2 HORTSCIENCE VOL. 48(1) JANUARY 2013

HortScienceVolume 48, Number 1 CONTENTS January 2013

FEATURE 4 The ASHS Outstanding Fruit Cultivar Award:

A 25-year Retrospective Gayle M. Volk, James W. Olmstead, Chad E. Finn, and Jules Janick

REPORTS

Breeding, Cultivars, Rootstocks, and Germplasm Resources 13 Evaluation of Apple ( Malus × domestica ) Genetic

Resources in Bosnia and Herzegovina Using Microsatellite Markers

Fuad Gasi, Silvio Simon, Naris Pojskic, Mirsad Kurtovic, Ivan Pejic, Mekjell Meland, and Clive Kaiser

22 Taro ( Colocasia esculenta ) Transformed with a Wheat Oxalate Oxidase Gene for Improved Resistance to Taro Pathogen Phytophthora colocasiae

Xiaoling He, Susan C. Miyasaka, Maureen M.M. Fitch, Sawsan Khuri, and Yun J. Zhu

28 Reaction of Peach Genotypes to Bacterial Leaf Spot: Correlations with Environmental Conditions, Leaf Phenology, and Morphology

Marcos R. Sachet, Idemir Citadin, Silvia Scariotto, Idalmir dos Santos, Pedro H. Zydek, and Maria do Carmo B. Raseira

Crop Production 34 Graft Angle and Its Relationship to Tomato Plant Survival

Michael G. Bausher 37 Serial Transmission of Plant Viruses by Cutting

Implements during Grafting Michael G. Bausher

40 Influence of Mechanical String Thinning Treatments on Vegetative and Reproductive Tissues, Fruit Set, Yield, and Fruit Quality of ‘Gala ’ Apple

Thomas M. Kon, James R. Schupp, H. Edwin Winzeler, and Richard P. Marini

47 Temperature-induced Glucosinolate Accumulation Is Associated with Expression of BrMYB Transcription Factors

Veronica L. Justen and Vincent A. Fritz

Disease and Pest Management 53 Effects of Host Plant Resistance and Fungicides on

Severity of Cucumber Downy Mildew Adam D. Call, Todd C. Wehner, Gerald J. Holmes, and Peter S. Ojiambo

60 Vertical Stratification of Predation on Aulacaspis yasumatsui Infesting Cycas micronesica Seedlings

Thomas E. Marler, Ross Miller, and Aubrey Moore 63 Evaluation of Response to Pecan Scab Pathogen Race

Using a Detached Leaflet Protocol Patrick J. Conner

68 Evaluating Paradox Walnut Rootstocks for Resistance to Armillaria Root Disease

Kendra Baumgartner, Phillip Fujiyoshi, Greg T. Browne, Chuck Leslie, and Daniel A. Kluepfel

Growth Regulators 73 Influence of Prohexadione Calcium on Sweetpotato

Growth and Storage Root Yield Victor N. Njiti, Qun Xia, Leonna S. Tyler, Lakeisha D. Stewart, Antione T. Tenner, Chunquan Zhang, Dovi Alipoe, Franklin Chukwuma, and Ming Gao

77 Dark-stored Flurprimidol Solutions Maintain Efficacy Over Many Weeks

William B. Miller

Marketing and Economics 82 Physiological and Psychological Response to

Floral Scent Hyunju Jo, Susan Rodiek, Eijiro Fujii, Yoshifumi Miyazaki, Bum-Jin Park, and Seoung-Won Ann

20 Image Analysis Systems for Plant ScienceImage Analysis Systems for Plant Sciencewww.regentinstruments.com

WinRHIZO™WinRHIZO™The complete product family

for root analysis

WinFOLIA™WinFOLIA™Leaf area meter, morphology

and pest damage analyser

WinSEEDLE™WinSEEEDDLE™Seed and needle morphology

and pest damage analyser

HORTSCIENCE VOL. 48(1) JANUARY 2013 3

Postharvest Biology and Technology 89 Pungency of Red Radish Storage Roots Is Unaffected

by Spent Mushroom Substrate or Yard Waste Compost Treatments Used for Field Production

Brian A. Kahn, Niels O. Maness, Donna R. Chrz, and Lynda K. Carrier

92 Tailoring Organic Apples by Cultivar Selection, Production System, and Post-harvest Treatment to Improve Quality and Storage Life

Ibrahim I. Tahir and Hilde Nybom

Propagation and Tissue Culture 102 Season and Explant Origin Affect Phenolic Content,

Browning of Explants, and Micropropagation of × Malosorbus florentina (Zucc.) Browicz

Aekaterini N. Martini, Maria Papafotiou, and Stavros N. Vemmos

108 Conventional and In Vitro Propagation of Lechenaultia macrantha (Goodeniaceae)

Guochen K. Png, Katherine S. Downes, and Beng H. Tan

Soil Management, Fertilization, and Irrigation 115 Nitrification in Pine Tree Substrate Is Influenced

by Storage Time and Amendments Linda L. Taylor, Alexander X. Niemiera, Robert D. Wright, Gregory K. Evanylo, and Wade E. Thomason

CULTIVAR AND GERMPLASM RELEASES 123 Vernicia fordii ‘Anna Bella ’ , a New Ornamental

Tung Tree Timothy A. Rinehart, Ned C. Edwards, and James M. Spiers

126 ‘Gulfsnow ’ Peach Thomas G. Beckman, Jose X. Chaparro, and Patrick J. Conner

128 ‘Lane ’ : An Early-season Self-fertile Black Muscadine Grape Patrick J. Conner

130 ‘Pearl ’ Southern Highbush Blueberry Stephen J. Stringer, Arlen D. Draper, James M. Spiers, Donna A. Marshall, and Barbara J. Smith

ON THE COVERWe recognize the recipients of the ASHS Outstanding Fruit Cultivar Award in honor of its 25th anniversary. The 2012 award recipients are ‘Black Diamond’ blackberry, bred by C.E. Finn, R.R. Martin, B.C. Strik, B.M. Yorgey, M. Qian, and H.K. Hall (shown left, photo credit C.E. Finn, USDA-ARS), and ‘Sweetheart’ cherry, bred by D. Lane (shown right, photo credit Neal Manly, Willow Drive Nursery). For more information, see the Feature by Volk et al. on p. 4.