初生根解剖结构分析表明，抗旱性强的品种表现为初生根直径大，皮层厚，中央大导管直径小。
The anatomy structure photos of primal root showed the stronger drought-resistance varieties had the bigger diameter of primal root, the thicker cortex and smaller diameter of the main xylem vessel.
但不同的玉米品种在抗旱性上存在极显著差异，抗旱性强的品种在水分胁迫下仍然保持较高的发芽势和发芽率。
There were obvious difference on drought resistance among the varieties, higher drought resistance varieties kept higher vigor of germination and germination (capacity).
可将4叶期和分蘖盛期的发根力作为选育或筛选杂交中稻强抗旱性品种的参考指标。
The rooting ability at 4 th leaf and at top tillering can be used as selection criterion in rice breeding for drought resistance.
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