Actinidia species under microscope
Kiwifruit is one of the most recently developed fruit crops and attracts an increasing interest among researchers, farmers and consumers. During less than one century a few species from Actinidia genus conquered most of globe on different cultivation favourable areas. Actinidia sp. breeding and cultivation techniques, besides the fruit quality and postharvest technologies, are important research fields. Intraspecific and interspecific crosses are frequently used in the breeding process and the morphological characterization of the hybrid descendants is an important task. The aim of this paper is to present some original observations made under stereo microscope regarding the morphology of some kiwifruit species and hybrid genotypes, which are cultivated in Romania. The morphological characterizations of pollens, leaves, green shoots, fruits and barks were investigated among A. deliciosa, A. chinensis and A. arguta, in order to define the existing microscopic differences between them. Seeds, young roots and leaves taken from A. macrosperma, A. eriantha, A. arguta and A. chinensis were placed under a stereo microscope. The results showed how differently morphological characters are influenced and defined by different species. Most of the kiwifruit interspecific hybrid genotypes of A. deliciosa × A. chinensis and A. chinensis × A. arguta were similar with the original parental species. Further observations regarding morphological characters among Actinidia species and genotypes are needed to better understand the anatomical differences between their anatomy and to define simple determination/identification keys.
Iliescu, L.M. and Stănică, F. (2022). Actinidia species under microscope. Acta Hortic. 1332, 71-78
kiwifruit, flower, pollen, fruit, seed, leaf