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首页> 外文期刊>Acta Horticulturae >Date floating ability: adaptation to regions with floods.
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Date floating ability: adaptation to regions with floods.

机译：日期浮动功能：适应洪水泛滥的地区。

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The geographic origin of date palms is unknown. Macrophotography and photomicroscopy were used to observe the structure and ability of the endocarp, whole fruit, or endocarp covered seed to float. We have found that the ripe fruit of dry fibrous low sugar varieties such as 'Degla Beida' can float on water. Soft high sugar or semi dry Bayoud-susceptible varieties, including the commercially important 'Deglet Noor' and 'Majhool', first sink but later are buoyed up by gases they produce before finally sinking again. Gas production by submerged fruit that would otherwise not float thus represents a characteristic varietal adaptation for seed dispersal suited to environments close to bodies of water or which are periodically flooded.
机译：枣椰树的地理起源是未知的。用宏观摄影术和显微显微镜观察了果皮，整个果实或被果皮覆盖的种子的结构和漂浮能力。我们发现，干燥的纤维状低糖品种（如“ Degla Beida”）的成熟果实可以漂浮在水上。软的高糖或半干燥的对巴约德易感的品种，包括具有商业意义的“ Deglet Noor”和“ Majhool”，首先沉没，但后来被产生的气体所吸收，最后再次沉没。因此，淹没的果实产生的气体否则不会漂浮，因此代表了种子散播的特征性品种适应性，适用于靠近水体或周期性淹水的环境。

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