溫度對文心蘭與彩色海芋組培苗二氧化碳利用能力的影響

Abstract

彩色海芋組培苗在35℃處理時停止生長，而文心蘭組培苗在此溫度處理下，葉綠素含量大量下降，且此溫度造成兩者暗期二氧化碳釋放量最低，使得組培苗明其二氧化碳利用能力下降，而其乾重也降至最低。文心蘭組培苗在30℃時氣孔長度、所有葉綠素含量及暗期二氧化碳釋放量最高，而彩色海芋組培苗在25℃時氣孔寬、氣孔密度、所有葉綠素含量及暗期二氧化碳釋放量最高，有利於明期二氧化碳利用，因此其乾重有最大值。Zantedeschia hybrida Hort. plantlets stopped to grow and chlorophyll contents of Oncidium Grow Ramsey plantlets decreased vastly at 35℃. Stomatal length, chlorophyll contents, CO2 uptake capacity during light duration and dry weight of Oncidium plantlets were higher at 30℃. Stomatal width, Stomatal density, chlorophyll contents, CO2 release capacity during dark duration, CO2 uptake capacity during light duration and dry weight of Zantedeschia plantlets were higher at 25℃