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Sibylle Stoeckli, Karsten Mody, Silvia Dorn and Markus Kellerhals

(QTLs) or major genes for disease ( Calenge and Durel, 2006 ; Khan et al., 2006 ) and pest resistance ( Bus et al., 2008 ; Roche et al., 1997 ; Stoeckli et al., 2008b , 2008c , 2009 ; Wearing et al., 2003 ) as well as fruit quality traits ( Cevik

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Jessica L. Gilbert, James W. Olmstead, Thomas A. Colquhoun, Laura A. Levin, David G. Clark and Howard R. Moskowitz

fruit quality traits of interest to the consumer are what should ultimately fuel production and profitability. In recent surveys, only 48% of U.S. consumers had bought blueberries in the past 12 months compared with 88% of consumers who had bought the

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Xuelian Jiang, Yueling Zhao, Ling Tong, Rui Wang and Sheng Zhao

-Amri, 2013 ; Massot et al., 2010 ; Nguyen and Schwartz, 1999 ). As tomato production is increasing, consumer demand is gradually changing from increased fruit quantity to better fruit quality ( Chen et al., 2013 ; Wang et al., 2015 ). Water is an essential

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Brian A. Kahn

The effects of crop canopy architecture on fruit quality have been studied primarily in tree fruit crops such as apple [ Malus domestica ( Fouché et al., 2010 ; González-Talice et al., 2013 )] and mango [ Mangifera indica ( Normand et al., 2009

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Khalid F. Almutairi, David R. Bryla and Bernadine C. Strik

, reducing crop loads during water deficits increased plant water status of peach ( Lopez et al., 2006 , 2010 ) and pear ( Pyrus communis L.) ( Marsal et al., 2008 , 2010 ) and improved fruit quality of apple [ Malus × sylvestris (L.) Mill. var

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D. Michael Glenn, Gary J. Puterka, Stephen R. Drake, Thomas R. Unruh, Allen L. Knight, Pedro Baherle, Ernesto Prado and Tara A. Baugher

Particle film technology is a developing pest control system for tree fruit production systems. Trials were performed in Santiago, Chile, and York Springs, Pa., Wenatchee and Yakima, Wash., and Kearneysville, W. Va., to evaluate the effect of particle treatments on apple [Malus sylvestris (L.) Mill. var. domestica (Borkh) Manst.] leaf physiology, fruit yield, and fruit quality. Leaf carbon assimilation was increased and canopy temperatures were reduced by particle treatments in seven of the eight trials. Yield and/or fruit weight was increased by the particle treatments in seven of the eight trials. In Santiago and Kearneysville, a* values of the fruit surface were more positive in all trials although a* values were not increased in Wenatchee and Yakima. Results indicate that particle film technology is an effective tool in reducing heat stress in apple trees that may result in increased yield potential and quality.

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Dilip R. Panthee, Chunxue Cao, Spencer J. Debenport, Gustavo R. Rodríguez, Joanne A. Labate, Larry D. Robertson, Andrew P. Breksa III, Esther van der Knaap and Brian B. McSpadden Gardener

quality in the marketplace. Recently, fruit quality has been the most important selection criterion for repeat buyers of tomato. Because of this, tomato breeders have placed significant efforts in improving tomato fruit quality traits, including lycopene

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Jin-Hu Wu, A. Ross Ferguson, Brian G. Murray, Alison M. Duffy, Yilin Jia, Canhong Cheng and Philip J. Martin

are often larger after chromosome doubling ( Campos et al., 2009 ; Wu et al., 2012 ; Ye et al., 2010 ). However, very little information has been available on the effects of increasing ploidy level on other attributes of fruit quality considered

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Robert L. Jarret, Elizabeth Baldwin, Brian Perkins, Rod Bushway and Kelly Guthrie

saponin and other compounds that are being evaluated as natural fungicides ( Duke et al., 2003 ). Pungency is a key characteristic associated with members of the genus Capsicum . It is also an important fruit quality attribute. The degree of pungency in

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J.A. Cline

The effect of aminoethoxyvinylglycine (AVG), commercially available as ReTain, and three organo-silicone surfactants were evaluated in a series of four experiments over a 2-year period in two commercial peach orchards. Four rates of AVG (0, 66, 132, and 264 mg·L–1 AVG; all applied with 0.05% Sylgard 309) and three surfactants (0.05% Sylgard 309; 0.05% Regulaid; and 0.50% LI-700; all applied with 132 mg·L–1 AVG) were applied to `Venture' and `Babygold 7' peach trees 10 days before first harvest. Fruit were harvested according to commercial standard maturation criteria of background color, suture filling, and fruit size. Treatments were assessed in relation to fruit maturity, delay in harvest, fruit size and yield, fruit quality (flesh firmness and brix), as well as fruit quality following 2 weeks of cold storage. Based on sequential harvest data, the maturation of the AVG treated trees was delayed by about 3 to 4 days. Fruit from AVG treated trees were firmer at harvest and 2 weeks following cold storage at 2°C. However, no additional increase in fruit size or yield was detected. In addition, the addition of a surfactant was not necessary for AVG to be efficacious for delaying maturity and enhancing firmness when applied at 132 mg·L–1 AVG. However, when the three surfactants were compared, Regulaid and Li 700 advanced color development in one experiment and Li-700 resulted in firmer fruit in another. Aminoethoxyvinylglycine applications to the clingstone cultivars `Venture' and `Babygold 7' can be used successfully to manage harvest activities by delaying the onset of picking and improving fruit firmness.