportion than chlorophyll b concentration in these greenbug-damaged leaves (Table 1).
As one explanation for the pigment similarity, the researchers suggest that both chloroplasts and Prochlorothrix could have separately evolved chlorophyll b.
The content ratio of chlorophyll a to chlorophyll b (Ca/Cb) at the same growth period maintained at about 3 both in Burley21 and Maryland609 from transplanting period to mature period; the content ratio of total chlorophyll to carotenoid (Ca + b/Cx) in Maryland609 also maintained at about 5, but in Burley21, it showed a downward trend (Table 2).