Accumulation and reutilization of the dry bio mass in barley varieties and lines
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Author: Svetla Kostadinova, Nevenka Ganusheva
The accumulation and reutilization of the dry mass of nine Bulgarian malting barley genotypes were studied in a field experiment: three cultivars (Krami, Krasen, Kristi) and six new perspective lines (689069970, 22506999, 2390300, 24102400, 24201900, 70412296). It was found that the biomass of the Krami, Krasen, Kristi cultivars and the studied lines at heading/anthesis was higher compared with the mass of the vegetative parts in maturity. The genotypes synthesized from 2.4 to 3.57 times more biomass before anthesis compared to after that stage and they were remobilized and used reserves accumulated in the pre-anthesis period. The efficiency of the translocation of the biomass and the contribution of the pre-anthesis assimilates to the grain were the highest in the Krasen cultivar (29.6 and 49.1%, respectively) and lowest in line 704 112 296 (17.7 and 30.1%, respectively).

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