植物学报 ›› 1990, Vol. 7 ›› Issue (04): 43-48.
• 研究报告 •
李德全 邹琦 程炳嵩
Li De-quan, Zou Qi and Cheng Bin-song
摘要： 两年的试验结果表明：在土壤水分胁迫下抗旱性强的小麦品种叶片的相对含水量和水势均高于抗旱性弱的品种；渗透势与水势为线性关系，水势每变动一个单位，渗透势变动0.71- 0.93个单位；渗透势与相对含水量的对数化关系为两条直线组成的一条折线，第一条直线渗透势的下降完全由渗透调节引起；第二条直线渗透势下降主要是细胞失水浓缩的结果。渗透调节能力为：秦麦3号>昌乐5号>山农587>济南13>烟农15>鲁麦5号。
Abstract: The experimental results of two years indicated that water potential and relative water content of leaves of wheat cultivars with strong drought resistance were higher than that of the cultivars with weak drought resistance under soil water stress. Osmotic potential and water potential were subjected to linear relation, osmotic potential changed 0.71-0.93 unit when water potential changed one unit, and that Log osmotic potential in relation to Log relative water content was a broken line composed of two straight lines. The first straight line showed that the decrease of osmotic potential was completely compensated with osmotic adjustment. The second straight line showed that the decrease of osmotic potential resulted from concentration due to cell losing water. The ability of osmotic adjustment was as follows. Qinmai NO. 3 >Changle NO. 5>Shannong NO.587>Jinan NO.13>Yanhong NO.15>Lumai NO.5.
李德全 邹琦 程炳嵩. 抗旱性不同的小麦叶片的渗透调节与水分状况的关系. 植物学报, 1990, 7(04): 43-48.
Li De-quan;Zou Qi and Cheng Bin-song. Relationship Between Water Status and Osmotic Adjustment of Wheat Leaves Different in Drought Resistance. Chinese Bulletin of Botany, 1990, 7(04): 43-48.