Abstract
Viral diseases constitute a major constraint to high yield and high quality production of potato. Potato leafroll virus (PLRV) and Potato virus Y (PVY) are among the most damaging potato viruses and are prevalent in most potato growing areas. In the present study, attempts were made to eliminate PLRV and PVY by three cryogenic protocols, i.e., encapsulation-dehydration, encapsulation-vitrification and droplet. Results showed that both PLRV and PVY could be efficiently eliminated by cryogenic treatments with 83–86% and 91–95% of frequencies of virus-free plantlets obtained for the former and latter, respectively. Frequencies of virus-free plantlets produced by cryogenic treatments were higher than those by meristem culture (56% for PLRV and 62% for PVY) and thermotherapy (50% for PLRV and 65% for PVY), and similar to those by thermotherapy followed by meristem culture (90% for PLRV and 93% for PVY). Survival (75–85%) and regrowth (83–89%) from cryo-treated shoot tips were higher than those from meristem culture (50–55%) and thermotherapy followed by meristem culture (40–50%), but similar to those from thermotherapy (80–87%). The morphology of the plantlets regenerated from cryo-treated shoot tips was similar to that of non-treated plantlets. Thus, cryotherapy would provide an alternative method for efficient elimination of potato viruses, and can be simultaneously used for long-term storage of potato germplasm and for production of virus-free plants.
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Abbreviations
- BSV:
-
Banana streak virus
- BAP:
-
Benzylaminopurine
- CMV:
-
Cucumber mosaic virus
- DMSO:
-
Dimethylsulfoxide
- GA3 :
-
Gibberellic acid 3`
- GVA:
-
Grapevine virus A
- LSD:
-
Least significant difference
- LN:
-
Liquid nitrogen
- MS:
-
Murashige and Skoog medium
- PVS2:
-
Plant vitrification solution 2
- PPV:
-
Plum Pox Potyvirus
- PLRV:
-
Potato leafroll virus
- PVY:
-
Potato virus Y
- RAPD:
-
Random amplified polymorphic DNA
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Wang, Q., Liu, Y., Xie, Y. et al. Cryotherapy of Potato Shoot Tips for Efficient Elimination of Potato Leafroll Virus (PLRV) and Potato Virus Y (PVY). Potato Res. 49, 119–129 (2006). https://doi.org/10.1007/s11540-006-9011-4
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DOI: https://doi.org/10.1007/s11540-006-9011-4