oa Journal of Applied Science in Southern Africa - Maize seed orientation in the substrate and its influences on germination, seedling structure, and transmission of Fusarium moniliforme
The percentage of seedlings emerging during the first 4 days after sowing and the mesocotyl length after 7 days in sand at 25C was strongly influenced by the orientation of the seed in the seedbed. Maize seeds emerged faster when oriented vertically with the pedicel end facing down (VD) or horizontally with the embryal side facing up (HU). The mesocotyl portion of the seedling was shorter (11mm) when sown at HU and VD, providing a fast and easy emergence to the seedling. It was much longer (20mm) when the seed was oriented horizontally with the embryal side facing down (HD) and vertically with the pedicel end facing up (VU). We concluded that the length of the mesocotyl portion of the seedling varies with the orientation of the seed in the substrate at the same depth.
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