NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Popular Science Magazines >
Science Reporter >
SR Vol.47 [2010] >
SR Vol.47(02) [February 2010] >


Title: Secrets of Plant Pigments
Authors: Ghosh, Dipanjan
Issue Date: Feb-2010
Publisher: CSIR
Abstract: Colours of higher plant organs depend largely on the pigments they contain. These pigments are not only responsible for the beautiful colours we observe around us, they are also integral to the survival of the plants and life on earth too.
THE world is like a colour box with waves of colours everywhere. The radiance of colour we see in and around our mundane life is bestowed on us mostly by the magnanimity of plants. The greenery of leaves and tender stems soothe our eyes. The withered yellow and red leaves fallen on the ground mark the onset of autumn. Come spring and the surroundings are bedecked with flowers of various shades. Colourful strawberries and apples are visually appealing. But pigments in plants do much more than just help plants perform aesthetic functions. We all know that photosynthesis is the first step in the food chain that connects all living organisms. Plants use chlorophyll to covert sunlight into energy they can store in simple sugar during photosynthesis. The concocted food is later utilized by plants to run different life processes. Pigments also play a significant role in pollination as well as propagation. A flower may be rendered conspicuous by the bright colour of its petals or perianth (floral parts not differentiated into sepals and petals) and thus attracts certain insects. However, majority of the compound-eye insects are bichromatic and they have just two types of colour pigment receptors. Their colour spectrum is limited and blue shifted compared to ours. Honeybees are trichromatic—they have three types of pigment receptors like us. They can distinguish a wider spectrum and that is why honeybees visit various coloured flowers to fetch honey and are mostly involved in pollination. Red colour is invisible to insects while they can see ultraviolet light and so insects distinguish flower colour different from humans.Some butterflies are also successful pollinators as they are able to distinguish flower colour like honeybees.
Page(s): 29-33
ISSN: 0036-8512
Source:SR Vol.47(02) [February 2010]

Files in This Item:

File Description SizeFormat
SR 47(2) 29-33.pdf801.65 kBAdobe PDFView/Open
 Current Page Visits: 772 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 622496 since 06-Feb-2009  Last updated on 13-Nov-2014Webmaster: nopr@niscair.res.in