The white sesame variety, ‘Kangyou’ (Sesamum indicum L.) with disease resistance and high yield was developed in 2019. It was developed through a cross between ‘China Black’ and ‘SI982849’, in 2006. The ‘Kangyou’ variety has a few branches and triple capsules per node. ‘Kangyou’ exhibited resistance to Phytophthora blight and Fusarium wilt disease in the field. The yield from ‘Kangyou’ was about 1.37 ton per hectare, 13% higher than that of ‘Goenbaek’. ‘Kangyou’ showed a crude fat content of 53% and a lignan content of 4.8 mg/g. This variety will contribute to the increase in sesame production in Korea and will be used in sesame breeding programs.

Watermelons are grafted to prevent soil-borne diseases such as Fusarium wilt (FW) and increase their resistance to abiotic stress. Root-knot nematodes (RKN) are a contributing factor to economic loss in several cucurbits, including watermelon. Growing resistance varieties is an effective way to reduce the damage caused by soil-borne diseases. Resistance evaluation was performed on 50 watermelon lines to select rootstocks resistant to FW and RKN. Fusarium oxysporum f. sp. niveum race 2 was inoculated into 10-day-old seedlings using a root dipping method, and resistance was evaluated for four weeks. The 37-day-old watermelon seedlings were inoculated with Meloidogyne incognita and evaluated 60 days later. Three lines (IT199860, PI296341-6, and PI532811) were resistant to FW race 2, while one line (PI494527) was moderately resistant. Three lines (PI296341-5, PI457916-2, and PI457916-5) were RKN resistant. The PI296341-6 line was selected for its resistance to FW and moderate resistance to RKN. These findings imply that the identified resistant lines can be used in rootstock breeding programs against FW and/or RKN.

Fusarium wilt is a serious disease that causes damping-off, serious wilt symptoms, or death in melon. The aim of this study was to evaluate the resistance of melon germplasm to Fusarium wilt and select promising disease-resistant accessions for further applications. Resistance to Fusarium wilt was examined in 216 melon germplasms by the root-dipping inoculation method with Fusarium oxysporum f. sp. melonis fungal isolate KACC43206 (race 2). Inoculated seedlings were incubated for four weeks and assessed for disease symptoms using indices ranging from index 1 (no symptoms) to 5 (plant wither). A total of 34 accessions showed a disease index < 2.0. Disease indices of 10 accessions were 1.0 four weeks after inoculation. The resistant accessions of melon are expected to help in breeding commercial varieties with Fusarium wilt resistance.

‘Yeseumi’, a new sweetpotato variety resistant to fusarium wilt, was developed for table use by Bioenergy Crop Research Institute, National Institute of Crop Science (NICS), Rural Development Administration (RDA) in 2013. ‘Yeseumi’ was derived from the cross between ‘Mokpo34’ and ‘Singeonmi’ resistant to fusarium wilt in 2005. The seedling and line selections were conducted from 2006 to 2008. Preliminary and advanced yield trials were carried out from 2009 to 2010. The regional yield trials were performed at five locations from 2011 to 2013. ‘Yeseumi’ has three-lobed leaf, and its leaves, stems, petioles, and nodes are green. Storage root of ‘Yeseumi’ has an elliptical shape, red skin, and light orange flesh. ‘Yeseumi’ was highly resistant to fusarium wilt and susceptible to root-knot nematode. Dry matter content was 25.4%, and texture of steamed storage root was intermediate. Total sugar contents of raw and steamed storage root of ‘Yeseumi’ were higher than those of ‘Yulmi’. β-carotene content of ‘Yeseumi’ was 15.7 mg/100 g DW. Yield of marketable storage root over 50 g of ‘Yeseumi’ was 32.5 MT/ha under the early season culture, which was 97% higher than that of ‘Yulmi’. The number of marketable storage roots per plant was 2.8 and the average weight of marketable storage root was 143 g under the normal and late season culture. Marketable storage root yield of ‘Yeseumi’ was 23.9 MT/ha under the normal and late season culture, which was 42% higher than that of ‘Yulmi’. (Registration No. 5848).