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Zhongguo Zhong Yao Za Zhi. 2017 Jun;42(11):2046-2051. doi: 10.19540/j.cnki.cjcmm.20170519.001.

[DNA marker-assisted selection of medicinal plants (Ⅲ)Evaluation of disease resistance of "Miaoxiang Kangqi 1" --a new cultivar of Panax notoginseng].

[Article in Chinese]

Author information

1
Institute of Sanqi Research, Wenshan University, Wenshan 663000, China.
2
Institute of Chinese Materia Media, China Academy of Chinese Medicinal Sciences, Beijing 100700, China.
3
Wenshan Miaoxiang Notoginseng Technology Co., Ltd., Wenshan 663000, China.

Abstract

DNA marked-assisted selection of medicinal plants accelerated the breeding and promotion of new cultivars, and guaranteed the healthy development of Chinese medicinal materials industry. The first disease-resistant cultivar of notoginseng, namely "Miaoxiang Kangqi 1", served as the object of study. We evaluated the Kangqi's resistance of seeds, seedlings and root against the pathological bacteria (Fusarum oxysporum) of root rot. Compared to the traditional cultivars, the disease index of notoginseng seeds declined by 52.0% after inoculation for seven days; the death rate of seedlings and disease index of root respectively decreased by 72.1% and 62.4% after inoculation for 25 days. Additionally, the growth inhibition ratio of notoginseng seeds and seedlings declined after inoculation. The seeds, seedlings and roots of "Miaoxiang Kangqi 1" showed significantly resistant to root rot. The evaluation of disease-resistance of Kangqi provided the basis for the popularization of new cultivar and guaranteed the favoring conduct of notoginseng pollution-free cultivation.

KEYWORDS:

disease-resistant cultivars ; incidence rate ; root rot ; Panax notoginseng; disease index

[Indexed for MEDLINE]

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