T/WFZYC 01-2024 Geographical Indication Wufeng Tianma Seed and Seedling Breeding Technical Specifications

Scope

Scope: This document specifies the environmental requirements for the production of Gastrodia seeds and seedlings in the Wufeng area, including sexual reproduction techniques, asexual reproduction techniques, seed collection, seedling storage, and file management. This document applies to the production of Gastrodia seeds and seedlings in Wufeng Tujia Autonomous County, Hubei Province. The production of Gastrodia seeds and seedlings shall comply with the provisions of the "Seed Law of the People's Republic of China" and related policies and regulations. Main technical content: 3  Terms and Definitions 3.1 Gastrodia Gastrodia elata Bl. is a perennial herb that symbiotically grows with fungi (Fungi), without roots or green leaves. It is a heterotrophic orchid species of the Gastrodia genus. Based on characteristics such as the color of flowers and flower stems, the shape of tubers, and the water content of tubers, Gastrodia in China is divided into four types: original mutants - red Gastrodia (G. elata Bl. f. elata), green Gastrodia (G. elata Bl. f. viridis Maki-no), black Gastrodia (G. elata Bl. f. glauca S. Show), and yellow Gastrodia (G. elata Bl. f. flavida S. Chow). The Gastrodia cultivated in Wufeng Tujia Autonomous County, Hubei Province mainly includes red Gastrodia, black Gastrodia, and hybrids of black and red Gastrodia. 3.2 Seed Gastrodia seeds are produced through sexual reproduction in the capsules formed during flowering and develop to maturity. Gastrodia seeds are small and powder-like, consisting only of the embryo and seed coat without an endosperm. The average length is 670 μm, and the diameter at the widest point is 12 μm. 3.3 Gastrodia Tuber The underground stems of Gastrodia used for asexual reproduction are collectively called tubers. Based on the morphology, size, and developmental stages of Gastrodia tubers in cultivation, they are sequentially divided into protocorms, nutritive stems, juvenile tubers, immature tubers, and mat

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