Effects of salicylic acid on response of Brassica napus to lead stress in hydroponic culture

Subject Areas : New Finding in Agriculture

Sh. Boroumand Jazi ¹ (M. Sc in Plant Physiology and Yong Researchers Club Member, Islamic Azad University, Falavarjan Branch, Falavarjan, Iran)
M. Ranjbar ² (Department of Agronomy and Plant Breading, Falavarjan Branch, Islamic Azad University, Falavarjan, Iran)
H. Lari yazdi ³ (Department of Agronomy and Plant Breading, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran)
Kh. Esteki ⁴ (Department of Agronomy and Plant Breading, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran)

Received: 2015-11-27 Accepted : 2015-11-27 Published : 2012-08-22

Keywords: Salicylic acid, Chlorophyll, Brassica napus L, Lead, Parameters of growth,

Abstract :

           In this research the effects of lead poisons with different concentration 0,0.25,0.5,0.75,1,1.5 and 2 mM, also above concentration it was accompanied by salicylic acid (5 and 10μM)on parameters of growth  and  change of chlorophyll a, b and a+b in Brassica napus L. Cultivar Opera was investigated. The Rapeseed was planted in hydroponic culture for 10 days.At the end of treatment the roots and shoots of canola were harvested separately and the length of root and shoot, leaf area, fresh and dry weight of root and shoot, SLA, SLW, LAR and LWCA and change of chlorophyll a, b and a+b were measured. Collected data were extracted and statistical analysis with SPSS statistical soft ware and test of Duncan performed. The result was shown that the length of root and shoot, leaf area, fresh and dry weight of root and shoot, SLA, LAR and amount of chlorophyll a, b and a+b with increasing the concentration of Pb (No3)2 in comparing with control group was significantly decreased and SLW and LWCA was significantly increased (p<0.01). With application of salicylic acid with concentration of (5 and 10 μM) all damage due of lead stress modified.

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