Advances in Zoology and Botany Vol. 8(2), pp. 69 - 73
DOI: 10.13189/azb.2020.080206
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Phytotoxicity of Arsenite on Early Seedling Growth of Mung Bean: A Threat to Potential Pulse Cultivation


Arpita Swarnakar *
Department of Botany, Bangabasi College, University of Calcutta, India

ABSTRACT

Arsenic toxicity has gained at present an alarming global importance. Pulse crop is very sensitive to arsenic contaminated groundwater. In order to determine the phytotoxicity, effects of Sodium arsenite (NaAsO2) on seed germination and early development of Mung bean (Vigna radiata (L.) Wilczek cv. B-105) seedlings were investigated. Sodium arsenite had a toxic effect and posed a stress over germination parameters and early growth of mungbean seedlings. Considerable reduction in seed germination percentage and seedling vigour index was recorded due to arsenite. Sodium arsenite inhibited growth at very small concentrations such as 0.5µM. With the increase in concentration of sodium arsenite (0.5µM, 1µM, 2µM), significant decrease in seedling length i.e., shoot length and root length was observed. Arsenite was found to be more toxic for root growth than for shoot growth. Decrease in primary leaf area was also observed with increase in concentration of sodium arsenite. Number of stomata decreased and hence, reduction in stomatal density and stomatal index was also observed. Fresh weight and dry weight also reduced appreciably in the arsenite stressed seedlings. Treatment with 2µM concentration proved to be the most sensitive concentration for arsenite application by giving least values for seedling length and seedling vigour index.

KEYWORDS
Vigna radiata, Sodium Arsenite, Seed Germination, Seedling Vigour Index

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Arpita Swarnakar , "Phytotoxicity of Arsenite on Early Seedling Growth of Mung Bean: A Threat to Potential Pulse Cultivation," Advances in Zoology and Botany, Vol. 8, No. 2, pp. 69 - 73, 2020. DOI: 10.13189/azb.2020.080206.

(b). APA Format:
Arpita Swarnakar (2020). Phytotoxicity of Arsenite on Early Seedling Growth of Mung Bean: A Threat to Potential Pulse Cultivation. Advances in Zoology and Botany, 8(2), 69 - 73. DOI: 10.13189/azb.2020.080206.