PJB-2019-471
EFFECT OF SORGHUM [Sorghum bicolor (L.) MOENCH] AQUEOUS EXTRACT ON GERMINATION AND SEEDING GROWTH OF WHEAT, WILD BARLEY, WILD OAT AND CANARY GRASS
Krmanj Y. Naby
Abstract
Abstract Weed control is a necessary tool in crop production because of remarkable economic losses in crop yield. A bioassay experiment was conducted in Agriculture College, Salahaddin University in order to evaluate phytotoxic activity of Sorghum bicolor shoot aqueous extract on germination and some parameters of Triticum aestivum L., Triticum durum L., Hordeum spontaneum, Avena fatua and Phalaris minor seeds. Shoot aqueous extract of Sorghum bicolor were applied to 20 seeds of each species. The quantification and determination of allelopathic substance were done by using high performance liquid chromatography (HPLC). Results indicated that the sorghum shoot aqueous extract significantly affected germination percentage, inhibition of germination percentage, total dry weight, seedling growth inhibition, plumule and radicle dry weight, seedling length, seedling vigor index, plumule and radicle length, plumule and radicle elongation velocity. Moreover, the five tested plant species were responded significantly in a different ratio to sorghum aqueous extracts. In addition, all concentration levels had on germination and all growth parameters, especially higher concentration levels. The germination percentage of wild barley was eliminated due to apply 45 and 60% concentrations. The HPLC results showed that the shoot of sorghum plant contained syringic acid, vanillic acid, and ferulic acid.
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