Two new varieties of hemp grown in Banna botanical garden of Chinese Academy of Sciences

After five years of efforts, two new varieties of hemp, mengma 6 and mengma 10, jointly selected by Xishuangbanna Tropical Botanical Garden of Chinese Academy of Sciences and Xishuangbanna Agricultural Science Research Institute, have recently passed the recognition of Xishuangbanna variety Approval Committee According to the column mark engineer of Banna botanical garden, hemp is an ancient economic crop, which is usually dioecious and its offspring is heterozygote, with complex genetic basis and wide distribution With the development of science and technology, hemp with low tetrahydrocannabinol content has become an important resource in textile, paper, food, medicine, biodiesel and other industries, which has an important strategic significance for the sustainable development of national economy and social progress In the development of Banna's hemp industry, Yunma No 1, the former main variety, has strong photosensitivity, which is only suitable for planting in summer in Banna and not suitable for planting in spring Its technology maturity is in July and August, which is rainy in Banna, and is not conducive to the drying and harvesting of hemp skin In order to solve the problem of variety defect and single variety in the development of hemp industry as soon as possible, researchers selected two traditional breeding methods of systematic breeding and hybrid breeding, and selected new varieties mengma 6 and mengma 10 According to the expert group for variety approval, mengma No 6 and mengma No 10 have the characteristics of long growth period, high output of hemp skin, good fiber quality and high industrial availability compared with the control variety Yunma No 1 It is agreed that the two new varieties have passed the identification "The two new varieties are non-toxic, slow sensitive and late maturing The growth period is 24-55 days longer than the control, and the process maturity is extended to the end of August, avoiding the local rainy season, overcoming the difficulties that are not conducive to harvest and airing, greatly facilitating the farmers to harvest and airing, reducing the yield loss, and having a high promotion and application value." Duan ZhuBiao told China Science Daily that these two new varieties are the first recognized hemp varieties in Banna botanical garden and Xishuangbanna They are another important achievement of cultivating varieties with independent intellectual property rights in Banna botanical garden They are expected to be widely promoted and create huge economic benefits as the main products of hemp in China.