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Rui Zhang, Fang-Ren Peng, Pan Yan, Fan Cao, Zhuang-Zhuang Liu, Dong-Liang Le, and Peng-Peng Tan

sold as bare root trees. The root system predominantly consists of a taproot with weak lateral roots during the first year after pecan seed germination. The taproot will penetrate the soil up to 2 m unless stopped by a water table or an impervious layer

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Benjamin D. Taylor and Benjamin K. Hoover

Cathey, 2004 ). Wall germander can be propagated from cuttings without adding auxin, but rooting is more rapid and uniform with the application of 1000–3000 ppm IBA ( Dirr and Heuser, 2006 ). Auxins are a class of plant growth regulators that affect many

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Dilma Silva, Donald Cox, and Richard C. Beeson Jr

and small sample sizes, especially for woody plants with extensive root systems. Analysis of entire root systems from woody plants is particularly important, because they can allocate up to 69% of their resources to root development ( Vogt et al., 1995

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Hilda E. Lee-Espinosa, Joaquín Murguía-González, Benjamín García-Rosas, Ana L. Córdova-Contreras, Antonio Laguna-Cerda, Javier O. Mijangos-Cortés, Luis F. Barahona-Pérez, Lourdes G. Iglesias-Andreu, and Nancy Santana-Buzzy

), protocorms and root apex ( Philip and Nainar, 1986 ), axillary buds ( George and Ravishankar, 1997 ; Giridhar and Ravishankar, 2004 ; Kononowicz and Janick, 1984 ), and shoot tips ( Geetha and Sudheer, 2000 ). However, the efficiency of these reported

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Jinmin Fu, Jack Fry, and Bingru Huang

transition zone of the United States is often practiced on tall fescue, a turfgrass that is popular in the transition zone of the United States as a result of its heat tolerance and ability to avoid drought with deep rooting. However, under well

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Maria Papafotiou and Aekaterini N. Martini

culture times for root induction, to develop an efficient micropropagation protocol for commercial use. Materials and Methods In vitro seed germination. Seeds were collected in Aug. 2012 from selected T. capitatum wild plants in the region of “Diomedes

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Karen K. Schneck, Cheryl R. Boyer, and Chad T. Miller

market date and has been reported in different dahlia series and breeding lines. Reported dahlia decline symptoms include plants exhibiting reduced rooting quality, graying foliage, foliage wilting, and plant death. Growers have indicated that plant

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W. Garrett Owen and Roberto G. Lopez

-light conditions increase rooting time, do not maximize root production, and result in low-quality liners. For example, crop time from division to a marketable 50-cell liner tray (106.5-mL individual cell volume) from fall to early winter, late winter to early

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Susan L. Barkley, Sushila Chaudhari, Jonathan R. Schultheis, Katherine M. Jennings, Stephen G. Bullen, and David W. Monks

’ sweetpotato, released by the North Carolina Agricultural Research Service in 2005, accounts for 88% of certified seed root acreage in North Carolina, followed by ‘Beauregard’ and ‘Evangeline’ at 5% and 3%, respectively ( North Carolina Crop Improvement

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Maria P. Fuentealba, Jing Zhang, Kevin E. Kenworthy, John E. Erickson, Jason Kruse, and Laurie E. Trenholm

to the plant’s ability to increase water uptake by developing a deep, extensive, and viable root system; and to reduce water loss through stomatal control ( Huang, 2008 ; Huang et al., 1997a , 1997b ). Determining genetic potential in various root