TITLE:
Estimation of the Foliar Area by Non-Destructive Methods in Two Stages of Growth of Pepper Plants (Capsicum annuum L.) Hybrid Salvador
AUTHORS:
Osvaldo Fosado Téllez, Emanuel Muñoz Muñoz, Antonio Torres García, Jorge Luis Cué García, Eduardo Fidel Héctor Ardisana, Rolando León Aguilar, Elízabeth Fosado Obregón
KEYWORDS:
Image Binarization, Regression Analysis, Leaf Area
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.9 No.3,
February
1,
2018
ABSTRACT: The present work was aimed to obtain a model for the
determination of the leaf area in function of the length and width of the
leaves in pepper (Capsicum annuum L.)
hybrid Salvador. The research was carried out in nursery conditions at the Experimental Campus La
Teodomira, located in the parish of Lodana, Santa Ana, province of Manabí,
Ecuador, in 2016, in the stages of initiation of flowering and
flowering-fructification. In each phase 100 physiologically mature leaves of
different sizes were collected. Leaves were digitalized in a rectangle with
known dimensions, which allowed the area to be calculated through the
percentage of pixels of different colors. From the determination of the length
and maximum width of each leaf and the estimated area through the digitization
process, the regression models were obtained, selecting the better fit
generated between the leaf area and the product of the length by the maximum
width of the leaf (). In the initiation of flowering stage the quadratic model generated the best
coefficient of determination (R2 = 0.958), whereas in the
flowering-fructification stage the
best coefficient of determination was achieved by the cubic model (R2 = 0.955). The practical applicability of other simpler models among the tested
ones, which show a high accuracy and sacrifice a low percentage of error, is
discussed.