水培与土培君子兰叶片气孔的比较研究

Comparative studies on stomata shape of water-cultivated seedlings and soil-cultivated seedlings of clivia miniata regei

通过对君子兰(Clivia miniata Regei)不同品种水培苗与土培苗叶片下表皮气孔密度、大小、气孔开度日变化的观察比较,结果表明:水培苗气孔明显比土培苗气孔大.不同品种水培苗之间气孔大小差异不显著.水培和土培条件下同一品种不同部位气孔密度差异均显著,表现为叶尖>叶中>叶基.水培苗与土培苗叶片气孔开度日变化均有两个高峰,分别出现在11:00和17:00.水培苗气孔开度在同一时间内比土培苗气孔开度大.土培苗气孔开度日变化曲线比土培苗波动大.

Through comparison and observation on different kinds of Clivia miniata Regei water-cultivated Seedlings and soil-cultivated seedlings the change of stomata density, stomata size, stomata divergence of the leaves＇ lower epidermis in the daytime, the result shows that Water-Cultivated Seedlings ＇stomata is obviously larger than that of soil-cultivated seedlings. There is no sensible difference among different kinds of water-cultivated Seedlings＇ stomata size. There is remarkable difference among the same breed＇s different parts of stomata density under conditions involving water cultivation and soil cultivation. Leaf apex＇s stomata density is the greatest, while leaf base＇s stomata density is the least. The two peaks of stomata divergence of the leaves are 11：00 and 17：00. Stomata divergence of water-cultivated seedlings is larger than that of soil-cultivated seedlings while daytime change curve fluctuations of stomata divergence of soil-cultivated seedlings are larger.