TAILIEUCHUNG - Evaluating the growth capacity and heavy metal absorption of sweet sorghum and grain sorghum at the seedling stage
In recent years, the use of plants for clean-up and recovery (phytoremediation) has been studied and used in many countries of the world. In this study, E-Tian sweet sorghum (ET) and BT x 623 (BT) sorghum were treated with heavy metal cadmium at 5 concentrations (0, 5, 10, 25, 50 mg/kg). | 44 Nong Lam University, Ho Chi Minh City Evaluating the growth capacity and heavy metal absorption of sweet sorghum and grain sorghum at the seedling stage Dinh Thi Thanh Tra Quang Binh University, Vietnam ARTICLE INFO Research Paper Recieved: May 09, 2018 Accepted: July 31, 2018 Keywords Cadmium Grain sorghum Heavy metal Phytoremediation Sweet sorghum Corresponding author ABSTRACT In recent years, the use of plants for clean-up and recovery (phytoremediation) has been studied and used in many countries of the world. In this study, E-Tian sweet sorghum (ET) and BT x 623 (BT) sorghum were treated with heavy metal cadmium at 5 concentrations (0, 5, 10, 25, 50 mg/kg). The growth of plant; absorption, accumulation of cadmium (Cd) heavy metals in plant parts at the seedling stage have been identified and assessed. The results showed that Cd affected the height and number of leaves of the plant. Especially, Cd accumulation in the plant decreased in sequence: root, stem, leaf. When comparing the heavy metals accumulation in the two cultivars, the results showed that the BT cultivar had higher Cd uptake and accumulation potential than ET. Therefore, BT can be used for phytoremediation of heavy metals in soil but not for providing food and feed. Dinh Thi Thanh Tra Email: dinhthanhtra83@ 1. Introduction will be a competitive candidate species for soil remediation due to its great biomass and strong Nowadays, heavy metal contamination in soil resistance to adverse environmental conditions. has become a great concern for global and every To preliminarily evaluate its potential for phycountry due to human’s mining and using fertil- toremediation, a number of morphological and izer and pesticide application, and fuel produc- physiological characteristics of sorghum were intion. . . (Garbisu and Alkorta, 2003). Excessive vestigated under heavy metal stresses (Cd, Pb, heavy metals, for example, lead (Pb), chromium Zn, Cu) in previous studies (Zhuang et al., .
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