Spectral investigation of the canopy has an increasing importance in precision viticulture to monitor effect biotic and abiotic stress factors. In this study, RGB (color model, red, green, blue)-based vegetation indices were evaluated find a correlation with grapevine leaf chlorophyll concentration. ‘Hárslevelű’ (Vitis vinifera L.) samples obtained from commercial vineyard digitalized. The conc...

Background: Hyperspectral image analysis is a fast and non-destructive technique that is being used to measure quality attributes of food products. This research investigated the feasibility of predicting internal quality attributes, such as Total Soluble Solids (TSS), pH, Titratable Acidity (TA), and maturity index (TSS/TA); and external quality attributes such as color components (L*, a*, b*)...

Fruits of two cultivars guava, Psidium guajava L., (‘Tailandesa’ and ‘Kumagai’) garlic passion fruit, Passiflora tenuifila Killip were collected to evaluate the infestation co-infestation frugivorous flies associated parasitoids new hosts. Five species Tephritoidea recovered in Tailandesa guavas, three Kumagai guavas fruit. This is first report a fly infesting P. tenuifila. Individualization fr...

The chemical contituents are concerned in the quality of tomato fruit in respect to color, texture, flavor, nutritive value, and wholesomeness. In general, high sugar contents, redness of color, and firm texture are associated with prominence of rich flavor. Biochemical changes as influenced by gro~rth, maturation, and environment of tomato fruit are discussed.

Mechanical fruit grading and automatic fruit grading have been detailed in this paper. The studies and applications of mechanical fruit grading, and computer visual and automatic fruit grading were also particularized. Computer vision technology for detecting fruit size, color, bruise and surface defects and evaluation of fruit overall quality were discussed. The primary problems and developmen...

gundelia tournefortii l. is a well known plant in mountains of iran and is found all over the country. it traditionally has some medicinal applications. in this research, gundelia tournefortii l. seed was studied as a source of edible oil. oil was extracted with immersion method using diethyl ether as a solvent. acidity, saponification, ester, iodine, peroxide and refractive indices, average mo...

Using an F1 population from a cross between Japanese pear (Pyrus pyrifolia Nakai) cultivars 'Akiakari' and 'Taihaku', we performed quantitative trait locus (QTL) analysis of seven fruit traits (harvest time, fruit skin color, flesh firmness, fruit weight, acid content, total soluble solids content, and preharvest fruit drop). The constructed simple sequence repeat-based genetic linkage map of '...

The color of tomato (Solanum lycopersicum) fruit flesh is often used as an indicator of quality. Generally, fruit color is determined by the accumulation of carotenoids and flavonoids, along with concomitant degradation of chlorophylls during ripening. Several genes, such as phytoenesynthetase1 (Psy1), STAY-GREEN (SGR), and SlMYB12, have been extensively studied to elucidate the genes controlli...

Aviary experiments demonstrated that three North American fmgivorous migrant bird species often exhibit color preferences, when factors such as taste, nutrition, and accessibility to food sources are equal. Individual birds differed in initial color preferences, transitivity, and temporal stability of color preferences. There was little tendency of these birds to favor red and black, which are ...