Introduction and utilization of sugarcane germplasm resources in Guangxi in the past 40 years

【Objective】In this study, the utilization of sugarcane germplasm resources introduced in Guangxi in the past 40 years was analyzed, which provided a reference for improving the utilization efficiency of sugarcane introduction and promoting the healthy and sustainable development of sugarcane industry.【Method】Based on the statistics of sugarcane germplasm resources introduced from 1982 to 2020 in Guangxi, this paper analyzed the direct utilization, breeding utilization, application and research utilization of the introduced germplasm resources, summarized the problems existing in the process of introduction and put forward some suggestions.【Result】During 1982 to 2020, Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences introduced 1044 sugarcane germplasms(included 238 tassels) from more than 20 countries and regions as well as other provinces(cities) in China, among them, 751 sugarcane germplasm resources(included 26 tassels) were introduced since 1993.A total of 2771 hybrid combinations were allocated based on introduced sugarcane germplasms resources, 43 clones entered regional trails contained the introduced germplasm resources.Among the 58 GT sugarcane varieties developed by Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, 40 varieties contained introduced germplasm resources, among which CP series from America accounted for 37.9% and ROC series from Taiwan, China accounted for 34.5%.CP series and ROC series sugarcane germplasm resources play a very important role in sugarcane breeding in Guangxi.The introduction of sugarcane germplasm resources in disease resistance breeding and molecular breeding has gradually carried out research.At present, there are some problems in the introduction of sugarcane in Guangxi:(1) the introduction of sugarcane germplasm resources had great problems in adaptability;(2) the introduction of excellent sugarcane germplasm resources in other countries or regions might bring the risk of new diseases and insect pests, and increase the risks of safety cultivation of sugarcane industry;(3) the introduced germplasm resources were not fully shared among domestic breeding units.【Suggestion】Strengthen the introduction of excellent sugarcane germplasm resources, standardize the introduction procedure of sugarcane, strictly observe quarantine rules for introduction, and pay attention to the construction and sharing of the database of introduced planting resources.