Density and size of stomata of apple trees growing under irrigated and non-irrigated conditions
1995
Elias, P. (Slovenska Akademia Vied, Bratislava (Slovakia). Botanicky Ustav)
Variation in stomatal density (number of stomata per square m) and size (length, width) were determined in four groups of six-year-old apple trees, differing in irrigation treatments. Mean stomatal density increased in the following sequence: permanently irrigated (PI) - irrigated in spring (ISP) - irrigated in summer (ISM) - non irrigated (NI), the lowest being in PI and the highest in NI. The differences in stomatal size were not statistically significant, except ISM with the largest stomata; however, the smallest stomata were found in NI. Stomatal density appears to be predominantly affected by water status of the apple trees in the period of vegetative growth in spring.
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