Toxicity of arsenic (As) on seed germination of sunflower (Helianthus annuus L.)

International Journal of Physical Sciences

Muhammad Asif Imran¹ 

关键词: Sodium arsenate;    sodium arsenite;    sunflower;    seed germination;    seedling growth.;   

DOI  :  10.5897/IJPS2013.3894

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

The effect of different levels (2, 4, 6, 8 and 10 mg/L) of arsenic (as sodium arsenate and sodium arsenite) on germination percentage, mean germination time, days to 50% germination, plumule and radicle length and seedling vigour index of four sunflower cultivars (FH-331, FH-385, FH-405 and FH-415) was determined under laboratory conditions. Germination percentage was gradually decreased with the increase in arsenic concentration in case of all sunflower cultivars. Low concentrations (2 and 4 mg/L arsenic) increased while higher concentrations (6, 8 and 10 mg/L arsenic) posed stress and caused reduction in plumule and radicle length (mm) of seedlings as compared to control. Out of all the four sunflower cultivars, H1 (FH-331) proved the most sensitive one by giving least values for plumule length, radicle length and seedling vigour index as observed during the course of this experiment.

【 授权许可】

CC BY