Abstract

Intensification of drought phenomena during vegetation period of plants determined serious problems for Romanian farmers by partial or total disparagement of cultures in the last years. This problem is also common for fodder producing farmers from Transylvania. Introducing in fodder plant assortment of some drought resistant species, like type C4 species (sweet sorghum, sorghum x Sudan grass and others) could represent a long-term solution for these farmers. Because these plants need big temperatures for optimal germination the risk of water loosing in the upper stratum of soil in which they are sown appears. In these conditions it is very important to know how big temperature and low humidity during germination process can influence the germination energy and the length of embryonic roots. The purpose of this research was to study the comparative reaction of maize and sweet sorghum seeds at four treatments with different humidity and temperature applied during germination process in order to evaluate the germination energy and length of embryonic roots.

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