萝卜“糠心”又称空心,是萝卜生长中的常见现象,生长期和贮存期均能发生。它不仅使肉质根重量减轻,而且使淀粉、糖分、维生素含量减少,品质降低,影响加工、食用和耐藏性。“糠心”现象主要发生在肉质根形成的中后期和贮藏期间,由于输导组织木质部的一些薄壁细胞因水分和营养物质运输发生困难 Radish “bran heart ” also known as hollow, is a common phenomenon in the growth of radish, growth and storage period can occur. It not only reduces the weight of fleshy roots, but also reduces the starch, sugar, vitamin content, reduce the quality, affect the processing, consumption and storage resistance. “Bran heart ” phenomenon occurs mainly in the late and during the formation of fleshy roots during storage, due to some of the parenchyma cells of the xylem guiding tissue due to moisture and nutrient transport difficulties