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Response of Chlorophyll a, spad values.and Chlorophyll Fluorescence Parameters in Leaves of Apricot Affected Some Abiotic Factors

引用

Journal of Food Science and Engineering 2013年第1期3卷 19-24页

作者： Adrijana Filipovic Milan Poljak and Dragan Skobic Faculty of Agriculture and Food Technology University of Mostar Biskupa Cule bb 88000 Mostar Faculty of Agriculture University of Mostar Svetogimunska cesta 25 10000 Zagreb Faculty of Mathematics and Science Education University of Mostar Matice Hrvatske b.b. 88000 Mostar

Experimental trail conducted in Jasenica, Bosnia and Herzegovina have showed apricot （Prunus persica L） leaf injures especially on the edges in the middle of the season. Leaf edges show chlorosis starting from the tip due to lack of Chlorophyll. Affected leaves start falling and renew leaves masse as respond to stress conditions which also delay fruits maturation. Technological development in detecting the stress of high plants trough the leaf fluorescence and Chlorophyll concentration have led to the introduction of instruments which utilize fluorescence as a basis for determining stress level. The paper was aimed to show whether the productivity values.calculated from Chlorophyll fluorescence Fv/Fm were comparable to those produced by spectrophotometric method in detecting Chlorophyll a concentration and spad values.detected by Chlorophyll meter （spad-502）. Measurements of nitrogen content were also provided in order to obtain accuracy of spad meter since Chlorophyll molecules contain nitrogen in their structure. To test the relationship between these three technique regression relationship was obtained. Regression coefficient between Fv/Fm values.and Chlorophyll a concentration mg g-t was high. Also, strong regression coefficient was observed between Chlorophyll a and spad values.indicating a good accuracy of this device which was also confirmed by good regression between nitrogen content and spad values. Fluorometer measurements on injured leaves samples of apricot have also reviled the Fv/Fm values.below 0.83 which is in according with numerous authors who considered a line for indicating stress factors.

关键词： Plant stress apricot Fv/Fm values Chlorophyll fluorometer Chlorophyll a concentration spad values.

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