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In order to evaluate different wheat genotypes against cadmium
contamination of soil, an experiment was carried out in the department of Plant Breeding and Genetics, Pir Mehr Ali Shah-Arid Agriculture University Rawalpindi. The experiment was carried out under
the control conditions. The experiment was laid out by using two
factorial Completely Ran...
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... results of plant height (cm) are shown in table 2. Data showed that, there was a difference present among the Means of all the wheat genotypes. Maximum plant height (cm) was observed in genotype (018674) 15.767 cm followed by genotypes (018679) 15.608 cm, (018680) 15.412 cm and (018685) 15.275 cm, respectively. Mini- mum plant height (cm) was seen in genotype (018688) 11.350 cm, (018692) 11.375 cm and (018683) 11.387 cm, respectively. Maxi- mum plant height was observed at treatment T 1 (16.76). Minimum plant height was recorded at treatment T 0 (10.6) . Treatment means are shown in figure 1. Plant height has a considerable effect on ultimate yield of the wheat crop. Short statured plants are more desirable from high yielding point of view. Our findings showed different cadmium levels do not affect plant height significantly. This means that at a certain level of, Cd "toxicity the plant height trait is not affected. In the present study, interesting results are obtained regarding effect of 5 ppm and 10 ppm of Cd on plant height than rest of the treatments". The variable results might be due to different genetic nature of wheat genotypes. Zhou and Qiu [19] reported that with an increase in Cad- mium concentration plant height is also increased. ...
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Ph.D scholar in Department of genetic and plant breeding, SHIATS, Allahabad Uttar Pradesh India 2 Advisor and Associate, professor department of genetic and plant breeding SHIATS, Allahabad Uttar Pradesh India 3 Ph.D scholar in department of Agronomy, SHIATS, Allahabad Uttar Pradesh India Abstract A storage experiment was conducted to understand th...
Citations
... Wheat germplasm provides a large range of genes and rich sources of genetic variation for improving tolerance to heavy metal, which can provide a solution for the current environmental contamination (Alybayeva et al., 2014;Rabnawaz et al., 2017;Ali et al., 2018). Subsequently, it is needed to screen the genetic potentiality of the genotypes under heavy metal stress to evaluate their effect on plant growth and productivity to identify tolerant genotypes (Alybayeva et al., 2016). ...
Lead is one of the most dangerous pollutants to both the environment and humans. It causes structural changes in photosynthetic apparatus and reduced biosynthesis of chlorophyll pigments inhibits carbon metabolism. The aim of our study was to determine the dynamics of photosynthetic pigments in leaves of wheat (Triticum durum and T. aestivum), barley (Hordeum vulgare) and oats (Avena sativa) at different lead acetate, Pb(CH3COO)2 levels: 0, 0.15, 0.30 and 0.60 g/L. The results of this research indicate that these concentrations significantly affected chlorophyll content of H. vulgare and A. sativa as compared to T. durum and T. aestivum. Analysis of variance showed that lead concentration and interaction between cereal species had a significant effect on all chlorophyll characteristics at 0.1% probability and on carotenoids contents at 1% significance. Lead acetate in 0.3 and 0.6 g/L concentrations had a highly significant effect on chlorophyll a, b and carotenoids in H. vulgare seedlings, its carotenoid contents increased from 0.002 mg/g FW at 0 g/L to 0.107 mg/g FW at 0.6 g/L, whereas its chlorophyll content decreased under heavy metal stress, corresponding to the concentration of the metal ion. Carotenoids of A. sativa were not affected compared to Chl a and Chl b, while higher concentrations significantly increased chlorophyll contents of the seedlings from 1.384 mg/g FW of total chlorophyll at 0 g/L to 1.883 mg/g FW at 0.6 g/L. The increased amount of carotenoids was indicative of the formation of free radicals in plants under heavy metal stress, while decreased levels of chlorophyll content were an indication of reduction in the growth of the plants leading to decrease in the yield. It is suggested that chlorophyll content can be adopted as a very useful in vivo indicator of heavy metal toxicity.
... Wheat germplasm provides very fruitful source of genes and rich sources of genetic variation for improving tolerance to heavy metal which can provide a solution for the current environmental pollution (Ali et al. 2018;Alybayeva et al. 2014;Rabnawaz et al. 2017). The genotypes display different ability to produce acceptable yield under heavy metal stress. ...
... Essentially, heavy metals reduce seed germination, plant growth and grain yield due to their effect on photosynthetic activity, chlorophyll synthesis and antioxidant enzymes (Murzaeva 2004;Rabnawaz et al. 2017;Di Toppi and Gabbrielli 1999). The results of present study indicated that the metals Zn, Pb, Cd and their mixture had significant drastic effect on seed germination ( Fig. 6.1). ...
The phytotoxicity of heavy metals released through anthropogenic activities conclusively reduces crops growth and productivity. The current study was carried out to assess the effect of some heavy metals (zinc [Zn], lead [Pb] and cadmium [Cd]) and their mixture on growth of eight wheat genotypes in early stage under laboratory conditions. The results showed that the heavy metals significantly reduced germination percentage, root and shoot growth. Zn had the least negative effect, while mixture of the three elements had the most drastic effect followed by Cd and then Pb. Wheat genotypes varied in their response to heavy metal stress. Moreover, it could be concluded that wheat genotype Gemmeiza-11 had the maximum tolerance against Zn, Pb, Cd and their mixture followed by Misr-1 and Sids-12, while, Sids-13 and Gemmeiza-9 displayed the lowest tolerance. The tolerant genotypes in early growth stages could be used commercially under heavy metals stress as well as could be utilized as donors for developing promise cultivars destined for agricultural production under heavy metals stress.
