Proceedings Volume 2010 (format .pdf) - SimpBTH

distinctly significant regression coefficient, means that the concentration of PEG inthe substrate influenced the number of leaves beside the cultivar factor (fig. 6).Fig.6. Influence of PEG addition on leaves numbers per plantlets (NIRDPSB Braşov, 2009)CONCLUSIONS- control V1 (constitution without the addition of PEG) has not hampered thegrowth of plants, height resulting from experiments was 12.53 cm and 10.33 cm ofthe Christian and Roclas cultivars; the lowest height of plantlets is observed invariant with the addition of 0.012 M PEG which strongly inhibited height growth,the resulting plantlets were 2.27 and 1.53 cm for the Christian and Roclas cultivars.- Christian and Roclas cultivars differ in the height of plantlets obtained from theRoclas cultivar, with an average difference of - 0.661 cm from the Christianvariety.- results on the number of leaves produced on substrates, indicating that variants 2and 4 with the substrates to which PEG was added directly, the number of leaveswere decreased for both cultivars, with values of 3.53 and 2.27 for the Christiancultivar and 3.33 and 2.47 for the Roclas cultivar.REFERENCES1. Bajji, M., S. Lutts, J. M. Kinet, 2000. Physiological changes after exposure to and recovery frompolyethylene glycol-induced water deficit in callus culture issued from durum wheat (Triticumdurum) cultivars differing in drought resistance. J. Plant Physiol., 156, 75–83.2. Boyer, J.S., 1982. Plant productivity and environment. Science 218, 443–448.3. Frensch, J., 1997. Primary response of root and leaf elongation to water deficits in the atmosphereand soil solution. J.Exp. Bot., 48:985-999.4. Hassanpanah, D, E. Gurbanov, A. Gadimov and R. Shahriari, 2008. Determination of yieldstability in advanced potato cultivars asa affected by water deficit and potassium hum,tate in ardabialregion, Iran, Pak., J. Biol. Sci., 15: 1330-113568