[Monomorphism of isoenzyme loci in natural and cultivated amaranth (Amaranthus L.) populations].

Starch gel electrophoresis was used for isozyme analysis of ADH, GDH, MDH, IDH, and ME in populations of amaranth. Experiments were performed with 93 populations and 4 cultivars. Some populations proved to be polymorphic, and this fact allowed analysis of the genetic control of the enzymes listed.

[Isozyme analysis in a genetic collection of amaranths (Amaranthus L)].

In various populations of the cultivated and weedy amaranth species, the electrophoretic patterns of alcohol dehydrogenase (ADH), glutamate dehydrogenase (GDH), malate dehydrogenase (MDH), isocitrate dehydrogenase (IDH) and malic enzyme (Me) were studied. In total, 52 populations and two varieties (Cherginskii and Valentina) have been examined. Allozyme variation of this material was low.

[Intrapopulation variability of some meadow plant species with respect to their ability to accumulate 90Sr].

Field and laboratory studies of different plant species revealed the presence of intraspecific polymorphism in respect of the ability to accumulate 90Sr. The populations consisted of the plants effectively and ineffectively accumulating 90Sr; the former were capable of two to thirty-seven times higher accumulation than the latter. The proportion of the plants with high accumulating ability can reach 10%.

[Seed set analysis in three amaranth species (A. cruentus, A. caudatus, and A. lividus) under self- and cross-pollination conditions].

Seed set was analyzed in three amaranth species (A. cruentus, A. caudatus, and A.