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Rachel A. Itle and Eileen A. Kabelka

of color and ranges from black (0) to white (100). Coordinates, a* and b*, indicate color directions: +a* is the red direction, –a* is the green direction, +b* is the yellow direction, and –b* is the blue direction. Chroma is the saturation or

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MiAe Cho, Brandon M. Hurr, Jiwon Jeong, Chaill Lim, and Donald J. Huber

measurements, and the remaining 10 replicates were used for hue, chroma, and brown spot measurements. The containers were placed in 174-L steel chambers and provided with either air or gaseous 1-MCP at 0.5 μL·L −1 for 24 h at 7 °C. 1-MCP gas was generated by

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Kylara A. Papenfuss and Brent L. Black

effect of Stage III deficit irrigation on the quantity of undersized (% less than 9.5 mm diameter) tart cherry fruit at packout. z There were some treatment effects on fruit quality, including dry matter content (%), SSC, and fruit surface chroma

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Engin Ertan, Esra Erdal, Gülsüm Alkan, and Burak E. Algül

= tan −1 b*/a*) and C* (saturation index or chroma, C* = [a *2 + b *2 ] 1/2 ) coordinates ( Cecchini et al., 2011 ). The water activity (Aw) in a kernel was determined using a water activity device (TH-500, Novosina, Switzerland) at 25 °C. To determine

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Derek W. Barchenger, John R. Clark, Renee T. Threlfall, Luke R. Howard, and Cindi R. Brownmiller

clamshells reached 50% or greater or after 3 weeks of storage. Physiochemical analysis For physicochemical measurements, three berries removed from each of the three clamshells were used to measure exterior berry color (chroma, hue, L*), soluble solids (%),TA

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Scott A. Brawner and Michele R. Warmund

; Konica Minolta, Corp., Ramsey, NJ) with a 10-mm diameter aperture and specular light was included. Two readings of husk color values (L*, chroma, and hue angle) measured on opposite sides of the unhulled fruit were averaged. The L* value ranges from 0

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Melvin R. Hall

In 1983-1987, a Gardner color difference meter standardized to a pink tile (L=70.5, a=+23.9, b=+9.3) and equipped with an aperture of 3.8 cm (1983-1986), 1.9 cm (1987), or 1.0 cm (1988-1989) was used to measure lightness (L) and intensity (chroma) of `Georgia Red' sweetpotato [Ipomoea batatas (L.) Lam.] seed roots cut into longitudinal sections. Individual roots were selected with good color when L<68 and chroma≥39 and fair color when L≥72 and chroma <35 (1983-1985), L<65 and chroma≥42 for good color and L≥80 and chroma <25 for fair color (1986), L≤66 and chroma≥41 for good color and L≥85 and chroma≤20 for fair color (1987). In each year, roots falling between the defined selection values were discarded. In 1988, root sections from a common 1983-ancestor parent root were bulked for plant propagation if L and chroma values were similar. Subsequent measurements of these bulk populations were made in 1989. Measurements by a color difference meter were helpful in making objective judgements in selecting for internal color of sweetpotato. Also, these measurements were helpful in following changes in internal color through several generations of vegetative propagation.

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Heidi C. Anderson, Mary A. Rogers, and Emily E. Hoover

harvest. Fruit color and total soluble solids. Fruit color was measured with a colorimeter (Chroma Meter CR-400; Konica Minolta Sensing, Ramsey, NJ). Measurements were taken from a subsample of eight ripe, marketable fruit per plot. In 2016, sampling dates

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Derek W. Barchenger, John R. Clark, Renee T. Threlfall, Luke R. Howard, and Cindi R. Brownmiller

, chroma, hue, L*, SS, TA, pH, and firmness of the skin and flesh. Physicochemical measurements were discontinued once the percent unmarketable in all three clamshells reached 50% or after 3 weeks of storage. The physicochemical procedures used were modeled

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Shirin Shahkoomahally and Asghar Ramezanian

*, and b * parameters. L * is lightness and a * (–greenness to +redness) and b * (–blueness to + yellowness) are chromaticity coordinates. The a * and b * values were converted to chroma [C* = (a* 2 + b* 2 ) 1/2 ] and hue angle [ h° = tan −1 ( b