STUDY OF SPOROPHYTIC-GAMETOPHYTIC EXPRESSION OF ALCOHOL DEHYDROGENASE-1 GENE IN TETRAPLOID CORN (ZEA MAYS L.)

Organ specific regulation of the Adh1 gene was studied in liquid endosperm, mature scutellum and pollen grains of tetraploid corn. The results show that during kernel development the regulation of two allelic forms can be changed. The pollen analysis revealed that different regulatory processes act in sporophytic as well as in gametophytic ADH expression at the tetraploid level. Adh1-0 allele could not be detected in the mature scutellum of ADH− tetraploid plant. The lack of the ADH enzyme activity did not influence the gametopohytic functions in the pollen grains.