Development of a Glossy-fruit-bearing Cucumber (Cucumis sativus L.), ^|^lsquo;Kyuri Chukanbohon Nou 6 Go^|^rsquo;

Abstract

Abstract'Kyuri Chukanbohon Nou 6 Go', a new type of cucumber (Cucumis sativus L.) which bears glossy fruits and has a glabrous trait, was bred from the glabrous accession NCG90 by four times of successive backcrossing with 'Suisei Fushinari' as a recurrent parent. 'Kyuri Chukanbohon Nou 6 Go' has a bloomless trait which makes fruits glossy. The fruit has a smooth surface without warts and spines. The taste is relatively favorable with no bitterness. Fruits are borne on the main stem and lateral branches. They are relatively thicker in shape than those of common Japanese cultivars. The color of the fruit skin is uniformly green and turns greenish-yellow on maturation. There are no hairs on leaves and stems. The glossy (bloomless) and glabrous traits seem to be due to pleiotropy, and are thought to be controlled by a single recessive gene. This cultivar is a useful material for glossy fruit appearance (bloomless) cucumber breeding. Moreover, due to its wartless and spineless traits, it also has a potential for hygienic cucumber breeding.