甘薯薯块体积大,含水多、皮薄,易破皮受伤感染病害,对贮藏期温度要求较严,不能象其他作物种子采用控制温、湿度建立基因库进行长期保存。过去沿用田间栽植与室内贮藏相结合的方法保存。它的弊病很多:首先,种植需要一定的土地及人力、物力进行管理;其次,大田栽培易受病虫害和自然灾害的袭击;第三,许多品种在一起种植能增加病毒感染机会,以致扩大毒源;第四,由于品种繁多,在种植和收贮过程中易造成人为机械混杂;第五,品种交换中若不注意检疫易造成病虫害的蔓延。由于长期采用原有的保存法必将引起良种变劣,产量降低。为此,二年来我们对应用组织培养保存甘薯品种资源和良种繁育做了一些探索。现介绍 Sweet potato tubers are bulky, water-rich, thin and easy to be broken. They have strict requirements on temperature during storage and can not be used for long-term storage of gene pools like other crop seeds by controlling temperature and humidity. Past use of field planting and indoor storage methods combined preservation. First of all, planting requires some land and manpower and material resources to manage it. Second, field cultivation is vulnerable to pests, diseases and natural disasters. Third, planting many species together can increase the chances of a virus infection and increase the source of the virus Fourth, due to the wide range of varieties, it is easy to cause artificial and mechanical mixing during planting and storage and storage. Fifthly, if not paying attention to the quarantine inspection during the exchange of varieties, it will easily lead to the spread of pests and diseases. Due to the long-term use of the original preservation method will inevitably lead to inferior varieties, reduce production. For this reason, in the past two years, we have made some explorations on the application of tissue culture to conserve sweet potato varieties and seed breeding. Now introduced