Abstract
The genus Actinidia contains species with a wide variety of fruit appearances and skin types. The structure of the skin and associated tissues from three commercial species—Actinidia arguta (‘Hortgem Tahi’), Actinidia chinensis (‘Hort16A’), and Actinidia deliciosa var. deliciosa (‘Hayward’)—has been examined. Actinidia arguta has the simplest skin structure consisting of an epidermis, with a thick cuticle, and a hypodermis that is one to two cells thick. The skin is essentially hairless. In contrast, the skins of both A. chinensis and A. deliciosa have a more complex structure comprising a thick layer of dead, radially compressed cells with suberized cell walls over the hypodermis. In both species, simple uniseriate and complex multiseriate hairs are present. In A. deliciosa, parenchyma cells beneath the hypodermis gradually merge into the fleshy tissue that forms most of the outer pericarp. However, in A. chinensis, this region is separated from the outer skin by a zone containing a mixture of parenchyma...
Published Version
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