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Abigail R. Debner, Harlene Hatterman-Valenti, and Fumiomi Takeda

) blackberry plants that develop a flower shoot and fruit within several months. Cuttings would be taken during the dormant season to root, flower, and fruit for an annual high-density (≈75,000 potted plants/acre) production system that should produce ≈5000 lb

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Dennis N. Katuuramu, W. Patrick Wechter, Marcellus L. Washington, Matthew Horry, Matthew A. Cutulle, Robert L. Jarret, and Amnon Levi

improved root traits and water-use efficiency. With the increasing global population and the dwindling availability of arable land, it is critical to develop plant germplasm that can perform optimally under these new crop production constraints ( Gilliham

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James L. Green, R.G. Linderman, B. Blackburn, and K.A. Smith

114 WORKSHOP 18 Advanced Root and Rhizosphere Analysis Systems

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Zhipei Feng, Xitian Yang, Hongyan Liang, Yuhua Kong, Dafeng Hui, Jiabao Zhao, Erhui Guo, and Beibei Fan

Root structure is crucial for plant adaptation to changing environments and plays a pivotal role in determining root functionality ( Dara et al., 2015 ; Seago and Fernando, 2013 ; Sun et al., 2008 ). A well-developed and well-structured root

Open access

Arthur Villordon, Jeffrey C. Gregorie, and Don LaBonte

). However, it is possible to increase Pi recovery in the range of 50% to 70% by optimizing application amounts based on critical soil Pi thresholds and optimization of placement relative to the root zone ( Roberts and Johnston, 2015 ). Therefore, even though

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Arthur Q. Villordon, Don R. La Bonte, Nurit Firon, Yanir Kfir, Etan Pressman, and Amnon Schwartz

soils or delays its establishment until environmental conditions improve. The resulting canopies under the two scenarios appear similar; however, root development is profoundly different. Yield variability is likely a function of variability in early

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Thomas E. Marler

the neighbor’s fitness through altruism ( Axelrod and Hamilton, 1981 ). The most prevalent response variables in this body of research are various root growth traits. Other responses to belowground neighbor identity reported to date include plant

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Rebecca L. Darnell, Horacio E. Alvarado-Raya, and Jeffrey G. Williamson

yields observed in perennial red raspberry production systems ( Alvarado-Raya et al., 2007 ; Darnell et al., 2006 ). This may be from disturbance of the root system during digging and shipment from the nursery, which can lead to significant root loss

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K.A. Roubelakis-Angelakis and S.B. Zivanovitc

A modified culture medium is presented that promotes in vitro rooting of grapevine rootstock and Vitis vinifera L. cultivars even in the absence of plant growth regulators. Study of 15 Vitis genotypes indicated a strong genotype-dependent response to culture medium and growth regulators with respect to formation of roots in onenode shoot segments.

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Cristian Silvestri, Gianmarco Sabbatini, Federico Marangelli, Eddo Rugini, and Valerio Cristofori

postexposure effect of wolfberry varieties on Murashige and Skoog (MS) medium and the nonuniformity of the explants used for rooting induction. On the contrary, numerous papers have described regeneration by adventitious shoot organogenesis and somatic