OBSERVATIONS ON THE FOLIAR ASSIMILATING PIGMENTS CONTENT FOR WILD AND GARDEN ROSES

The study of foliar assimilating pigments (chlorophyll a and b, carotenoid pigments) during the ontogenetic development for the wild and the cultivar species of roses indicate from interesting aspects on the ratio chlorophyll a and b, which is more than a unit in the case of species and in most cases, less than a unit for the cultivars. The ratio chlorophyll and carotenoid pigments, reaches thousands in the case of species and units (tenths) for cultivars.We mention here that the cultivars are the result of multiple and introgressive hybridizations conducted for hundreds of years [ADUMITRESEI & ST NESCU, 2009; KRüSMAN, 1986].