Assessment of hydro-priming on overcoming the allelopathic effect of walnut leave aqueous extract on seed germination and seedling growth
Paper Details
Assessment of hydro-priming on overcoming the allelopathic effect of walnut leave aqueous extract on seed germination and seedling growth
Abstract
Juglone (5-hydroxy-1,4-naphthoquinone) is an allelochemical responsible for walnut allelopathy. In order to assess the effects of hydro-priming on overcoming the allelopathic stress of walnut leave aqueous extract (control, 1.5, 3 and 6 percent) on seed germination and seedling growth of wheat and corn a laboratory experiment was conducted in University of Payame noor, Iran. Results showed that with increasing of walnut leave aqueous extract, especially sever concentration (6 %), germination percentage, shoot length of wheat and corn were inhibited. Root length and germination rate of corn and root dry weight of wheat were also declined with increasing of extract concentration. The highest germination percentage and root length of wheat were obtained by seeds hydro-primed. However, seeds of corn were not affected by hydro-priming. Significantly interaction of extract × hydro-priming on shoot dry weight suggested that hydro-priming can improve seedling growth of wheat under juglone allelochemical conditions. Therefore, hydro-priming can be used to promote seed germination and seedling growth of wheat seeds and may be beneficial to the arrangement of intercropping system(s) of juglone-sensitive species between walnut trees in the same field.
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