Abstract
One of the most important conditions of high quality fruit production is the early detection of hytopathologycal infections. The most dangerous disease of peach (Prunus persica) is the Taphrina deformans, which causes serious damages mainly in the years where the weather condition is cool and wet. In this study, healthy and naturally diseased leaves by peach leaf curl were investigated in the laboratory of University of Debrecen, CAAES, Institute of Water and Environmental Management. Both of hyperspectral measurement and the values of spectrophotometer shown the chlorophyll content of diseased leaves were lower than the healthy samples. Based on the experiments the water status of investigated leaves established the infected leaves contained more water in their tissues.
Highlights
The botanical name of peach (Prunus persica (L.) Batsch) refers to the putative country of origin, Persia, and Linné (1758) first named the species based on this opinion (Bassi & Monet, 2008)
The chlorophyll and water content of healthy and naturally diseased leaves infected by pathogenic leaf curl disease were investigated in the laboratory of University of Debrecen, CAAES, Institute of Water and Environmental Management
The three other indices were calculated by the red edge. These indices are defined by the following equations: Based on the results, the generic Normalized Difference Vegetation Index (NDVI) values show that in the most cases the healthy leaves had higher NDVI than the diseases by Taphrina deformans
Summary
The botanical name of peach (Prunus persica (L.) Batsch) refers to the putative country of origin, Persia, and Linné (1758) first named the species based on this opinion (Bassi & Monet, 2008). First infection is in the spring which comes either from ascospores that have developed on dead fallen leaves or from spores produced by fructifications on the bark, if the fungus is one that attacks the bark tissue of twigs. Infection of the host becomes obvious with the appearance of yellow to red or reddish-purple necrotic lesions on the leaf. These cause curling and deforming of the whole leaf blade and in section the fungus is seen to cause hyperplasia and hypertrophy (abnormal cell division and cell enlargement) of both the epidermis and many underlying cells including the bundle sheath cells; all these cells develop anthocyanins. They are variable in size with a sequence of maturity of ascospores (Kramer, 1973)
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