Journal of Taiwan Agricultural Research

Author:Guang-Jauh Shieh, Chan-Lee Ho and Hung-Shung Lu

Abstract:

Twenty-one F₁ hybrids derived from seven exotic maize inbred lines (CML76, CML84, CML93, CML98, CML104, SK16O-1 and IP123-1) and open-pollinated Tainan-white (TNW) population were used as materials to evaluate the heterosis and yield potential for green corn. Experiment was conducted at Taiwan Agricultural Research Institute in four crop seasons of 1995. The results showed that these F₁s’ have more kernel number and ear diameter than TNW, while the 100-kernel weight and 100-kernel volume were smaller TNW. Most of F₁ hybrids among exotic inbred lines produced higher yield than that TNW for ear fresh weight and grain dry weight in the fall and winter crop seasons. It is expected that information of heterosis investigated among these exotic inbred lines will be very useful for domestic breeding program.

Key words:Maize, Yield, Exotic germplasm, F₁ hybrid, Heterosis

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