Search

Saxifraga Tourn. ex L. is rich in species diversity with about 440-500 species and broad distribution. The taxonomical issues of this genus have been continuously concerned by the botanists. Saxifraga has important ornamental and medicinal values. Some of European countries have made great efforts on the exploitation and utilization of its ornamental resources. China is one of the diversity centers of Saxifraga, but it has been lagged far behind Europe, USA and even Japan in exploitation and utilization on ornamental value of this genus. The world breeding work in Saxifraga started 150 years ago. By the end of 2022, the 1 692 names of cultivars had been on-line listed by The Saxifrage Society, but only one came from China. In this paper, the germplasm resources of Saxifraga, and progress on its classification and breeding are reviewed, and also the utilization of its ornamental resources is briefly introduced, which will provide an important reference for taxonomical research, breeding and application of this genus in China. The results are as follows:(1) Saxifraga is rich in germplasms, but many scientific issues remain in the evolutionary relationships of its subordinate systems, which require a systematic and in-depth investigation by integrating morphological and molecular biology methods.(2)The cultivars of this genus are mainly raised through cross-breeding and mutant selection, and the majority of cultivars are from the UK, Czech Republic, Germany, and the Netherlands.(3)The breeding of Saxifraga started very late in China, with only few cultivars from one breeding method. [ABSTRACT FROM AUTHOR]

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Polyspora Sweet are evergreen tree of Theaceae with 50 species, mainly distributed in South Asia and Southeast Asia. Polyspora have high ornamental value, can be used as landscape trees in tropical and subtropical regions. Some of them have edible and medicinal values. Based on the brief introduction of the germplasm resources and application of the genus Polyspora, the research progress of its systematic evolution and taxonomy, reproductive characteristics, physiological characteristics, ecological habits, seedling technology, chemical components and pharmacological activities were reviewed in detail. This review point out that in the future, we should expand the research scope and species of the genus, and strengthen the germplasm resources collection, phylogeny, genetic diversity and so on. We should pay more attention to the introduction, cultivation, and germplasm innovation of the genus, and fully explore its medicinal value, and carry out clinical research. This review paper will provide theoretical basis and reference for further research of Polyspora plants. [ABSTRACT FROM AUTHOR]