【摘要】 以不同抗热性的四个菜豆品种叶片为试材，研究在热锻炼过程中气孔特性的变化及其与抗热性的关系。结果表明：不论在２５ ℃常温下或３８ ℃的高温下，抗热品种比不抗热品种气孔阻抗都低，气孔开度大，而且在３８℃下，抗热品种能维持较长时间的低气孔阻抗；４ 个参试品种中，抗热品种的气孔密度显著大于不抗热品种。本文进一步讨论了不同品种抗热性差别的原因。更多还原

【Abstract】 Stomatal properties and changes in leaf cells during heat acclimation and heat stress in four common bean( Phaseolus vulgaris L.)cultivars with known different thermoresistance were investigated. The relationship of these properties and changes with their thermoresistance were also studied. The results showed that: Stomatal resistance in thermoresistance cultivars were lower under 25℃and 38℃, the duration of low stomatal resistance could be maintained for a longer time under 38℃, and stomatal density and aperture were higher than that in thermosuscepitible cultivars.更多还原