摘要
以药剂浓度和熏蒸时间为处理进行了二因素四水平交叉试验。结果表明：以０．３３ｍｌ／ｋｇ／３ｈ处理小薯发芽率最高，且发芽势最强。由于不同品种对药剂作用反应程度不同，研究提出不同品种气体催芽可在０．１３～０．３３ｍｌ／ｋｇ／３～９ｈ的处理范围内选择使用。同时，为了明确药剂使用浓度超过０．５ｍｌ／ｋｇ时是否会造成小薯丧失发芽力，将熏蒸后未能发芽的小薯用３０ｐｐｍ的赤霉素浸泡２５ｍｉｎ处理，３品种均有９０％以上小薯发芽。表明在一定范围内（药剂浓度≤０．７３ｍｌ／ｋｇ，熏蒸时间≤１２ｈ），气体催芽可能抑制小薯发芽，但不会造成其发芽力丧失。
In order to study the suitable concentration and fumigation period of Rindit used for breaking the dormancy of minitubers,two factors,Rindit concentration and fumigation period,which include four levels respectively,were investigated.The planting materials were FavoritaKexin 4 and Hui2.The weight of minituber is 202g.The experiment showed that the minituber treated with 033ml/kg/3h had the highest germination percentage.Owing to different response of cultivars,we suggest the range of 013033ml/kg/39h. In addition,we also study if the minitubers will lost their capacity of germination when the Rindit concentration was over 05ml/kg.We treated the minitubers with 30ppm GA3 for 25 min,which were treated previously by over 05ml/kg Rindit and didn't sprout.More than 90% of them were noted to sprout.This experment showed that the minitubers could be inhibited to sprout but can't lost their capacity of germination if they were fumigated at the concentration of 073ml/kg for 12h.
出处
《马铃薯杂志》
1999年第1期13-16,共4页
Chinese Potato Journal
