Biodiv Sci ›› 2018, Vol. 26 ›› Issue (4): 373-383.DOI: 10.17520/biods.2017337

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Potential value, status analysis, and protection strategy of wild kiwifruit genetic resources in the Yangtze River Basin

Yuguo Wang1,2,*(), Jie Yang1,2, Jiakuan Chen1,2   

  1. 1 Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, Shanghai 200438
    2 Department of Ecology and Evolutionary Biology, School of Life Sciences, Fudan University, Shanghai 200438
  • Received:2017-12-25 Accepted:2018-03-08 Online:2018-04-20 Published:2018-09-11
  • Contact: Wang Yuguo
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Abstract:

The Yangtze River Basin is key distribution area involved in the origin and evolution of kiwifruit as it possesses more important resources of wild kiwifruit species and populations of Actinidia chinensis-A. deliciosa species complex in the world. The seeds of kiwifruit were brought from Yichang, Hubei to Shanghai along the Yangtze River and reached New Zealand more than 100 years ago. Through cultivation and domestication, the initial seedlings gradually developed as a new fruit crop industry. In recent decades, great progress has been made on kiwifruit studies in China including genomic sequencing for diploid Actinidia chinensis cv. Hongyang, resequencing for interspecific relationships among the Actinidia species, molecular phylogeny and infrageneric classification of the genus Actinidia, and population genetic structure of certain species. However, more results are still needed to understand the origin, domestication and speciation of the kiwifruit species. Resource assessment on the base of the latest research is still lacking. It is of great importance to strengthen the protection and sustainable utilization of wild kiwifruit resources. Here we review the domestication history of cultivated kiwifruit, advances of systematics and classification in Actinidia, analyze the potential value and the present situation of wild kiwifruit resources in the Yangtze River Basin, and summarize distribution characteristics and threats to the endangered species of Actinidia in the basin. Finally, corresponding protection strategies for the existing problems are suggested, including the establishment of long-term protection mechanisms, the enhancement of basic scientific research and systematic evaluation of genetic resources, and the improvement of conservation standards of the germplasm resources for the sustainable utilization of wild kiwifruit resources.

Key words: kiwifruit, genetic resources, potential value, status analysis, protection strategy