Effect of Toxic Concentrations of H+ and AI on Nonsymbiotic Growth of Groundnut in Solution Culture

Kasran, Rosmin and Shamsuddin, Zulkifli and Edwards, D. G. (1992) Effect of Toxic Concentrations of H+ and AI on Nonsymbiotic Growth of Groundnut in Solution Culture. Pertanika, 15 (3). pp. 180-197.

[img] PDF
2318Kb

Abstract

Two solution culture experiments We1'e conducted to stt,d)' the effects of toxic concentrations of H and aluminium on. nOllsymbiotic growth ojgroundnut (Arachis hypogaea L.) cu. Maljam. TheJive pH lroels used were 3,5, 4,0, 4.8.5.5 and 6.5, and the sum of activities o/monomeric Al species (LaM_"/I) were 0. 1.5. 3.0, 15,35 and 80 I'-M at pH 4.3. The H' iOIl concentratian at pH 3.5 did not aiJed top dry weight but markedly decreased root d,)' weight and kngth. Raisillg the solution pH 10 4.0 illlp1VlJed the grawth oj roots. The pH level recom-mended Jar growth of groundnut was ~ 4.4. The non-toxic concentration of aluminium for growth of groundnut and mot elongation was ~ 12.2 p,M La,u_",,(==: 17.1 J..L1W monomeric-Al or 20.3 J-LM monomeric total-Ai). Increasing the };a-\/Jfl""/I to 80 J..LM decreased the magnesium concentration in the youngest expanded leaf (YeL) to 0.18%. a value known to be deficient for groundnut. J\1agnesium concentmtion in the YEL was more sensitive to aluminium. toxicity than magnesium concentration in the roots. Tlu! results also showed that root dry weight and root length ·responded positively to low concentrations oj aluminium (1.5 1·L1W ~aAI,""'i"); this effect was not observed for dry' weight oj tops

Item Type:Article
Keyword:groundnut, H· toxicity, aluminium toxicity, solution culture
ID Code:2950
Deposited By: Nur Izzati Mohd Zaki
Deposited On:19 Nov 2009 08:15
Last Modified:27 May 2013 07:04

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 19 Nov 2009 08:15.

View statistics for "Effect of Toxic Concentrations of H+ and AI on Nonsymbiotic Growth of Groundnut in Solution Culture"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.