Îmbunătăţirea producerii de seminţe la hibrizii simpli de porumb timpuriu
2018
Musteaţa, S. (Institute of Crop Production “Porumbeni”, Pascani, Criuleni, (Republic of Moldova) | Borozan, P. | Rusu, G. | Spînu, V.
The article presents the results of investigations concerning the improvement of seed production in early maize single cross hybrids using as female parent a more productive inbred line, related crosses A x A1 and backcrosses (A x A1) x A. The related crosses from Reid Iodent heterotic group, with the genetic diversity index values comprised between 30 and 60%, were more vigorous and productive, possessed higher cold germination and saleable size of seeds. The performance and uniformity of the best hybrids (A x A1) x B were close to those of single cross hybrids. An essential disadvantage of the backcrosses was the greater variation of phenotypical traits and more complicated system of seed production.
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