Number, size of stomata and intensity of transpiration of some poplar clones of the section Aigeiros (Duby)
1994
Orlovic, S. (Naucni institut za topolarstvo, Novi Sad (Yugoslavia))
Two poplar clones have been investigated: Populus nigra L., cl. 53/86 and Populus deltoides Bartr., cl. PE 19/66. Great variability of the number and size of stomata, as well as transpiration intensity in the investigated clones have been observed. The clone PE 19/66 has a greater number of stomata per square mm of leaf surface. The length and width of these stomata are smaller compared to the stomata of the clone 53/86. The intensity of transpiration per hour per square cm of leaf surface measured in July, August and September was higher for the clone 53/86, whereas the intensity of transpiration per cutting was higher for the clone PE 19/66 because of the larger leaf surface. Based on the results, it can be assumed that the number and size of stomata can be used as a criterion in the selection of poplar genotypes.
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