Journal of Taiwan Agricultural Research

Author:Yong-Pei Wu, Dah-Jing Liao, Chih-Hao Chiu, and Szu-Yi Chou*

Abstract:

    Rice is the main staple in Taiwan. In response to the impact of imported rice and consumption trend, developing new varieties with a focus on improved quality, yield, and pest resistances have become the main objectives for rice breeding improvement in Taiwan. ‘Tainung 81’, from the line Chianung-yu 981027, was developed by crossing ‘Taikeng 2’, the female parent variety, with Chianung-yu 902036, the male parent line with disease resistance, insect resistance, erect plant type, and lodging resistant characters, at the Chiayi Agricultural Experiment Branch of Taiwan Agricultural Research Institute in the first crop season of 2006. The progenies were selected by the pedigree method. After 5 generations, the line of Chianung-yu 981027 was selected in the first crop season of 2009. After the processes of primary yield trial, advanced yield trial, regional yield traits, and various agronomic characteristics tests, this selected line showed good traits, including moderate threshing, preharvest sprouting, lodging resistance, and resistance to rice blast and planthoppers. Its grain appearance and taste were similar to the control variety ‘Taikeng 9’. There were no significant difference between rice Chianung-yu 981027 and the control variety ‘Taikeng 9’ in grain yield. Therefore, it was formally renamed as ‘Tainung 81’ in 2017 and is considered suitable for reducing pesticide, rational fertilization, and organic cultivation. It is an alternative quality rice for the farmers and market.

Key words:Japonica rice, Oryza sativa cv. ‘Tainung 81’, Resistance to rice blast and planthoppers

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