Journal of Taiwan Agricultural Research

Author:Lung-Che Chen*, Jeng-Chung Lo, Rong-Kuen Chen, Yi-Shin Chen, Shou-Horng Huang, and Ching-Huan Cheng

Abstract:

    A new Japonica (Keng) type aromatic rice variety, Tainung 74, was developed by the Chiayi Agricultural Experiment Branch, Taiwan Agricultural Research Institute (TARI), COA.  The experi- mental designation of this variety was Chianung yu 901082, and was selected from a progeny of a cross, Tainung 71 and Taikeng yu 30904.  Through nine years breeding program, including progeny selection, preliminary yield trial, advanced yield trial, regional yield trial, quality evaluation, panel test, nitrogen response, and storage trial, the Chianung yu 901082 has demonstrated its stable productivity and good grain quality.  It was formally registered as Tainung 74 by the Committee of Registration for New Plant Variety of the TARI, COA, Excutive Yuan, on November 14, 2006.  The variety possess excellent grain appearance and high eating quality with taro scented flavor, higher yield potential, lower on-panicle sprouting and lodging incidence than Tainung 71.  Tainung 74 is moderately resistant to white backed planthopper and smaller brown planthopper, but its resistance to blast disease is unstable.  Growth duration is 120 and 106 days, and the average grain yield is 7104 kg/ha and 5362 kg/ha in the first and second crop season, respectively.  The variety is recommened to be cultivated in whole rice regions in Taiwan, and the total cultivated area have reached more than 350 hectares in 2009.  Several commercial brands, such as ‘Snow mountain aromatic rice’ and ‘Aromatic beauity’ etc. for the rice have been named in the market.  Furthermore, Tainung 74 had got a golden medal prize at the 10^th International Contest on Rice Taste Evaluation of Japan in 2008, and was selected as the best variety for cooking curry rice.

Key words:Japonica rice, Aromatic rice, Breeding

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