Phenotypes and quantitative measurements of traits from mock control and progenies of heavy metal (Hg²⁺ at 100 µm) stressed plants under normal and heavy metal stress conditions (Hg²⁺ at 100, 300 and 500 µm, respectively).

<p>(<b>A</b>) The overall seedling phenotypes of plants (two individuals are shown) under normal (left-most) and three heavy metal (from left to right: 100, 300 and 500 µm) Hg²⁺ stress conditions, Bars = 5 cm. (<b>B</b>) Phenotypic analysis of mock control plants (Mock) and two successive selfed-pollinated progenies, S1 and S2, derived from S0-Hg²⁺ (50 µm). Seeds were germinated and seedlings grown for 10 days on Hoagland nutrient solution with or without the indicated concentrations of Hg²⁺. Plant height, fresh weight and chlorophyll content were measured. For all measurements, data are from three independent experiments each containing 10 individual plants. Error bars represent standard error (SE). * and ** denote statistical significance at 0.05 and 0.01 levels respectively in student's test.