Journal of Taiwan Agricultural Research

Author:Guang-Jauh Shieh*, Chan-Lee Ho, Hung-Shung Lu, Bing-Huei Chen, Jyh-Nong Tsai and Huey-Ing Liu

Abstract:

    Tainung No. 4 is a single-cross green maize hybrid. Its parental inbreds are 81TNW208-1-3-3-1 and 81TNW219-2-1-1-2. The maternal parent 81TNW219-21-1-2 is a flint selected from the inbreeding progenies of Tainan-White (TNW) population from Hualien. The 81TNW219-2-1-1-2 has the characters of strong growth, row number up to 8, larger kernel, high general combining ability (GCA), and middle resistance to Asia borer. The paternal parent 81TNW208-1-3-3-1 is a semident selected from the inbreeding progenies of TNW population from Pingtung. The 81TNW208-1-3-3-1 has the characters of strong growth, long ear length, 8 row number, larger kernel, high general combining ability (GCA), and middle resistance to Asia borer in the whorling stage. The Tainung No. 4 is uniform in plant height, ear height, plant and ear type, 20 cm ear length, 8 row number, larger kernel, resistance to lodging, and with light red silk color. The ear fresh weight with husk and ear fresh weight were higher than those of CK of variety (TNW) by 34-39% and 26-33%, respectively. It also is resistant to Puccinia sorghi (common rust), Puccinia polysora (south rust), H. turcicum (causing north corn leaf blight), H. maydis (causing south corn leaf blight), and Asia borer, but susceptible to Sclerospora sacchari (causing downy mildew) and maize dwarf mosaic Virus-B strain. The Tainung No. 4 is suitable to be harvested from the milking stage to early dough stage and shows good taste quality whether for boiling or roasting.

Key words:Tainan-White (TNW), Green-maize, F₁ hybrid

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