Anhui Agricultural Science Bulletin >
2025 , Vol. 31 >Issue 18: 34 - 37
DOI: https://doi.org/10.16377/j.cnki.issn1007-7731.2025.18.009
Potato stem tip virus-free tissue culture technique
Received date: 2025-02-05
Online published: 2025-09-28
The virus-free tissue culture technology using potato stem tips is able to restore variety characteristics and improve potato yield and quality, making it one of the key biotechnologies in seed potato production. The entire process of virus-free tissue culture technology using potato stem tips was systematically elaborated, and its common problems along with control strategies were summarized. The technical procedure involved pretreatment of explants, shoot tip dissection, primary culture of plantlets, virus detection, and in vitro propagation of plantlets. During the primary culture stage, the explants were sterilized and pretreated, and then cultured in a specific medium to induce the differentiation of apical meristems into plantlets. The obtained primary plantlets were subjected to virus detection using serological and molecular biological methods. After confirming the absence of viruses, the plantlets were transferred to propagation and strengthening media for multiplication. 3 major issues encountered during the tissue culture process were contamination, vitrification, and browning. Contamination, caused by bacteria, fungi, or endophytes, was prevented through strict aseptic techniques, environmental sterilization, and the addition of antibiotics or bacteriostatic agents to the culture medium. Vitrified plantlets, characterized by a translucent and fragile appearance, were primarily induced by unsuitable culture conditions or excessive subculturing, and could be mitigated by adjusting light and temperature conditions, regulating hormone concentrations, and incorporating dark culture periods. Browning, a phenomenon where wounded explants secreted brown substances leading to death, was commonly suppressed by adding anti-browning agents such as sodium thiosulfate. This article provides a reference for the production of virus-free seed potatoes
Key words: potato; virus-free tissue culture; virus detection; biotechnology
LI Yajun , SHI Guangcheng , LI Li , LI Bo , GAO Panpan , FAN Fenfen , ZHANG Xueting , HU Nana . Potato stem tip virus-free tissue culture technique[J]. Anhui Agricultural Science Bulletin, 2025 , 31(18) : 34 -37 . DOI: 10.16377/j.cnki.issn1007-7731.2025.18.009
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