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May Thinn Khaing,Hyo Jin Jung,Tae-Ho Han 한국화훼학회 2018 화훼연구 Vol.26 No.3
Micropropagation studies of two Hydrangea. macrophylla cultivars, ‘Blaumeise’ and ‘Vanilla Sky’, were performed by tissue culture. The results showed that supplementing B5 medium with different concentrations of 6-Benzylaminopurine (BA) (0.0, 0.5, 1.0, 1.5, and 2.0 mgL-1) significantly increased the number of shoots and leaves per explant compared with the control in both cultivars. In ‘Blaumeise’, 1.0 mgL-1 of BA was the concentration that achieved the highest number of shoots and leaves, i.e., 12.5 and 93.25, respectively. In ‘Vanilla Sky’ 1.5 mgL-1 of BA resulted in the highest numbers of shoots (4.25) and leaves (29). The longest shoot in both ‘Blaumeise’ (2.10 cm) and ‘Vanilla Sky’ (1.18 cm) was obtained at 0.0 mg·L-1 of BA. The highest number of roots in both ‘Blaumeise’ (11) and ‘Vanilla Sky’ (6.5) were obtained with indole-3-butyric acid (IBA) 1.0 mgL-1 of IBA.
May Thinn Khaing,정효진,한태호 全南大學校 農業科學技術硏究所 2016 農業科學技術硏究 Vol.53 No.-
In the genus Hydrangea, H. macrophylla is the most popular species because of its large and brightly colored inflorescences. Hydrangea breeders have been focused on the development of new cultivars for sale as flowering potted plants. Breeding efforts in hydrangea have involved interspecific and intergeneric crosses attempted to introduce useful characteristics. In hydrangea, incongruity prevents interspecific crosses within the genus. In vitro methods allow developing an integrated procedure for overcoming fertilization barriers.
Characterization of Hydrangea Accessions Based on Morphological and Molecular Markers
May Thinn Khaing,Hyo Jin Jung,Jong Bo Kim,Tae-Ho Han 한국원예학회 2018 원예과학기술지 Vol.36 No.4
Hydrangea (Hydrangea spp.) is commonly cultivated as an ornamental plant for its attractive characteristics. While numerous hydrangea cultivars are available as genetic resources, they cannot be utilized effectively for breeding purposes because of a lack of information on their genetic relationship and breeding compatibility. In this study, genetic relationships within a collection of 34 accessions consisting of 4 species of hydrangea (H. macrophylla, H. paniculata, H. serrata, and H. arborescens) were evaluated using random amplified polymorphic DNA (RAPD) markers. The hydrangea cultivars were maintained in the greenhouse at Chonnam National University. The dendogram of the genetic relationship was subjected to a clustering analysis in the PAST program using the unweighted pair group method with arithmetic mean (UPGMA) method to estimate the genetic distances and relatedness among the species. Based on RAPD analysis, H. macrophylla was separated into two major groups with high levels of genetic similarity among the cultivars. H. paniculata accessions were classified into one major group with ‘Womseuredeu’ genetically distant from the other cultivars. H. serrata and H. arborescens were divided into two separated groups. The dendrogram suggests that H. macrophylla and H. serrata are genetically similar therefore the chance of hybridization between this species may be greater than that between more distantly related species. The present study provides useful information for the breeding of hydrangea cultivars.
Hyun A Jang,May Moe Oo,Dae-Gyu Kim,Ha-Yeon Yoon,Mi-Reu Kim,Kyo-Sang Lee,Khaing Shwe Zin Thinn,Saima Arif,Jia Guo Geng,Ji-Young Min,Dong Jun Lim,허윤영,오상근 한국원예학회 2020 Horticulture, Environment, and Biotechnology Vol.61 No.5
Grape ripe rot is a fungal disease, which is almost inextinguishable particularly before and after harvest in most vineyards. The management of this disease largely depends on the breeding of resistant varieties. Thus, the search for resistant varietiesshould parallel the molecular analysis of the markers associated with disease resistance. Here, we tested the leaf inoculationassay of Colletotrichum acutatum and C. gloeosporioides by inoculating them into 350 grapevine varieties. As a resultof the phenotypes common to both species, 119 varieties (34%) were classifi ed as resistant. Consequently, we discoveredthe locus with nucleotide-binding sites and carboxyterminal leucine-rich repeat regions ( NBS-LRR ) associated with graperipe rot resistance through genotyping-by-sequencing and genome-wide association study. Ultimately, we identifi ed theVitis vinifera Colletotrichum resistance protein ( VvCRP ) markers from chromosome 3, which belongs to the CC-NBS-LRRtype, as disease-resistant proteins. These markers were verifi ed as the melting peak, and their chromatograms of nucleotidesequences were visualized in each single nucleotide polymorphism (SNP) loci. All the SNP markers diff erentiated successfullythe resistant from the susceptible cultivars. Interestingly, we also found that a resistant cultivar named Bailey AlicanteA has a heterozygous genotype, substantiating its potential usefulness for crops such as grapevine with many hybrids. Altogether,our results indicate that VvCRP markers can be utilized to distinguish grape ripe rot-resistant cultivars, particularlyin crossbreeding populations.