Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
|
Google Search the Journal web-site: |
Abstract - Issue July 2009, 30 (4) BackEffect of copper on growth,
yield and concentration of Fe, Mn,
Zn and Cu in wheat plants (Triticum aestivum L.) Ratan Kumar1,
N.K. Mehrotra2, B.D. Nautiyal2, Praveen Kumar2
and P.K. Singh2 1Horticulture Research and Agriculture and Technology, Dhakrani, Dehradun - 248 142, 2Botany Department, (Received:
Re-revised received: March 13, 2008; Accepted:
April 10, 2008) Abstract: A pot experiment was
conducted at six graded levels of copper (Cu) viz., 0, 0.5, 1.0, 1.5, 2.0 and
2.5 mg kg-1 to test the response of wheat plants grown in a
copper-responsive alluvial soil (entisol) under glass house conditions. The
growth attributes like plant height, fresh and dry matter yield, percent dry
matter enhanced with increasing Cu levels and was maximum at 1.5 mg kg-1
Cu while the number of tillers was minimum at this level. The grain yield at
1.5 mg kg-1 Cu was enhanced by 62.9% from the control. The increase
in weight of 1000 grains ranged from 33.93 to 41.35 g in comparison to control
(32.58 g). Harvest index (%) also increased and ranged from 39.42 to 47.73 in
different treatments in comparison to control (35.92). Both 1000 grain weight
and harvest index were maximum in the plants at 1.5 mg kg-1 copper.
Cu concentrations in leaves, grain and straw enhanced with increasing levels of
Cu application. The Fe concentration in leaves was significantly reduced by Cu
application and the reduction was 10.3% at 2.5 mg kg-1 Cu and was
not influenced in by Cu application in grain and straw. The Mn concentration
was not affected by Cu application in any of the plant part studied. However,
Zn concentration decreased significantly at higher levels of Cu (2.0 and 2.5 mg
kg-1) in leaves and remained unaffected in the grain and straw. Key words: Cu, Fe, Mn, Zn, Growth, Grain, Straw yield PDF of full length paper is available
online Copyright © 2009 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any
form without prior permission. Responsibility regarding the authenticity
of the data, and the acceptability of the conclusions enforced or derived, rest
completely with the author(s). |