مقالے کی معلومات
جلد
شمارہ
مقالے کی قسم
زبان
تلخیص
Accumulation and soil enrichment with non-essential heavy metals like chromium (Cr) above threshold levels results in Cr
toxicity in plants. In order to study the effect of varying Cr stress levels on maize growth, photosynthesis and gas exchange
capacities and yield responses, two maize hybrids i.e., Wan Dan 13 and Run Nong 35 were grown in soil contained pots
contaminated with different concentrations of Cr (0 µM, 30 µM, 60 µM, 90 µM, 120 µM and 150 µM). Cr toxicity
substantially reduced total chlorophyll contents, net photosynthesis, transpiration rate, inter-cellular CO2, stomatal
conductance, water use efficiency and intrinsic water use efficiency. It further haltered growth (plant height, number of
leaves/plant, leaf area, stem diameter, shoot fresh and dry weight) and yield and related attributes (ears/plant, number of
kernels/row, 100-kernels weight, grain yield/plant, biological yield/plant) as well as harvest index both maize hybrids but the
effects were more conspicuous in Run Nong 35 than Wan Dan 13. The overall toxicity of Cr to both maize hybrids were
recorded as: 150µM > 120µM > 90µM > 60µM > 30µM > 0µM. In sum, Cr contamination negatively influenced on maize, however, Wan Dan 13 was better able to resist Cr-stress than Run Nong 35.
Shakeel Ahmad Anjum, Umair Ashraf, Imran Khan, Muhammad Farrukh Saleem, Long Chang Wang. (2016) Chromium Toxicity Induced Alterations In Growth, Photosynthesis, Gas Exchange Attributes And Yield Formation In Maize, , Volume-53, Issue-4.
-
Views
506 -
Downloads
54