Scientia Silvae Sinicae ›› 2006, Vol. 42 ›› Issue (12): 134-136.doi: 10.11707/j.1001-7488.20061224
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Wang Yue,Liu Yan
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Abstract:
A procedure was studied on cryopreservation of Photinia serrulata shoot-tips in vitro by vitrification. The excised shoot-tips which were cultured for 30 d, 1.5~2.0 mm long, were loaded with 60% PVS2 for 40 min at room temperature in effendoff tube, then were exposed to PVS2 at 0 ℃ for 50 min. Followed by changing the solution with fresh PVS2, the tubes were immersed into LN2 directly. After 24 h storage, the effendoff tubes were rapidly thawed in the water bath at 40 ℃, the shoot-tips were washed twice with 1.2 mol·L-1 sucrose solution for 10 min and transferred onto MS medium supplemented with 6-BA 2.0 mg·mL-1. The cultures were kept in dark for one week prior to exposure to the light. Survival rate of shoot-tips was 93.33% by TTC examination, and regeneration rate reached 41.67%.
Key words: Photinia serrulata, shoot-tips, vitrification, cryopreservation
Wang Yue;Liu Yan. Cryopreservation of Photinia serrulata Shoot-Tips by Vitrification[J]. Scientia Silvae Sinicae, 2006, 42(12): 134-136.
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