A New Forage Oat Cultivar Taehan’ for Early-heading and High-yielding of Double Cropping Cultivation in Paddy Field
2013
Han, O.K., RDA, Suwon. Repulic of Korea | Park, T.I., RDA, Iksan. Repulic of Korea | Park, H.H., RDA, Iksan. Repulic of Korea | Song, T.H., RDA, Iksan. Repulic of Korea | Oh, Y.J., RDA, Iksan. Repulic of Korea | Hwang, J.J., RDA, Suwon. Repulic of Korea | Kwon, Y.U., RDA, Suwon. Repulic of Korea
‘Taehan’ (Avena sativa L.), a winter oat for forage use, was developed by the breeding team at the Department of Rice and Winter Cereal Crops, NICS, RDA in 2012. It was derived from a cross between ‘Malgwiri’ and ‘CI8015’. Subsequent generations were handled in bulk and pedigree selection programs at Suwon and Yeoncheon, respectively. After 2 years of preliminary and advanced yield tests, ‘SO00020B-YB-15-5-9-4-3’, designated as ‘Gwiri78’, were subsequently evaluated for earliness and forage yield during 3 years in four regions such as Yesan, Iksan-1 (Paddy), Iksan-2 (upland), and Jeju from 2010 to 2012, and finally named ‘Taehan’. Over 3 years, the heading date of ‘Taehan’ was about 6 days earlier than that of the check cultivar ‘Samhan’ (May 8 and May 14, respectively), and their average forage dry matter yield harvested at the milk-ripe stage was 14.5 tone ha－1, compared with 14.1 tone ha－1 for the check cultivar. The cultivar ‘Taehan’ was lower than that of the check cultivar ‘Samhan’ in terms of protein content (6.3% and 7.7%, respectively) and total digestible nutrients (60.7%, and 62.1%, respectively). The TDN yield was more than that of the check cultivar (9.1 tone ha－1 and 8.0 tone ha－1, respectively). Fall cropping of ‘Taehan’ is recommended only in areas where average daily minimum mean temperatures in January are －6°C, and it should not be cultivated in mountainous areas, where frost damage is likely to occur.
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