A New High-Quality, Disease Resistance and High-Yielding Rehmannia glutinosa Cultivar, 'Kokang'

摘要

Kokang is a high-quality, disease resistant and high-yielding Rehmannia glutinosa cultivar developed by the medicinal crop breeding team of National Institute of Crop Science, RDA, during the period from 1997 to 2005. The reproduction of Rehmania glutinosa has been accomplished mainly by vegetative propagation with its seedlings have many variants. The cultivar was selected from seedling of Jihwang 1. The plant type of Kokang is some rising from ground. It has higher disease resistance, catalpol content and extract content compared with Jihwang 1. Regional yield trials conducted at three site from 2003 to 2005. The root yield of Kokang was ll.Ston per hectare, which was increased 13% compared with a check variety, Jihwang 1. This cultivar is adaptable to the whole of Korea except for mountain areas.