Publications by authors named "Sang Heon Oh"
spp. are commonly associated with the root rot complex of soybean (). Previous surveys identified six common species from Manitoba, including , , , , , and .
View Article and Find Full Text PDFIn this note, the feasibility of initial alignment of a gyro-free inertial navigation system (GF-INS) is investigated. Initial roll and initial pitch are obtained using leveling of conventional INS since centripetal acceleration is very small. The equation for the initial heading cannot be used since the GF inertial measurement unit (IMU) cannot directly measure the Earth rate.
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- * This study identified and characterized multiple B-box genes in specific plant species, revealing that segmental duplications significantly contributed to gene family expansion and classification into five subgroups.
- * Analysis of expression profiles showed that many B-box genes respond to various abiotic stresses and hormones, suggesting they may serve as valuable genetic markers for plant development and stress tolerance.
Clubroot caused by is a severe disease of cruciferous crops that decreases crop quality and productivity. Several clubroot resistance-related quantitative trait loci and candidate genes have been identified. However, the underlying regulatory mechanism, the interrelationships among genes, and how genes are regulated remain unexplored.
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- Research focused on the genetic inheritance of clubroot resistance in Brassicaceae crops, specifically analyzing a double haploid population from resistant (09CR500) and susceptible (09CR501) lines.
- The clubroot resistance in "09CR500" was determined to be controlled by a single dominant gene, showing nearly equal segregation between resistant and susceptible plants.
- A specific genetic marker ("09CR.11390652") was found to effectively distinguish resistant phenotypes, making it valuable for breeding programs and the development of resilient crop varieties.
Reddish purple Chinese cabbage (RPCC) is a popular variety of (AA = 20). It is rich in anthocyanins, which have many health benefits. We detected novel anthocyanins including cyanidin 3-(feruloyl) diglucoside-5-(malonoyl) glucoside and pelargonidin 3-(caffeoyl) diglucoside-5-(malonoyl) glucoside in RPCC.
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- A major quantitative trait locus (QTL) linked to radish root cracking was identified for the first time, highlighting its significance in reducing yield and commercial value of the crop.
- The QTL 'RCr1' was consistently detected over three years and explained a notable percentage of variance (4.47-18.11%) in the root cracking trait.
- Two candidate genes, RsANNAT and RsCDPK, were discovered that are associated with calcium regulation, which may help improve tolerance to root cracking in radish cultivars.
The resistance gene analog (RGA)-based marker strategy is an effective supplement for current marker reservoir of radish disease-resistance breeding. In this study, we identified RGAs based on the conserved nucleotide-binding site (NBS) and S-receptor-like kinase (SRLK) domains. A total of 68 NBS-RGAs and 46 SRLK-RGAs were isolated from two FW-resistant radish inbred lines, B2 and YR31, and one susceptible line, YR15.
View Article and Find Full Text PDFQTLs and candidate gene markers associated with leaf morphological and color traits were identified in two immortalized populations of Brassica rapa, which will provide genetic information for marker-assisted breeding. Brassica rapa is an important leafy vegetable consumed worldwide and morphology is a key character for its breeding. To enhance genetic control, quantitative trait loci (QTLs) for leaf color and plant architecture were identified using two immortalized populations with replications of 2 and 4 years.
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