小麦抗旱性的形态性状及初生根解剖结构研究

Study on Anatomy Structure and Morphology Characters of Drought-resistance in Wheat

采用盆栽试验和高渗溶液胁迫试验 ,对 10个小麦品种抗旱性的形态性状与解剖结构进行研究。结果表明 ,抗旱与不抗旱品种在形态性状上存在差异 ,F测验达到 1%显著水平。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。

Pot experiment and 10% high sucrose stress experiment were carried out to study morphology characters and anatomy structure of drought resistance of ten wheat varieties. Results showed that the morphology characters, such as root-top-ratio, leaf-long, number of primal root, root-dry-weight, main-root-long and plant height, were different between the stronger drought-resistance varieties and the weaker drought-resistance varieties. F tests indicated all of the six morphology characters were significantly different at the 0.01 probability levels. 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.