Articles
Development and application of the propagation system of specific-virus-free plants of passionfruit in Taiwan
Article number
1378_44
Pages
333 – 344
Language
English
Abstract
Passionfruit (Passiflora spp.) is known as the King of Juices and is a fruit tree with high economic value with multiple utilization values.
In Taiwan, the cultivar of passionfruit Tainung No.1 (TN1) released from Taiwan Agricultural Research Institute in 1982, has the characteristics of self-compatibility and good flavor for both fresh use and processing.
Moreover, grafted seedlings can maintain stable horticultural traits as a commercial planting.
The grafted seedlings of TN1 passionfruit produced in Taiwan not only supply domestic demand but are also exported to Southeast Asian countries, and now the TN1 is the main cultivar of passionfruit in Asia.
The particular one-year cultivation technology of passionfruit in Taiwan is characterized by the annual replacement of healthy grafted plants throughout the field; this technology effectively controls the viral diseases, ensures the fruit harvest, and creates economic benefits for the passionfruit seedling industry in Taiwan.
Passionfruit is susceptible to viruses, fungi, and pests during the growing seasons; in particular, the woodiness viruses will cause lignification or deformity on fruits and reduce fruit juice rate and flavor, and thus cause a severely reduced quality and yield.
To ensure the quality and competitiveness of Taiwanese passionfruit seedlings, a complete production process of healthy plants without specific viruses has been established.
The technologies include: 1) virus detection technology that can monitor at least seven major passionfruit viruses in the Asian region; 2) broad-spectrum detection techniques and sampling methods for efficient detection; 3) differential detection methods to identify the respective passionfruit viruses in Taiwan and other regions; 4) the certification system of healthy passionfruit seedlings established by the government, which can control the health status of grafted seedlings.
Current production system of healthy passionfruit seedlings and annual renewal of plants for field cultivation are the key technologies for the sustainable development of Taiwans passionfruit industry.
In Taiwan, the cultivar of passionfruit Tainung No.1 (TN1) released from Taiwan Agricultural Research Institute in 1982, has the characteristics of self-compatibility and good flavor for both fresh use and processing.
Moreover, grafted seedlings can maintain stable horticultural traits as a commercial planting.
The grafted seedlings of TN1 passionfruit produced in Taiwan not only supply domestic demand but are also exported to Southeast Asian countries, and now the TN1 is the main cultivar of passionfruit in Asia.
The particular one-year cultivation technology of passionfruit in Taiwan is characterized by the annual replacement of healthy grafted plants throughout the field; this technology effectively controls the viral diseases, ensures the fruit harvest, and creates economic benefits for the passionfruit seedling industry in Taiwan.
Passionfruit is susceptible to viruses, fungi, and pests during the growing seasons; in particular, the woodiness viruses will cause lignification or deformity on fruits and reduce fruit juice rate and flavor, and thus cause a severely reduced quality and yield.
To ensure the quality and competitiveness of Taiwanese passionfruit seedlings, a complete production process of healthy plants without specific viruses has been established.
The technologies include: 1) virus detection technology that can monitor at least seven major passionfruit viruses in the Asian region; 2) broad-spectrum detection techniques and sampling methods for efficient detection; 3) differential detection methods to identify the respective passionfruit viruses in Taiwan and other regions; 4) the certification system of healthy passionfruit seedlings established by the government, which can control the health status of grafted seedlings.
Current production system of healthy passionfruit seedlings and annual renewal of plants for field cultivation are the key technologies for the sustainable development of Taiwans passionfruit industry.
Authors
Chin-Chih Chen, Wen-Li Lee, Chih-Cheng Hsu, Ying-Huey Cheng
Keywords
passionfruit (Passiflora spp.), virus diseases, healthy grafted seedlings, broad-spectrum detection
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