Morphological characteristics of Angelica sinensis
Angelica sinensis is a perennial herb with a height of 0.4 million meters. Root fleshy, conical. After cultivation, most of the branches. After planting in the second year, the stem is erect, 1-1.2 meters high, light purple (a few are light comprehensive color). The leaves are 2-3-pinnately compound, and the base of the petiole is sheathlike clasping. Terminal compound umbel, florets white. The fruit is oval and double hanging, and the two petals are dehiscent after maturity. The flowering period is from June to July and the fruiting period is from August to September.
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Harm and control of Angelica rust
The pathogen is Angelica sinensis stalk rust (P.angelicae). The summer spores are ovate to long oval, yellowish brown, (25Mu42) microns × (22Mel 30) microns, with small spines on the surface and 3 germination pores. Teliospores elliptic to clavate, chestnut brown, (32 / 49) × (17 / 26) microns, round at both ends, slightly constricted at septum; stalk colorless and detachable. Monospore teliospores sometimes occur. 1. Harmful symptoms: damage to leaves, petioles and fruit stalks. Summer spores scattered or grouped on abaxial surface of leaves, bare, brown. Alternaria
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A new strain of Angelica sinensis-90-02
The strain was selected by the Institute of Modern Physics of the Chinese Academy of Sciences (Tel: 0931-4969220) and the Dryland Agriculture Center of Dingxi City, Gansu Province. The stem is green, the plant height is 103-125 cm in seed-setting stage, the main root is well developed, the root system is yellowish white, the root length is 25-55 cm in medicine stage, and the diameter of Reed head is 2-8 cm. The quality-related indicators are: total ash 3.9%, acid insoluble ash 0.3%, extract 68.6%, ferulic acid 0.148%. Cultivate strips in the field
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