Walnut (Juglans regia L.) anomalous microsporogenesis

There are effectuated embriological researches regarding 37 moldavian and introduced from different countries dichogamous (protandrous, protoginous, simultaneously) varieties of of walnut (Juglans regia L) and perspective selections. There are revealed that development of male could be affected by extremal high and low temperatures. During microsporogenesis there were revealed that anomalous phenomenon is noticed within very early flowering protandrous genotypes. On the basis of utilisation of cytoembryiological, including hystochemical methodology were tested dynamic of contents and localisation of enzymes, pollysaccharides, proteins and nucleic acids (RNA and DNA) during microsporogeneis, growing in differentnon adequate pedoclimatical conditions within Republic of Moldova