Abstract:
Micronutrient such as zinc, copper, iron, chromium, manganese, molybdenum and chlorine are responsible for the regulatory function of cell organelles, as the nutrients that are consumed and present at lower concentration in plant tissues are often regarded as plant’s nutritional requirements. Excessive micronutrients are biologically toxic to plants, in response plants shows various morpho-anatomical, biochemical and cellular adaptations. The objective of the present study is to determine the effect of certain micronutrients (Zn, Cu, Cr) in various concentrations affecting the growth of Hordeum vulgare L. Concentrations that were maintained during the study were T0=control, T1= 30uM, T2=60uM, T3=120uM and T4= 240uM of all there micronutrients of ZnSO4, CrCl3 and CuSO4. The experiment was performed with three replicates in CRD (Completely Randomized Designed). Results indicated that in pre-reproductive morphological data the micronutrients treatment showed positive effect on plant growth. At prereproductive stage of plants ZnSO4 treatment showed significant decrease in number of leaves, dry and fresh weight. At post-reproductive level, increasing micronutrient amount caused decrease in overall Hordeum vulgare growth parameters. Hordeum vulgare showed significant increase in root anatomical characters including epidermal and cortical thickness to store excessive micronutrients. Stem epidermal and cortical thickness also increased while declined all the other parameters. In leaves significant increase in epidermal and cortical cell area with increase in xylem and phloem thickness was recorded at the lower concentration of micronutrients. The micronutrient application increase plants growth up to the 60uM concentration. Higher concentrations of micronutrients showed the significant decrease of Hordeum vulgare growth.
Page(s):
138-138
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023
Keywords:
Adaptive strategies
,
micronutrients
,
Barley Hordeum vulgare L
,
Tolerance Potential