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Teresa E. Seijo, Natalia A. Peres, and Zhanao Deng

continued breeding effort will be required. Because of their resistance to fusarium tuber rot (FTR), caused by Fusarium solani (Mart.) Saa., and to Pythium root rot (PRR), caused by Pythium myriotylum Drechs. ( Deng et al., 2005a , 2005b ; Goktepe et

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Jason D. Lattier, Hsuan Chen, and Ryan N. Contreras

(Vectashield; Vector Laboratories). Roots tips for FISH were collected from softwood cuttings of tetraploid Bali™, hexaploid ‘Pink Giant’, octoploid OP2014-19, and a random sample of putative pentaploids from interploid crosses. Root tip pre-fixative, fixative

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Maureen M.M. Fitch, Terryl C.W. Leong, Xiaoling He, Heather R.K. McCafferty, Yun J. Zhu, Paul H. Moore, Dennis Gonsalves, Herb S. Aldwinckle, and Howard J. Atkinson

flower productivity, preferred flower shapes and colors, long vase life, pest resistance, and vigorous plant growth are sought in breeding programs ( Kamemoto and Kuehnle, 1996 ). Plants lacking one or more of these attributes often remain in production

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Gehendra Bhattarai, Shawn A. Mehlenbacher, and David C. Smith

spread of EFB, these control measures are expensive, reduce nut yield, and are not completely effective ( Johnson et al., 1996 ). Given the environmental and economic concerns associated with chemical control, host genetic resistance is viewed as the most

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Zhanao Deng, Fahrettin Goktepe, Brent K. Harbaugh, and Jinguo Hu

, and short bar = lance), main vein color and impact color (solid square, open square, solid circle, and open circle = green, white, red, and pink, respectively), presence of spots or blotches (⊕), and stress tolerance, and/or pest resistance (S = sun

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Xiaohe Song and Zhanao Deng

, 2010 ; Kloos et al., 2005 ; Mata et al., 2009 ; Rogers and Tjia, 1990 ). A very important objective in gerbera breeding is to improve plant resistance to major fungal diseases, particularly PM ( Deng and Harbaugh 2010 ; Kloos et al., 2005 ). PM on

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Barbara J. Smith

covered with pink spore masses. Colletotrichum acutatum also causes root lesions. ANTHRACNOSE INFECTION PROCESS AND PATHOGEN DISPERSAL Curry et al. (2002) studied the infection process of strawberry petioles and stolons by C. acutatum and C

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Shahrokh Khanizadeh, Yvon Groleau, Odile Carisse, Vicky Toussaint, Raymond Granger, and Gilles Rousselle

). Description of Self-rooted Trees Own-rooted trees began flowering in L'Acadie, Quebec, on 14 May compared with ‘M.26’, which began flowering on 23 May. The color of the buds in full balloon stage is greenish white with a pattern of pink, pedicels are green

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Cary L. Rivard and Frank J. Louws

systems. These pathogens are particularly challenging for organic heirloom growers as a result of lack of major resistance genes within these cultivars and long rotation intervals required to reduce pathogen populations in the soil. Bacterial wilt (BW

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Candace N. DeLong, Keith S. Yoder, Leon Combs, Richard E. Veilleux, and Gregory M. Peck

acid (10 mg·L −1 ) medium by calculating the percent germination ( Williams and Maier, 1977 ). Mature ‘Autumn Rose Fuji’/‘M.9’, ‘Golden Delicious’/‘M.27’, and ‘Cripps Pink’/‘M.9’ trees grown in 19-L root bags (Lacebark, Stillwater, OK) were the maternal