The F₁ hybrid rapeseed (Brassica napus L.) exploits heterosis to deliver greater yield, stability, and uniformity than open-pollinated cultivars, making it suitable for large- scale cultivation. In Korea, cultivation is shifting from landscape and apiculture to expanding edible oil production and increasing the demand for paddy field-adapted hybrids. Using Mokpo-CGMS as the female and the pollen parent ‘09003-B-126-2-1-3,’ we developed the breeding line ‘Dangyo 80,’ which, after multi-environment evaluations of yield and oil quality against ‘Sunmang,’ was selected as a new cultivar ‘Areum. ’ ‘Areum’ exhibits growth habit type IV, yellow flowers, and a red seed coat. Its flowering and maturity times are comparable to ‘Sunmang. ’ Major growth indices did not differ significantly among cultivars; however, while ‘Areum’ showed slightly greater lodging susceptibility, it displayed higher resistance to Sclerotinia stem rot. Notably, in paddy fields ‘Areum’ achieved a higher plant density per square meter than ‘Sunmang’ which produced a 31% yield increase. In fatty acid composition, ‘Areum’ had higher oleic acid content (65% vs. 60%) and lower erucic acid (0.95% vs. 1.35%) than ‘Sunmang,’ indicating improved suitability for high-quality edible rapeseed oil production (Registration No. 9755).

‘K-Ol2’ is a high-oil, high-oleic acid peanut (Arachis hypogaea L.) variety developed by the National Institute of Crop and Food Science and released in 2022. This variety was derived through pedigree selection from a single cross between the variety ‘Jaseon’ and the high-oleate elite line ‘YG377’. High-oleate lines were selected in the F₃ generation using Near-Infrared Spectrophotometry and gas chromatography. ‘K-Ol2’ exhibits a relatively short plant height with main stem and branch lengths of 29 cm and 36 cm, respectively, which are less than those of the check variety ‘Akwang’. The seeds had a brown testa and an elliptical kernel shape, with a 100-seed weight of 87 g and an average of 54 mature pods per plant. Seed composition analysis revealed an average protein content of 29.3% and a high crude fat content of 54.5%. The oleic acid (C18:1) content reached 82.8%, with an oleic to linoleic acid ratio of 28.5:1, significantly higher than that of ‘Akwang’ (2.2:1). In oxidative stability evaluations under accelerated oxidizing conditions, ‘K-Ol2’ exhibited an extended induction time to reach maximum conductivity increase, indicating improved resistance to lipid oxidation. Regional yield trials conducted from 2020 to 2022 demonstrated that ‘K-Ol2’ produced an average yield of 4.60 MT⋅ha^-1, representing a 10% increase over ‘Akwang’. Due to its high oil content and improved oxidative stability, ‘K-Ol2’ is expected to play a valuable role in the peanut processing industry (Registration No. 10358).

Enhancing pod shatter resistance is essential for improving the mechanical harvesting efficiency of rapeseed (Brassica napus L.). This study aimed to evaluate pod shatter resistance in domestic breeding lines and genetic resources, as well as to investigate the relationship between shatter resistance and agronomic traits thereby providing foundational data for the development of shatter-resistant cultivars. Pod shatter resistance was assessed using the Random Impact Test for 105 accessions in 2022–2023 and 159 accessions in 2023–2024, with the Silique Shatter Resistance Index (SSRI) as the evaluation criterion. Most accessions exhibited susceptibility to pod shatter, whereas IT031375 showed high shatter resistance, identifying it as a promising resource for the development of shatter-resistant cultivars. Analysis of the relationship between weather conditions and pod shatter resistance revealed that longer sunlight exposure and lower precipitation during the growing stages contributed to improved pod development and shatter resistance. Furthermore, a correlation analysis between SSRI and agronomic traits demonstrated significant positive correlations with silique length (r=0.368, p<0.001) and weight (r=0.451, p<0.001). Increased silique length and weight are associated with enhanced pod wall development and seed weight, which are critical for improving yield and shatter resistance.

‘Yuryeo’ is a rapeseed cultivar suitable for rapeseed oil production which was developed by the Bioenergy Crop Research Institute, NICS, RDA, in 2018. ‘Yuryeo,’ characterized by its high oleic acid content and resistance to sclerotinia stem rot and lodging, was developed through gamma-ray irradiation of ‘Hallayuchae’ seeds followed by pedigree breeding. Regional yield trials for ‘Yuryeo’ were conducted in three regions from 2016 to 2019. As a result, the flowering period of ‘Yuryeo’ was observed to be two days later than that of ‘Hallayuchae,’ but both had a similar maturation period. In terms of yield, there was no significant difference between ‘Yuryeo’ and ‘Hallayuchae,’ but ‘Yuryeo’ showed higher resistance to sclerotinia stem rot and lodge. Notably, the oleic acid in ‘Yuryeo’ was 74.2%, marking a 10% increase over ‘Hallayuchae.’ With its enriched oleic acid content and reliable cultivation characteristics, ‘Yuryeo’ can enhance both rapeseed cultivation and the rapeseed oil industry (Registration No. 8753).

‘Joan’, a rapeseed (Brassica napus L.) F₁ hybrid cultivar suitable for producing cooking oil developed by the National Institute of Crop Science, is early maturing with characteristically high yield and oleic acid content. It was bred in 2009 by crossing the male sterile line ‘Mokpo-CGMS’ as the female parent with the restorer line ‘8630-B-6-5-3-6’ as the male parent. The average flowering and maturation dates of ‘Joan’ were April 10^th and June 1^st, respectively, 3 and 4 days earlier, respectively, than that of the control cultivar ‘Sunmang’. The yield of ‘Joan’ obtained in regional adaptation trials was 279 kg/10 a, which is 6% higher than that obtained for ‘Sunmang’. ‘Joan’ is resistant to stem rot disease and more tolerant to lodging than ‘Sunmang’. Moreover, the total oil content of ‘Joan’ is 44.5%, whereas the oleic acid content is 69.5%, which is 2.3% higher than that of ‘Sunmang’. However, erucic acid has not been detected. ‘Joan’ can be grown in paddy fields located in Jeollanam-do, Jeollabuk-do, Gyeongsangnam-do, and Jeju-do in Korea (Registration No. 6896).

This study was carried out to establish the optimal conditions for callus induction and plant regeneration using immature inflorescence of M. sacchariflorus cv. ‘Wooram’, a bioenergy crop selected in Korea. Callus induction rate was the highest (93.3%) in MS medium containing 3 mg L^-1 2,4-D, and 86.7% in MS medium containing 3 mg L^-1 2,4-D combined with 0.1 mg L^-1 BA. Plant regeneration rate was high when the calli derived from the medium containing BA was used, as compared with those derived from the BA-minus medium. The results showed that the medium conditions containing 5 mg L^-1 BA combined with 0.1 mg L^-1 NAA was the most effective in plant regeneration of which the rate reached 86.7%. The regenerated shoots were separated from the calli and roots over 3 cm were developed from the shoots after 4 week culture on basal MS medium without supplementation. The plantlets were then transferred to soil and cultured in greenhouse. After 5 weeks, the plants with the height of at least 20 cm were successfully acclimatized.