PHYSIOLOGICAL MODIFICATIONS INDUCED BY PLUM POX VIRUS (PPV) IN THE PLUM TREE LEAVES
Four plum cultivars (Silvia, Pescarus, Troianu 10 and Dobrovica) infected by Plum pox virus (PPV) under natural field conditions were analyzed regarding the photosynthesis, transpiration, incidence of the photosynthetic active radiation (PAR) and the chlorophyll content. Using the portable systems LCpro and SPAD 502 were made determinations on asymptomatic and symptomatic leaves. The infection with the virus was established by serological assay DAS-ELISA. In case of the asymptomatic leaves, photosynthesis and chlorophyll content were higher, while the transpiration was lower at all cultivars. The incidence of the PAR at three cultivars was more intense in asymptomatic than in symptomatic leaves, while in one cultivar only an increasing tendency was recorded.
Poenaru, S., Preda, S., Gruia, M. and Tudor, I. (2013). PHYSIOLOGICAL MODIFICATIONS INDUCED BY PLUM POX VIRUS (PPV) IN THE PLUM TREE LEAVES. Acta Hortic. 981, 539-542
plum, physiological traits, asymptomatic, symptoms