Renu Bhardwaj, Priyanka Sharma, Hardesh Kumar Arora and Nitika Arora
Keywords: 28-homobrassinolide, bioconcentration factor, heavy metal stress, Indian mustard.
Abstract: The present study describes the effects of 28-homobrassinolide (28-homoBL) on plant growth, metal (Mn) uptake and bioconcentration factor (BCF) in plants of Brassica juncea L. cv. PBR 91 under Mn stress. The seeds of B. juncea pre-treated with different concentrations of 28-homoBL were sown in earthen pots containing various concentrations of heavy metal (Mn) in soil. The observations were made for percent seed germination, shoot length and fresh weight, Mn-uptake and BCF after 30 days of sowing. The investigation revealed reduced rate of growth and germination with increasing concentration of metal. However pre-treatment of 28-homoBL was found significantly effective in lowering the growth inhibition and germination and metal uptake, indicating stress protective properties of this compound.
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