The effect of hydropriming on germination barriers in triploid watermelon seeds

文献类型: 外文期刊

第一作者: Zheng, X. Y.

作者: Zheng, X. Y.;Li, X. Q.;Xu, Y.

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期刊名称:SEEDS: BIOLOGY, DEVELOPMENT AND ECOLOGY

ISSN:

年卷期: 2007 年

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收录情况: SCI

摘要: In order to overcome the germination barriers present in triploid watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai), seeds from six cultivars were subjected to priming by soaking them in 0.1% H2O2 or water for 2h, followed by 24, 34 or 48h incubation at 100% relative humidity (RH). Germination, viability and seedling growth rates were significantly increased (38-56%) by the priming treatments. The germination percentage of the six cultivars was increased by varying degrees (14-66%), depending on the cultivar. The H2O2 priming treatment, when combined with either 34 or 48 It incubation, gave the best results. The beneficial effects of the priming treatment were maintained after the primed seeds were re-dried back to their original moisture content and stored. A soft X-ray investigation of seed and embryo structure indicated that the germination barriers present in the triploid watermelon seeds were related to seed coat, and that the priming treatments overcame these barriers.

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