A new computer vision algorithm for citrus fruit quality classification based on the size of a single tree fruits was developed in this study. The image properties of area, perimeter, and diameter for the citrus fruits were measured by pixels. In order to estimate citrus fruit size in a realistic manner, the ratios of diameter, perimeter and area in pixel values in relation to the actual size of one fruit were determined. The total of 1860 citrus fruits were grouped based on diameter, perimeter, and area in pixels. The results of the grouping of citrus fruits by diameter, perimeter and area were compared with the results of the survey research into citrus fruit size as conducted by the Jeju Citrus Commission. Comparative results reveal that the image of the citrus fruit diameter in pixels demonstrate a more accurate size than the other two pixel values, i.e. perimeter and area.
This experiment was carried out to identify superior parents [three way-cross F1s and donors (cultivars/breeding line)], and their Line×Tester hybrids (hereafter L×T hybrids) for major quantitative traits in Lilium×formolongi. The experiment was designed in line×tester mating design taking 5 three way-cross F1s as lines, 3CVs/breeding lines as testers and their 15 L×T hybrids in a Randomized Complete Block Design (RCBD) with 3 replications. The analysis of variance (ANOVA) for L×T analysis revealed a highly significant difference for all the studied quantitative traits revealing the presence of genetic variability among the genotypes under investigation. The estimated GCA effects revealed three way-cross F1s; (Stu× W) × AF1-6 (L2) and (AF×Ad) × HU-3(L1) found to be superior as they possessed significant GCA effects for 7 and 4 quantitative traits respectively. Likewise, Julius-19 (T1) and 12-1-2(T3) can be used as effective donors as both of them possessed significant GCA effects for 6 quantitative traits. The L×T hybrids, [57-7 (Aug×AugE)×BT] ×12-1-2 i.e. L4×T3 and [60.1 (AF×Ad) × Gel] × Julius-19 i.e.L5×T1 has possessed significant SCA effects for 5 traits and [(Stu× W) × AF1-6]×Julius-19 i.e.L2×T1, [(Stu× W) × AF1-6]×WT-5 i.e.L2×T2 and [(Stu× W) × AugE-2]×WT-5 i.e.L3×T2 had revealed significant SCA effects for 4 traits. These hybrids can be considered as promising hybrids. The estimation of gene action divulged that bud length and the attitude of the floral axis shown the prevailing of additive gene action while the rest of the traits had predominantly exhibited non-additive gene action.
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