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- Title
HEAVY METAL TOLERANCE AND BIOCHEMICAL ATTRIBUTES OF SELECTED WHEAT GENOTYPES ON IRRIGATION WITH INDUSTRIAL WASTEWATERS.
- Authors
Ali, Zeshan; Razi-ul-Hasnain, Raja; Quraishi, Umar Masood; Malik, Riffat Naseem
- Abstract
Present research was designed to investigate heavy metal (HM) accumulation, distribution, relative tolerance and biochemical attributes of diverse 30 wheat genotypes on irrigation with textile (T2) and iron-steel industrial wastewater (T3) in pots in natural environmental conditions. The T3 wastewater was more polluted in terms of HM i.e. Ni, Cr, Mn, Fe, Pb and Zn than T2 wastewater. Relatively acidic pH and low organic matter of T3 recipient soils facilitated higher HM accumulation in corresponding wheat genotypes than T2 and control (T1). Significant genotypic variations in metal accumulation were recorded and pattern of accumulation was i.e. roots>stem>>grain. Tolerant, sensitive and intermediate performing wheat genotypes from T2 and T3 were identified using multivariate techniques. Tolerant genotypes exhibited efficient biochemical mechanisms (antioxidant enzymes and proline) to overcome HM stresses as compared to sensitive genotypes. Cultivation of tolerant wheat genotypes in soils receiving similar HM wastes can minimize their hazardous effects on plant physiology and plant produce. Enzymatic antioxidants i.e. SOD, POD, CAT and proline were identified as important biomarkers of heavy metals toxicity in tolerant and sensitive wheat genotypes. Tolerant genotypes can potentially contribute in regional and global food safety programs on breeding.
- Subjects
INDUSTRIAL waste purification; IRRIGATION; WHEAT genetics; PH effect; PLANT physiology
- Publication
Pakistan Journal of Agricultural Sciences, 2018, Vol 55, Issue 4, p819
- ISSN
0552-9034
- Publication type
Article
- DOI
10.21162/PAKJAS/18.7165