The Ozone Dynamics Investigation Nano-Satellite (ODIN) is a CubeSat design proposed by Chungnam National University as contribution to the CubeSat Competition 2019 sponsored by the Korean Aerospace Research Institute (KARI). The main objectives of ODIN are (1) to observe the polar ozone column density (latitude range of 60 to 80 in both hemispheres) and (2) to investigate the chemical dynamics between stratospheric ozone and ozone depleting substances (ODSs) through spectroscopy of the terrestrial atmosphere. For the operation of ODIN, a highly ecient power system designed for the specic orbit is required. We present the conceptual structural design of ODIN and an analysis of power generation in a sun synchronous orbit (SSO) using two dierent congurations of 3U solar panels (a deployed model and a non-deployed model). The deployed solar panel model generates 189.7 W through one day which consists of 14 orbit cycles, while the non-deployed solar panel model generates 152.6 W. Both models generate enough power for ODIN and the calculation suggests that the deployed solar panel model can generate slightly more power than the non-deployed solar panel model in a single orbit cycle. We eventually selected the non-deployed solar panel model for our design because of its robustness against vibration during the launch sequence and the capability of stable power generation through a whole day cycle.

Fusarium head blight (FHB) is the most important disease of wheat that may cause serious yield and quality losses and leads to harmful contamination of the grain with fungal toxins. Korean wheat cultivars showed much less resistant to FHB than Sumai3, which known as resistance to FHB, evaluated by spray inoculation in our companion report. Many DNA-marker studies, including sequence tagged site (STS) and simple sequence repeat (SSR) markers and qualitative trait loci (QTL) associated with FHB resistance have been identified and mapped on the specific chromosome, especially 3BS, by many previous studies. However, there was no application of DNA-markers to select FHB resistance lines in Korean wheat breeding programs. 3 SSR markers and 6 STS markers linked to major QTL on chromosome arms 3BS found in Sumai3 and its derivatives were used to screen FHB resistance in Korean wheat cultivars. All markers known to be most significant markers based on previous research (Liu and Anderson 2003). There was general lack of marker polymorphism for Korean wheat cultivars used in this study. However, STS3B-138 marker only showed the polymorphism in Korean wheat cultivars. Allele size of STS3B-138 is 355 bp in Sumai 3 and 12 of 24 cultivar showed this allele. The range in Type II resistance rating was 1-5 and average of these 12 cultivars have 355bp allele was grade 2.4. The most resistant cultivars under the 2 grade, Gobun, Jinpoom, Milseong and Namhae also showed 355bp allele. Therefore, These results provide potential for development of wheat cultivars with improved Fusarium head blight resistance through use of effective FHB screen methods and marker - assisted selection.

Fusarium head blight (FHB), also known as head scab of wheat causes serious yield losses and deteriorated grain and may also contaminate the grain with mycotoxins. Many researches have been conducted to minimize damage caused by FHB and to improve resistance to FHB in many countries. However, little information of FHB in Korean wheats is available. In this study, 23 Korean wheat cultivars and F8 population were evaluated FHB symptoms infected two types of inoculations, both spray and point inoculation. Grain properties of Korean wheat cultivars, including grain morphology, antioxidant activity and ion content, were also evaluated to elucidated the relationship to the degree of infection of FHB. Anbaek, Eunpa and Milsung showed lower degree of infection by spray inoculation than any other cultivars, in spite of higher infection degree than Sumai3, which have been known as resistant to FHB. The degree of infection by point inoculation of Milsung, Gobun and Olgeuru was comparable to that of Sumai3. Poly phenol oxidase activity and total polyphenol content negatively correlated with the degree of infection by spray inoculation (r = -0.388, r = -0.466* respectively). Roundness of grain positively correlated with the degree of infection by point inoculation (r = 0.419*). In F8 population of 234 lines derived from the cross between Sumai3 and Korean wheat cultivar, 33 lines (14.1%) showed lower degree of infection by spray inoculation than parental cultivars, although there was no line comparable resistance of FHB to Sumai3. Fourteen lines (6.0%) showed lower degree of infection by point inoculation than Sumai3 and 135 lines (57.6%) were comparable to Sumai3 and parental cultivars.