土壤干旱对葡萄果实发育过程中酚类物质时空积累的影响

以酿酒葡萄品种赤霞珠(Vitis vinifera L.‘Cabernet Sauvignon’)果实为试材,研究了葡萄果实发育过程中土壤干旱对果肉、果皮、种子和果梗中总酚时空积累的影响。结果表明,幼果期(花后30d)种子中总酚含量最高,而成熟期(花后110d)则果梗中含量最高,且土壤干旱(土壤相对含水量为田间最大持水量的60%±5%)对总酚的空间积累无明显影响。果实发育过程中,果皮、果肉和种子中总酚含量呈持续下降趋势,但土壤干旱导致幼果期果梗、果皮、果肉和种子中总酚含量分别比CKⅠ(不控制灌溉,土壤相对含水量为田间最大持水量的85%±5%)提高了8.1%、7.1%、8.9%、8.1%,比CKⅡ(采用塑料膜避雨设施,其他同CKⅠ)提高了6.3%、8.0%、19.0%、7.0%;成熟期果梗、果皮、果肉和种子中总酚含量分别比CKⅠ提高了6.8%、14.4%、46.1%、-10.0%,分别比CKⅡ提高了10.5%、33.8%、86.6%、28.7%。土壤干旱并不改变葡萄果实发育过程中总酚的时空积累规律,但能促进果实各部位总酚的积累。

Effect of Soil Drought on Accumulation of Total Phenol in Different Parts of Grape Berry during Development

In this paper,the wine grape(Vitis vinifera L.'Cabernet Sauvignon') berry was used as materials,and the effect of soil drought on the spatial and temporal accumulation of total phenol in different parts of beery during development was studied.The high content of total phenol was found in the seed of young berry and stem of mature berry,respectively,indicating that no obvious effect of soil drought on the spatial accumulation pattern of total phenol.During development of grape berry,the content of total phenol in skin,flesh,and seed decreased,but an increased accumulation induced by soil drought was observed.Compared to CK Ⅰ,the content of total phenol in stem,skin,flesh,and seed respectively increased by 8.1%,7.1%,8.9%,and 8.1% in the young fruit stage(30 days after full bloom),and the parameters respectively increased by 6.3%,8.0%,19.0%,and 7.0% compared to CK Ⅱ.Meanwhile,the content of total phenol respectively increased by 6.8%,14.4%,46.1%,and-10.0% compared to CK Ⅰ in stem,skin,flesh,and seed of mature berry,and respectively increased by 10.5%,33.8%,86.6%,and 28.7% compared to CKⅡ.The results suggested that soil drought could not change the temporal and spatial accumulation of total phenol,but could promote the accumulation of total phenol in different development stages,especially in mature stage.