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Late bolting and High yield New Red Leaf Lettuce "Gopungjeokchukmyeon"  

Jang, Suk Woo (Department of Horticultural Crop Research, National Institute of Horticultural & Herbal Science)
Hur, Youn Young (Department of Horticultural Crop Research, National Institute of Horticultural & Herbal Science)
Choi, Mi Ja (Highland Agriculture Research Center, National Institute of Crop Science, RDA)
Kwon, Young Seok (Highland Agriculture Research Center, National Institute of Crop Science, RDA)
Kim, Jeom Sun (Highland Agriculture Research Center, National Institute of Crop Science, RDA)
Lee, Jong Nam (Highland Agriculture Research Center, National Institute of Crop Science, RDA)
Lee, Eung Ho (Department of Horticultural Crop Research, National Institute of Horticultural & Herbal Science)
Seo, Myeong Hun (Gyeonggi-do Agric. Res. and Extension Services)
Park, Jae Ho (Chungcheongbuk-do Agric. Res. and Extension Services)
Jang, Ik (Jeollabuk-do Agric. Res. and Extension Services)
Jang, Mi Hyang (Jeollanam-do Agric. Res. and Extension Services)
Hwang, Hae June (Gyeongsangnam-do Agric. Res. and Extension Services)
Ko, Sun Bo (Jeju-do Agric. Res. and Extension Services)
Publication Information
Korean Journal of Breeding Science / v.41, no.4, 2009 , pp. 574-578 More about this Journal
Abstract
A new red leaf lettuce (Lactuca sativa L.) cultivar, "Gopungjeokchukmyeon" which has late bolting and good red expression leaf color was developed from a cross between "Andongjeokchukmyeon" (red leaf color and late bolting) and "Dukseomjeokchukmyeon" (high yield). The cross and selection for advanced lines had been done by the pedigree method during 2000-2006. The advanced lines were evaluated for yield and adaptability at several locations in Korea (Gangwon, Kyunggi, Chungbuk, Kyungnam, Jeonnam, Jeonbuk, and Jeju) from 2007 to 2008. The "Gopungjeokchukmyeon" has gray seed color and traverse elliptic leaves. Compared to "Dukseomjeokchukmyeon", marketable yield of "Gopungjeokchukmyeon" was higher by 17% (at 330 g per plant) and Gopungjeokchukmyeon has particularly improved expression of red leaf color in high temperature cultivation in the field. The shelf-life of "Gopungjeokchukmyeon" was three weeks longer than "Dukseomjeokchukmyeon" at $4^{\circ}C$. The anthocyanin and sugar contents of "Gopungjeokchukmyeon" were higher than those of "Dukseomjeokchukmyeon" with 29.4 mg/100 g and 4.8 brix, respectively. The content anthocynin of "Gopungjeokchukmyeon" is about 10 times higher than those of "seomjeokchukmyeon". Furthermore, its taste is better, more crispy, and sweeter than those of "Dukseomjeokchukmyeon", This new cultivar "Gopungjeokchukmyeon" can be harvested all year around even summer cultivation.
Keywords
leaf lettuce; red leaf color; shelf-life; taste; breeding;
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