Biocontrol: Mycorrhizal fungi and PGPR

Wednesday, January 16, 2008

SYMPTOMS


The above ground symptoms are reduced growth, fewer, small, pale green, or yellowish leaves that latter tends to wilt. Affected plants unusually linger the growing season and are seldom killed prematurely. The underground symptoms shows infected roots swell at the point of invasion and developed into typical root-knot galls that are two to several times as larger in diameter as the healthy root. Several infections takes place along the same root, and developing galls gives root rough, clubbed appearance. However, infected roots remain smaller; show various stages of necrosis, and developing rooting, particularly late in season.

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