Dissection of seed development of Gastrodia elata at different temperatures / 中国中药杂志

The study is aimed to create seed materials and dissect the molecular mechanism of sexual propagation of Gastrodia elata. In this research, thirteen characteristics of flowers, flower stem, fruits, seeds and embryo of G.elata f. glauca and G.elata f. elata after bolting at room temperature(RT) and constant temperature(CT, 22 ℃) were determined. It was found that the constant temperature condition could prolong the bolting duration of G.elata and increased the number of flowers, while the variety of G.elata only affected the bolting duration, but had no effect on the number of flowers, and the G.elata f. elata was more likely to bolting than the G.elata f. glauca. The variety of G.elata was the main factor affecting the time of dehiscent fruit of G.elata, the temperature was the main factor affecting the fruits number and fruits diameter, and the constant temperature was more conducive to the fruits shape of G.elata than the room temperature. There was no significant difference in seed phenotype of G.elata varieties, but the seed embryo of G.elata seeds cultivated at constant temperature was fuller than that of G.elata cultivated at room temperature, and temperature had less influence on the seed phenotype of G.elata. But it was interesting to find that temperature and varieties had greater influence on the seed embryo of G.elata, constant temperature cultivation was more conducive to the formation of seed embryo of G.elata, and more the seed embryo of G.elata f. elata was easier to form than the seed embryo of G.elata f. glauca. However, the development of seeds and embryos of G.elata was significantly affected, and the development of seeds and embryos of G.elata f. glauca was more sensitive to temperature than G.elata f. elata. The research suggested that it is advisable for G.elata to produce seed materials by bolting at constant temperature(22 ℃).

Ecological benefits of Gastrodia elata-Phallus impudicus sequential planting pattern / 中国中药杂志

Gastrodia elata is a kind of precious traditional Chinese medicine. In the process of cultivation of G. elata, due to the influence of continuous cropping obstacles and other factors, the fungus materials and land that have been planted with G. elata are often abandoned, resulting in a great waste of resources. Based on the planting characteristics of G. elata and Phallus impudicus and the previous research experience in ecological agriculture, this paper analyzed the ecological adaptability characteristics of G. elata and P. impudicus, and summarized the key techniques of the G. elata-P. impudicus sequential planting pattern. Keeping track of the planting area, fungus-growing materials consumption and market sales of G. elata-P. impudicus sequential planting pattern, the ecological benefits of G. elata-P. impudicus sequential planting pattern from the aspects of utilization rate of fungus-growing materials were analyzed, the value of land resources per unit area, ecological environmental protection, labor cost and economic benefits were consi-dered. The technical principle of G. elata-P. impudicus sequential planting pattern was expounded according to their ecological habit, the season of harvest and planting, the difference of composition of fungus-growing materials, and the microbial ecology. The sequential planting pattern of G. elata-P. impudicus not only realized the double production of medicinal materials and edible fungi, reduced the waste of old fungus-growing materials, but also transformed the energy from nutrition-supplied fungi to edible and medicinal fungi, which guaranteed the ecological recycling and utilization of G. elata in the process of cultivation.