‘Smaragd’ is a columnar apple cultivar ( Malus × domestica Borkh.) released in 2006, as a result of the breeding program at the Department of Fruit Growing, Viticulture, Horticulture, and Landscape Architecture, Faculty of Agriculture, University
As a result of the high market value and increasing interest from consumers, efforts have been made to promote organic apple production and solve some of the problems facing this system such as application of integrated pest and groundcover
71 ORAL SESSION 20 (Abstr. 140-146) Postharvest: Apple and Pear
145 WORKSHOP 14 (Abstr. 320–324) New Plant Growth Regulator (PGR) Activity and Research Opportunities for Peaches and Apples
145 WORKSHOP 14 (Abstr. 320–324) New Plant Growth Regulator (PGR) Activity and Research Opportunities for Peaches and Apples
“It is remarkable how closely the history of the Apple-tree is connected with that of man.” ( Thoreau, 1913 ) Apple has been a mainstay of American culture for centuries ( Burford, 2013 ). Wild Malus sp. are native to North America as well as
84 ORAL SESSION 22 (Abstr. 164–170) Postharvest Physiology of the Apple
Apple ( Malus × domestica Borkh.) is one of the most important temperate fruit trees. Improving fruit quality and enhancing the ability to resist multiple diseases remain the primary goals in apple breeding programs worldwide ( Aldwinckle et al
Abstract
Ag(I), applied in aqueous solution as AgNO3, inhibited ethylene synthesis and ripening of mature green banana fruit slices and pericarp discs of mature green tomato fruit. It also inhibited ethylene production by cortical tissue from post-climacteric apples. Concentrations of Ag(I) which reduced ethylene synthesis had an inconsistent effect on CO2 production: no effect on banana slices (1.0 mm Ag+), stimulation in apple tissue (0.1 mm Ag+), and inhibition in tomato tissue (0.3 mm Ag+). This was accompanied by a slight amount of tissue necrosis at these concentrations. Of the 7 metallic salts tested, only Ag(I) inhibited ripening and ethylene synthesis at observed non-phytotoxic levels. Inhibition of ripening and ethylene synthesis by Ag(I) was evident in tissue treated with sufficient exogenous ethylene to elicit both responses in control tissue. The inability of applied ethylene to overcome the inhibitory effect of Ag(I) suggests that the silver ion may interfere with the primary action of ethylene in the tissue.
Abstract
‘Dayton’ is an attractive red apple (Malus × domestica Borkh.) with field immunity to apple scab incited by Venturia inaequalis (Cke) Wint. This apple is named in honor of Daniel F. Dayton, Emeritus Professor and longtime leader of the disease-resistance apple breeding program at the Univ. of Illinois.