INFLUENCE OF NaCl AND NaHCO₃ ON THE FOLIAGE AND POLLEN GERMINATION OF ROSE ROOTSTOCK PLANTS GROWN IN MITSCHERLICH POTS

An individual response of the pollen from different plants of R. multiflora hybrids upon salt stress, expressed by a different germination ability, was found and gave evidence for a positive correlation between the salt tolerance of the pollen and the donor plant. The symptoms on the foliage of the plants stressed by a salt could precisely be described and classified for NaCl and NaHCO₃ contamination.