Trichosanthes sunhangii D.G.Zhang, Z.M.Li, Qun Liu & T.Deng, a new species of Cucurbitaceae, is described and illustrated. It was collected in Shennongjia Forestry District, Hubei province, east-central China. T. sunhangii is morphologically similar to T. kirilowii Maxim. and T. rosthornii Harms, but can be easily distinguished from them by its bracts, tendrils and fruits. Phylogenetic analyses based on three DNA barcode markers (ITS, matK and rpl20-rps12) indicated that two accessions of T. sunhangii were grouped together (PP=1.00, BP=100 and LP=100) in Sect. Foliobracteola.
At the turn of the new century,there have been waves of educational reform around the world.The interweaving of theories and schools of thought has emerged a magnificent prospect.As a core area in education,research on curriculum and instruction has also experienced ever-advancing changes.This paper attempts to portray a picture of the context and development of curriculum and instruction research in Hong Kong during the last twenty years from the perspectives of scholars from Hong Kong and the Chinese Mainland.The paper first outlines the efforts arising from the exchange and development of curriculum and instruction research Cross Straits.This is followed by a synthesis of the exploration and research on curriculum and instruction by scholars from Hong Kong and the Chinese Mainland based on the search of Keyword such as curriculum reform,curriculum implementation,teacher education,subject education and higher education.Finally,the paper puts forward some earnest expectations and practical suggestions for curriculum and instruction research Cross Straits.
A new species Sinosenecio yangii D.G. Zhang & Q. Zhou (Asteraceae, Senecioneae) from Guizhou Province, China, is described and illustrated based on its morphological characteristics and molecular evidence. It closely resembles S. confervifer and S. guangxiensis , the former in the scapigerous habit and smooth and glabrous achene surface, the latter in the calyculate involucre and purple abaxial leaf surface, and both in the shape and indumentum of leaf lamina, but differs markedly from the latter two in having fewer capitula and epappose achenes. Phylogenetic analysis based on nrITS and ndhC-trnV sequences shows that this new species belongs to the S. latouchei clade and is sister to S. guangxiensis with moderate support.
Abstract Background Dactylicapnos is a climbing herbaceous vine, distributed from the Himalayas to southwestern China, and some of the species have important medicinal values. However, the chloroplast genomes of Dactylicapnos have never been investigated. In this study, chloroplast genomes of seven Dactylicapnos species covering all three sections and one informal group of Dactylicapnos were sequenced and assembled, and the detailed comparative analyses of the chloroplast genome structure were provided for the first time. Results The results showed that the chloroplast genomes of Dactylicapnos have a typical quadripartite structure with lengths from 172,344 bp to 176,370 bp, encoding a total of 133–140 genes, containing 88–94 protein-coding genes, 8 rRNAs and 37–39 tRNAs. 31 codons were identified as relative synonymous codon usage values greater than one in the chloroplast genome of Dactylicapnos genus based on 80 protein-coding genes. The results of the phylogenetic analysis showed that seven Dactylicapnos species can be divided into three main categories. Phylogenetic analysis revealed that seven species form three major clades which should be treated as three sections. Conclusions This study provides the initial report of the chloroplast genomes of Dactylicapnos , their structural variation, comparative genomic and phylogenetic analysis for the first time. The results provide important genetic information for development of medical resources, species identification, infrageneric classification and diversification of Dactylicapnos .
Understanding the pattern of species extinction risk is key to biodiversity conservation. Previous studies showed extinction risk correlates strongly with taxon species richness. However, there is no consistent conclusion to this hypothesis, and patterns differ among different taxonomic groups. Here, we collated lists of vascular plant and terrestrial vertebrate species information on their threatened status in Yunnan Province and performed the first systematical analysis to test the relationship between the proportion of threatened or extinct species and species richness at the family-level of the two above taxa in Yunnan Province, China. We found that extinction risk was not randomly distributed among families and the estimated extinction risk was higher among closer phylogenetic families than expected by chance. Moreover, there were significant negative correlations between extinction risk and family size in vascular plants and terrestrial vertebrates. Our results suggest that family size is a good predictor of extinction risk and extinction risk is related to evolutionary history at family-level among vascular plants and terrestrial vertebrates in Yunnan.
Abstract Previous research has identified various internal and external factors that predict teachers' technology adoption. Limited studies have explored how these internal and external factors interplay to determine different types of technology use. This study used the survey responses of 280 English as foreign language (EFL) teachers to examine how two key external factors (ie, school culture and professional development) interact with the two constitutive internal components (ie, knowledge/skill and belief) to determine three types of technology use in teaching and learning (ie, technology for content delivery, technology for learning enrichment and technology for transformed education towards self‐directed learning). It identified the salience of school culture, professional development and TPACK over teaching and learning beliefs in determining technology use. It further revealed that these factors influenced the three types of technology use differently. The findings suggest a differentiated approach towards researching and supporting teacher technology adoption. Practitioner notes What is already known about the topic Belief factors (Beliefs about teaching), knowledge factors (TPACK) and contextual factors (school culture and professional development) are significant predictors of teacher technology adoption. What this paper adds When examined together, school culture, professional development and TPACK were the more significant predictors of in‐service EFL teachers' technology integration, and the contributions of the belief systems were minimal. The interactions of these factors vary for different types of teacher technology use. Implications for practice and/or policy Need differentiated considerations in supporting different types of teacher technology use. A favourable school culture is instrumental to teachers' technology use for content delivery and for supporting students' self‐directed learning. TPACK is most critical to the use of technology for learning enrichment.
Abstract A new species of Papaveraceae, Corydalis sunhangii , in the section Trachycarpae , is described and illustrated from Nyingchi City, Xizang, China. The new species has some resemblance to Corydalis kingdonis , but differs by radical leaves prominent, usually several, blade tripinnate (vs. insignificant, few, blade bi‐ to triternate); cauline leaf usually one, much smaller than radical leaves, usually situated in lower half of stem (vs. usually two, larger than radical leaves, concentrated in upper third of stem); racemes densely 13–35‐flowered (vs. rather lax, 4–11‐flowered); claw of lower petal shallowly saccate (vs. very prominently and deeply saccate); capsule oblong, with raised lines of dense papillae (vs. broadly obovoid, smooth). Phylogenetic analysis, based on 68 protein‐coding plastid genes of 49 samples, shows that C. sunhangii is not closely related to any hitherto described species, which is consistent with our morphological analysis.
'/%3e%3cuse xlink:href='%23a' transform='rotate(23.036 .093 25.536)'/%3e%3cuse xlink:href='%23a' transform='rotate(45.87 1.273 16.18)'/%3e%3cuse xlink:href='%23a' transform='rotate(69.945 .996 12.078)'/%3e%3cuse xlink:href='%23a' transform='rotate(20.66 -19.689 31.932)'/%3e%3c/svg%3e)
'/%3e%3cuse xlink:href='%23a' transform='rotate(144 450 300)'/%3e%3cuse xlink:href='%23a' transform='rotate(216 450 300)'/%3e%3cuse xlink:href='%23a' transform='rotate(288 450 300)'/%3e%3c/svg%3e)