Effect of Low Temperature Storage on Seed Germination and Seedling Growth of Dragon Fruit  

作　　者：Yihao XING Dongqiang WEN Chuxian QIN Wenyan JIANG Zhijiang WU Xinguang QIN 

机构地区：[1]Germplasm Genebank,Guangxi Academy of Agricultural Sciences,Nanning 530007,China [2]Agro-Products Quality Safety and Testing Technology Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China [3]Horticulture Research Institute,Guangxi Academy of Agricultural Sciences/Nanning South Subtropical Fruit Tree Scientific Observation and Experiment Station,Ministry of Agriculture,Nanning 530007,China

出　　处：《Agricultural Biotechnology》2020年第6期73-78,共6页农业生物技术（英文版）

基　　金：Basic Operating Expenses of Guangxi Academy of Agricultural Sciences(GNK 2015YT98,GNK 2020YM21,GNK 2020YM20)。

摘　　要：In order to explore the best storage temperature and storage period of dragon fruit seeds,with the constant-humidity germplasm cold storage of Guangxi Academy of Agricultural Sciences as a platform and storage temperature as an environmental factor,the germination characteristics of dragon fruit seeds and seedling growth characteristics under low temperature storage(8,4,-1,-10℃)and room temperature storage(25-30℃)over time were explored.The results showed that with the extension of the storage time,the seed germination rates,germination index,healthy seedling rates,seedling heights and fresh weights of 10 seedlings of the three dragon fruit varieties showed basically the same trends,showing a downward trend.After 367 d of cold storage,the germination rate decreased from 100%to 92.33%-98.00%,and the room temperature treatments decreased to 54.00%-86.30%;and the healthy seedling rates of cold-stored seeds decreased from 96.33%-98.00%to 77.33%-97.3%,and the values of the room temperature treatments dropped to 12.00%-68.33%.The germination rates,germination index,healthy seedling rates and seedling heights of the three dragon fruit varieties stored at low temperatures were basically significantly higher than those of the room temperature treatments within 367 d of storage.The germination rates of the three varieties stored at 8℃had no significant differences from other low temperature treatments,but the germination index was significantly lower than other low temperature treatments at 367 d.It showed that low temperature storage at-10-8℃could significantly prolong the vigor and storage time of dragon fruit seeds.Considering cost and other factors,it is better to store dragon fruit seeds in a dry environment at 4℃.The seeds stored at 4℃for 1 year showed a germination rate maintained over 90%and a healthy seedling rate over 85%.

关 键 词：Low temperature storage Dragon fruit Seed germination SEEDLINGS GENEBANK 

分 类 号：S667.9[农业科学—果树学]