Soybean [Glycine max (L.) Merr.] cultivar ‘Chookdu 1’ (registration number: No. 7159) and ‘Chookdu 2’ (registration number: No. 6758) were developed as forage soybean cultivars at Kyungpook National University, Republic of Korea. They were grown in tests over three years and compared with a commercial seed cultivar for seed yield and forage productivity planted in the same row in mixed plantings with corn. Chookdu 1 and Chookdu 2 are tall, indeterminate growth habit selections from a cross between wild soybean (Glycine soja Sieb. & Zucc.), ‘PI 483463’, and cultivated soybean, ‘Hutcheson’ (PI 518664). The plant height of Chookdu 1 and Chookdu 2 were 80.9 cm and 81.4 cm, respectively, compared to 54.7 cm for the ‘Pungsannamul’ commercial seed check. The three-year seed yield of Chookdu 1 and Chookdu 2 was 2.0 and 2.2 t/ha, respectively, and not significantly different from Pungsannamul at 2.4 t/ha. Of the two cultivars Chookdu 2 averaged the most total forage fresh weight (65.0 t/ha). The three year mean forage yield of mixed-planting of corn and Chookdu 2 and Chookdu 1 was 10.4% and 3.8% greater, respectively, than corn monoculture. Results show Chookdu 1 and Chookdu 2 are suitable soybean cultivars for mixed planting in the same row with corn to improve forage yield. They should be useful as parents to use in breeding to develop forage-type soybeans of high quality and yield for use in livestock feed.

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The soybean [Glycine max (L.) Merr.] cultivar ‘Hosim’ (registration number: 5989, registration date: April 8, 2016) was developed at Kyungpook National University, Republic of Korea. Hosim was registered as a cultivar after a two-year (2014–2015) analysis by the Korea Seed & Variety Service, Republic of Korea. It is an F₄ plant selection composited in the F₅ generation developed from the 17D × S08-14788 cross. Hosim is a productive, mid-maturing (~130 days) soybean cultivar with white flowers, tawny pubescence, determinate growth, and yellow seed coat with gray hila. The yield of Hosim was 3.5 t/ha, which was similar to those of the control cultivars, ‘Uram’ and ‘Taekwang’. Hosim soybean oil contained ~79% oleic acid. Hosim could be highly useful in producing high-quality soybean oil, and preparing soy-based foods with high oleic acid concentration.

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A panel of 65 melon germplasm was used to screen for resistance to Fusarium oxysporum f. sp. melonis (Fom) and Monosporascus cannonballus. The screening test revealed 35 accessions that are highly resistant to Fom race 1 and 11 accessions with high resistance to M. cannonballus. A total of four accessions, ‘K134068’, ‘K133069’, ‘Wondae’ and ‘PI 414723’, showing resistance to both pathogens were selected as candidates for melon rootstock. Yield and quality of fruits harvested from ‘Earl’s elite’ (Muskmelon, Reticulatus Group) grafted onto the selected melon rootstocks were found comparable to or better than those of non-grafted melons. Nearly negligible incidence of fruit fermentation was observed when ‘Homerunstar’ (Honeydew type, Inodorus Group) was grafted with the selected melon rootstocks, unlike when it was grafted onto ’Shintozwa’ (Cucurbita spp.) rootstock. The selected melon accessions with resistance to Fusarium wilt and Monosporascus root rot are considered to be potential and valuable genetic resources for breeding program of melon.

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