Effect of goal (Oxyfluorfen) on linear growth of seedlings and their anatomical characters of Hibiscus cannabinus Linn.

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In the present investigation effect of oxyfluorfen on linear growth of seedlings has been studied. The seedlings have been reported to be most sensitive to the herbicidal action. Uniform seedlings were treated with different concentration of herbicide for 24 hours. Then they were thoroughly washed with distilled water and kept for germination in petridishes containing double layered of moistened filter paper at room temperature for 72 hours. The effect of oxyfluorfen on linear growth of hypocotyl and radicle was noted. This herbicide was effective in checking the linear growth of seedlings. It inhibited the linear growth of seedlings and caused swellings. The radicle was found to be more susceptible than hypocotyl to this herbicide. The lethal dose was found to be 300 ppm for hypocotyl and 250 ppm for radicle. The anatomical changes like ruptured epidermis, disorganization of cortical cells in hypocotyl and radicle and disintegration of mesophyll cells were observed in cotyledon.

Herbicide; Oxyfluorfen; Linear growth; anatomical characters; Hibiscus cannabinus Linn