%A WANG Ai-Ping, YIN Ming-Hua, HONG Sen-Rong %T Cryopreservation of in vitroGrown Shoot Tips of Red Bud Taro by Encapsulation-Vitrification %0 Journal Article %D 2015 %J Plant Diversity %R 10.7677/ynzwyj201515067 %P 801-812 %V 37 %N 06 %U {https://journal.kib.ac.cn/CN/abstract/article_33472.shtml} %8 2015-11-25 %X
A simple procedure for cryopreservation of in vitrogrown shoot tips of red bud taro (Colocasia esculenta L. Schott var. cormosus‘Hongyayu’) by encapsulationvitrification is investigated. Shoot tips were excised from 8weekold stock shoots and encapsulated into alginategel beads. Encapsulated shoot tips were precultured in liquid MS medium supplemented with 35mg·L-1 6BA, 05mg·L-1 IBA, 01mg·L-1 GA3 and 03mol·L-1 sucrose for 24h, then they were loaded with a mixture of 2mol·L-1 glycerol plus 04mol·L-1 sucrose for 30min at 25℃. After dehydration with PVS2 at 25℃ for 20min, the encapsulated and dehydrated shoot tips were plunged directly into liquid nitrogen. After rapidly rewarming in a 40℃ water bath for 3min, PVS2 was drained from the cryotubes and replaced third with liquid MS medium supplemented with 35mg·L-1 6BA, 05mg·L-1 IBA, 01mg·L-1 GA3 and 12mol·L-1 sucrose and each kept for 10min at 25℃and then postcultured on solidified MS medium supplemented with 35mg·L-1 6BA, 05mg·L-1 IBA and 01mg·L-1 GA3 in the dark for 3 days and then transferred to the light conditions. The average survival rate amounted to about 80%. Plantlets regenerated from cryopreserved shoot tips were morphologically uniform. This encapsulation vitrification procedure promises to become a routine method for the cryopreservation of shoot tips of Chinese genuine red bud taro.