Non-destructive estimation of chlorophyll content of peanuts grown at different soil texture and salinity levels

Authors : Cihan KARACA, Gülçin Ece ASLAN, Begüm POLAT, Dursun BÜYÜKTAŞ

Pages : 301-305

Doi:10.29136/mediterranean.957192

View : 12 | Download : 5

Publication Date : 2021-12-01

Article Type : Research Paper

Abstract :Chlorophyll is a significant biochemical component and can be determined in the laboratory insert ignore into journalissuearticles values(destructive); and using various chlorophyll content measuring devices insert ignore into journalissuearticles values(non-destructive);. In this study, destructive and non-destructive methods were used to determine chlorophyll content and compared in peanut insert ignore into journalissuearticles values(Arachis hypogaea cv. NC-7); grown under different soil texture and saline water applications. The experiment was carried out in a complete randomized block design in pots using two soil textures insert ignore into journalissuearticles values(clay-loam and sandy); and three irrigation water salinity insert ignore into journalissuearticles values(0.7, 2.1 and 3.3 dS m-1);. While the chlorophyll contents insert ignore into journalissuearticles values(Chl-a , Chl-b, Chl-a+b, Chl-a/b); were determined with the acetone extraction procedure, which is classified as destructive methods under laboratory conditions, the Chlorophyll Content Index insert ignore into journalissuearticles values(CCI); values were measured with the hand-held chlorophyll meter device insert ignore into journalissuearticles values(Apogee CCM-200);, which is a non-destructive method. While irrigation water salinity decreased all types of chlorophyll contents insert ignore into journalissuearticles values(Chl-a, Chl-b, Chl-a+b); insert ignore into journalissuearticles values(mg cm-2);, it did not cause a statistical difference in Chl-a/b. Linear and polynomial models were fitted between the different chlorophyll contents and the CCI values under different soil textures and saline water levels. Model performances were slightly better with the polynomial model compared to the linear model in all experimental treatments. Since the difference between model performances is small, it is recommended to use the linear model due to its ease of use. In addition, the total chlorophyll content can be safely estimated under saline conditions by using portable chlorophyll meters.
Keywords : Acetone extraction procedure, CCI, Chl a, Chl b, Chl a b