Journal of Taiwan Agricultural Research

Author:Guang-Jauh Shieh* and Hung-Shung Lu

Abstract:

    Tainung No. 5 is a single-cross purple-glutinous maize hybrid. Its parental inbreds are PE31-2 and PO4. The maternal parent PE31-2 is a flint selected from the inbreeding progenies of PE population from Taichung. The paternal parent PO4 is a flint selected from the inbreeding progenies of PO population from Jiayih. The PE31-2 has the characters of long ear length, 8 row, purple kernel, larger kernel, thinner pericarp, high general combining ability (GCA), and susceptible to Asia borer in whorling stage and pollen shedding stage. The PO4 has the characters of long ear length, 8 row, purple-red kernel, middle kernel size, thinner pericarp, middle general combining ability (GCA), and middle resistant to Asia borer in whorling stage and pollen shedding stage. The Tainung No.5 is uniformly plant height, ear height, plant and ear type, 18 cm ear length, 8 row, larger kernel, with white silk color. The ear fresh weight with husk and ear fresh weight are lower than that of Black-pear, the control variety, by 3.61% and 5.85%, respectively. Under 120-150 kg/ha nitrogen level, and 8025 cm planting density, the Tainung No.5 has higher fresh ear yield and longer ear length.

Key words:Purple-glutinous maize, Hybrid, Fresh ear weight

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