Induction of SAR - Resistant gene induction by salicylic acid (Jun/15/2006 )

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He friends
i am going 2 induce SAR in rice by the use of Salicylic acid for induction of resistant genes. but want 2 know at wat concentration the salicylic acid is effective and after wat time of the induction i have 2 isolate mRNA.
thnaks