�ber mono- und digen bedingte Heterosis bei Antirrhinum Majus L.

Yield and Variability of Chlorophyll-Mutant Heterozygotes in Barley

“…Thus, in Anthirrhinum majus, STUBBE and PIRSCHLE (1940) and STUBBE (1953) observed that plants which were heterozygous for one or two chlorophyll-mutant genes were, in general, clearly superior in vigour to normal homozygous plants, and no indications were found that some genes had harmful effects on the heterozygote. Similarly, GUSTAFSSON (1946, 1947, 1952, 1953GUSTAFSSON et al, 1950) has demonstrated convincingly that heterozygotes for one or two of the mutant genes studied had regularly a considerably higher yield than normal homozygotes.…”

“…An outstanding feature of the plant studies is that overdominance has been found relatively often. This was for instance the case in most of the investigations carried out by GUSTAFSSON, and in similar studies of recessive genes in Anfirrhinum mujus (STUBBE and PIRSCHLE, 1940;STUBBE, 1953). However, overdominance has not invariably been found for all lethal genes studied in plants, and the total number of genes examined is modest.…”

Heterozygosity in Erectoides Mutations in Barley

“…In a series of papers the dominance and superdominance theories have been discussed (e.g., EAST, 1936;CROW, 1948;HENDERSON, 1949;BRIEGER, 1950, etc.). STUBBE and PIRSCHLE (1940) presented a case of superdominance, as the term is limited by NYBOM (1950). They demonstrated a higher content of chlorophyll than in normals in plants of Antirrhinizm majus, heterozygous in a chlorina mutation.…”

Kaasaegseid Seisukohti Heteroosi Olemusest

“…Kõige vastuvõetavamaks seletuseks peetakse, et dominantse alleeli üks doos A on suurema mõjuga kui kaks doosi AA. Käesoleva sajandi neljakümnendatel aastatel kinnitasid üledomineerimishüpoteesi paljude teadlaste katsed (Stadler, 1939;Gustafsson, 1946;Stubbe, 1953;Schuler, 1954). Uledomineerimise klassikalisteks näideteks on maisi kahekordsed hübriidid, millede kõrge produktiivsus on tingitud paljudest heterosügootsetest lookustest.…”