Abstract
The content of chlorophyll-Chl present in green vegetables is strongly associated with the momentary state of the plant photosynthesis. Conventionally, determination of chlorophyll is by extraction with organic solvents and determining a spectrophotometer, and this method expensive, laborious and moreover a destructive method. Thus, the use of portable equipment has been used instead, as they allow studies without destruction of leaf tissue and obtaining instantaneous measurements. Thus, the aim of correlating the chlorophyll results obtained in the laboratory with Falker Chlorophyll Index (FCI) obtained by the ClorofiLog in different citrus rootstocks, as well asits relationship to soil moisture content variation. Positive simple correlations (linear Pearson correlation) were obtained for chl a, b and total, with the lowest correlation values observed for chl β, which ranged from 0.470-788 among the analyzed rootstocks. The coefficients of determination for the three variables chl α, β and total α+β showed a better fit by the polynomial regression model in all analyzed rootstocks; in general, the best results were for chl α, ranging from 0.7093-0.8551. The results indicate the usefulness of the ChloroflLog apparatus in the indirect determination of chlorophyll content in citrus.
Highlights
The Citrus is a very important crop in the Brazilian economy, being cultivated throughout the country, especially in the states of São Paulo, Bahia and Sergipe (IBGE, 2016)
One of the main processes related plant productivity is photosynthesis, and among the factors related to the photosynthetic efficiency and growth and adaptability to different environments is chlorophyll, present in all green vegetables (Engel & Poggiani, 1991)
The experiment consisted in the evaluation of five combinations Cup rootstock citrus, and orange cup “Pera” grafted on Santa Cruz Rangpur lime, Volkamer mandarin, Tropical Sunki mandarin, Cleopatra mandarin and Indian lime (TSK × TRENG 256) monthly analyzes were performed for ten months (March to December, 2017)
Summary
The Citrus is a very important crop in the Brazilian economy, being cultivated throughout the country, especially in the states of São Paulo, Bahia and Sergipe (IBGE, 2016). One of the main processes related plant productivity is photosynthesis, and among the factors related to the photosynthetic efficiency and growth and adaptability to different environments is chlorophyll, present in all green vegetables (Engel & Poggiani, 1991). These chloroplastid pigments are important in this context because they are responsible for light used in photosynthesis and are essential in the conversion of light radiation into chemical energy ATP and NADPH (Batista, Araújo, Antunes, Cavatte, Morães, Martins, & Damatta, 2012). Quantitation of chlorophyll content is normally carried out by extraction using different organic solvents such as acetone, ether, dimethylsulfoxide or methanol (Cruz et al, 2007), followed by the standard determination based jas.ccsenet.org
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
