chlorophyll a


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Related to chlorophyll a: chlorophyll b, chlorophyll c

chlorophyll a

[′klȯr·ə‚fil ′ā]
(biochemistry)
C55H72O5N4Mg A magnesium chelate of dihydroporphyrin that is esterified with phytol and has a cyclopentanone ring; occurs in all higher plants and algae.
References in periodicals archive ?
The energy is passed on to the chlorophyll a who is delighted.
Cultivar###Part of bract###Colour###Total chlorophyll a + b###Carotenoids###Anthocyanins
Chlorophyll a is more strongly degraded than chlorophyll b (WOLF, 1956), which may explain the reduction of the chlorophyll a/b ratio when the chlorophyll meter readings were below 40 (Figure 2b).
After giving the slugs an amino acid labeled with radioactive carbon, Pierce and his colleagues identified a radioactive product as chlorophyll a.
Both GPP rates and chlorophyll a concentration decreased in estuaries with larger areas of fringing salt marsh (Fig.
Growth period###Tobacco varieties###Contents###of total Contents of carotenoid Ratio of chlorophyll a Ratio of total chlorophyll to
The sensitivity of chlorophyll b against drought stress was more than chlorophyll a and the halt in synthesis of chlorophyll b occurred faster.
1996) observed that water stress reduced chlorophyll a and b contents by 38% compared with the adequately watered plants.
Two reflectance indices, the normalized total pigment to chlorophyll a ratio index (NPCI),
Amounts of chlorophyll a, chlorophyll b, and total carotenoids were calculated as described previously (Lichtenthaler and Wellburn, 1983).