Effects of light, CO2 and humidity on carnation growth, hyperhydration and cuticular wax development in a mist reactor
Effects of light, CO2 and humidity on carnation growth, hyperhydration and cuticular wax development in a mist reactor
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DOI：
10.1007/s11627-001-0071-5
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发表时间：
2001-05-01
影响因子：
2.6
通讯作者：
Weathers, PJ
中科院分区：
文献类型：
--
作者：
Correll, MJ;Weathers, PJ
植物离体存活需要功能正常的气孔、足够的角质层蜡质成分和沉积以及正常的形态发育。在声窗雾反应器中改变光照强度、CO2浓度和相对湿度，研究其对香石竹（Dianthuscaryophyllus）生长、气孔发育、水分过多和表皮蜡质含量的影响。将光照强度从65 μ mol·m（-2）·s（-1）增加到145 μ mol·m（-2）·s（-1），并在气相中富集CO2（1350 ppm），可将过度水合植物的数量从75%减少到25%，并将正常（健康）植物的干重百分比从17%增加到25%。降低相对湿度（约70%RH）周围的植物在雾关闭阶段的最后2个星期的文化减少的数量从70%到9%的水分过多的植物，也增加了正常植物的干重的百分比从16%到25%。在强光或低湿度条件下生长的植物上的气孔具有较小的孔径，并且与在低光和高相对湿度下生长的植物的气孔相比时出现凹陷。来自温室或洋红箱的植物的表皮蜡概况显示蜡化合物随发育年龄、植物类型（过度水合或正常）和所使用的箱类型（通风或不通风）的明显变化。此外，非常不同的蜡配置文件中观察到的植物生长在反应器中改变CO2和光照强度。
Plant survival ex vitro requires functioning stomata, adequate cuticular wax composition and deposition, and normal morphological development. Light intensity, CO2 and relative humidity were altered inside an acoustic window mist reactor to study their effects on carnation (Dianthus caryophyllus) growth, stomata development, hyperhydration and epicuticular wax content. Increasing the light intensity from 65 to 145 mu mol m(-2) s(-1) and enrichment of the gas phase with CO2 (1350 ppm) reduced the number of hyperhydrated plants from 75 to 25% and increased the percentage dry weight of normal (healthy) plants from 17 to 25%. Lowering the relative humidity (approximate to 70% RH) surrounding the plants during the mist-off phase for the last 2 wk of culture reduced the number of hyperhydrated plants from 70 to 9% and also increased the percentage of dry weight of normal plants from 16 to 25%. The stomata on plants grown in conditions of high light or low humidity had smaller apertures and appeared sunken when compared to stomata from plants grown in low light and high relative humidity. The epicuticular wax profiles of plants from the greenhouse or Magenta boxes showed a distinct shift in wax compounds with developmental age, plant type (hyperhydrated or normal), and type of box that was used (vented or not). In addition, very different wax profiles were observed from plants grown in reactors with altered CO2 and light intensities.