Dravya, a product of seaweed extract (Sargassum wightii), induces resistance in cotton againstXanthomonas campestris pv.malsvacearum

Phytoparasitica - Tập 35 - Trang 442-449 - 2007
Vinay B. Raghavendra, S. Lokesh1, H. S. Prakash1
1Dept of Studies in Applied Botany, Seed Pathology and Biotechnology, University of Mysore, Manasagangotri, India

Tóm tắt

Dravya, a commercially developed aqueous seaweed extract, was evaluated for its effect on the expression of symptoms of bacterial blight caused byXanthomonas campestris pv.malvacearum (E.F. Smith) Dye in cotton. Seed soaking with Dravya (1:500) followed by foliar spray thrice at intervals of 10 days (10, 20, 30 days after sowing) resulted in a reduction in blight incidence on plants by 66%, 70% and 74% as determined 40, 60 and 80 days, respectively, after sowing. Induction of systemic resistance was associated with increases in plant height, total number of bolls formed, boll weight, stem girth, chlorophyll content, total phenols and peroxidase activity, which intimates that Dravya could be used as an ecofriendly potential input in the integrated management of bacterial-blight of cotton.

Tài liệu tham khảo

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