Some Biochemical Parameters of Brassica napus L
نویسندگان
چکیده
s: Chromium is one of the unessential heavy metal that makes high toxicity in the plants. The aim of this study was assaying the changes that come from toxicity of (Cr ) on some biochemical, physiological and 6+ ionic specification of Brassica napus variety sari flower. The tests were conducted at hydro ionic conditions and at 0, 25, 50, 75 and 100 μm concentration of K CrO with four repeats in completely randomized design. In 2 4 the presence of chromium, the weight of dry aerial and root pieces of herb body, total chlorophyll, potassium and calcium of leaves, prolin and dissolved sugar in body and aerial parts were measured. The results showed that chromium usually accumulate in root while a little amount of it moves to leaves. By accumulating of chromium, the dissolved sugar in root and aerial part significantly raised, while weight of dry aerial part reduced when compare with control. Dry weight of root and calcium content of leaves significantly reduced in all treatment unless in test with 25 μm of K CrO . Total chlorophyll and potassium of leaves showed significant 2 4 reduction in compare to control. Prolin of root also increased by induce in toxicity of Cr while prolin of aerial part decreased significantly unless in test by 25 μm of K CrO . Accumulation of chromium in root and high 2 4 amount of dissolved sugar and prolin in different parts of plant could be considered as defensive mechanism of plant to toxicity with chromium.
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