Journal of Taiwan Agricultural Research

Author:Guang-Jauh Shieh and Fu-Sheng Thseng

Abstract:

The objective of this study is to evaluate the Tainan-white F₁ hybrids yield potential at different crop seasons in Taiwan, eight inbred lines and twenty-eight F₁ hybrids derived from Tainan-white (TNW) maize populations were available. All the material were evaluated in Taiwan Agricultural Research Institute in spring, summer, fall and winter crop seasons of 1995, respectively, with random complete block design. The results of the analysis of variance showed that the crop seasons, genotypes and crop season × genotype interaction were significant across the four crop seasons for most agronomic characters. The performance of ear fresh weight and grain dry weight of F₁ hybrids were winter and fall > spring > summer. During four crop seasons, compared with open-pollinated TNW population by the yield and agronomic characters, hybrids of E×G, H×E and H×G has been selected. And these hybrids had eight row number, larger kernels, longer ear length, higher yield, better plant type and resistance to lodging.

Key words:Tainan-white, Maize, F₁ hybrid, Crop season, Yield potential

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