Journal of Taiwan Agricultural Research

Author:Guang-Jauh Shieh

Abstract:

    Eighteen genotypes of maize inbred lines combined from six types of endosperm, including su₁, wx, su₂, sh₁, o₂, wild type, and three genetic backgrounds, including B14, B37, and M14 were used as the materials. The objective of this research was to determine the effects of endosperm types on pericarp thickness in three gentetic background of maize inbred lines. The results showed that pericarp thickness of kernel was significantly affected by genetic background, endosperm types, and interactions of endosperm type and genetic background. Average pericarp thickness and contents of genetic background averaged across endosperm types range from 83 µm (M14) to 170.2 µm (B37), and 5.99% (M14) to 13.9% (B37), respectively. Averaged across genetic backgrounds, the endosperm wx had significantly thinner pericarp thickness, 100.3µm and lowest pericarp contents (7.32%) than other endosperm types. The endosperm o₂ and wild type had thickest pericarp thickness and highest pericarp contents. Pericarp thickness and content of waxy endosperm type were thinner than others, indicated the decreased effect on pericarp thickness of maize inbred lines.

Key words:Maize, Genetic backgrounds, Endosperm type, Pericarp

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