The chromosome ploidy of kiwifruit is complex, with intertaxon ploidy variation having so far been detected in at least 13 Actinidia species (2n = 2x = 58, 2x, 3x, 4x, 5x, 6x, 7x, 8x, etc.). The total output of cultivated kiwifruit in the world is about 3 million tons, of which China accounts for about half. In recent years, the value of kiwifruit in the international market is becoming more and more prominent. Kiwifruit is not only rich in vitamin C and minerals but also has medicinal and ornamental value. It is one of the best examples of the successful domestication and commercialization of crops in the early 20th century. Kiwifruit is a perennial, dioecious economic fruit that is native to China. These results can also provide the scientific basis for the protection and sustainable utilization of kiwifruit wild resources. chinensis across its distribution range, contributing to a better understanding of its germplasm resources. This study provides an extensive overview of tetraploid A. The results also revealed that potentially suitable areas of tetraploids will likely be gradually lost and the habitat will likely be increasingly fragmented in the future. chinensis can be explained by an isolation-by-distance model. chinensis have high levels of genetic diversity and that there are distinct eastern and western genetic clusters. The results indicated that the polyploid populations of A. chinensis estimated under the current climate and predicted for the future climate was generated with ecological niche modeling (ENM). The potential suitable distribution of tetraploid A. chinensis populations using simple sequence repeat (SSR) molecular markers. We evaluated the genetic diversity and structure of 24 A. Understanding genetic diversity and structure in natural populations and their suitable habitat response to environmental changes is critical for the protection and utilization of germplasm resources.

Genodive format