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M.E. El-Mahrouk, A.R. El-Shereif, Y.H. Dewir, Y.M. Hafez, Kh. A. Abdelaal, S. El-Hendawy, H. Migdadi, and R.S. Al-Obeed

material for the reversion experiments ( Fig. 1B ). Fig. 1. Reversion, rooting and acclimatization of hyperhydric banana ‘Grand Naine’ shoots. ( A ) Normal multiple shoots from the fourth subculture in Murashige and Skoog (MS) medium supplemented with 6

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

labeling techniques, such as fluorescent in situ hybridization and genomic in situ hybridization, and has proven valuable for characterizing hybrids in woody plants with small chromosomes ( Van Laere et al., 2010 ). Current root tip cytology consists of

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Nahla V. Bassil, William M. Proebsting, Larry W. Moore, and David A. Lightfoot

Hazelnut (Corylus avellana L.) softwood cuttings of the cultivars Ennis and Casina were propagated under mist during June and July 1987 and 1988. Rooting of stem cuttings was stimulated by both Agrobacterium and IBA treatment; however, IBA caused nearly complete bud abscission. Better rooting and bud retention were observed in `Casina' than in `Ennis' in 1988. Bud retention on Agrobacterium -inoculated cuttings improved as the cuttings approached the semi-hardwood stage. Six months after transplanting, Agrobacterium -inoculated hazelnut cuttings had an extensive root system, characteristic of hairy root. Although the mechanism remains unclear, strains of Agrobacterium rhizogenes are effective rooting agents in hazelnut and may cause less bud abscission than IBA. Chemical name used: 1 H -indole-3-butyric acid (IBA).

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Liang Zheng, Zibin Xiao, and Weitang Song

used for D. caryophyllus seedling production, which is economically important for high-scale breeding of elite commercial genotypes from stem cuttings of the mother plants ( Garrido et al., 1998 ). Adventitious rooting is an essential step in the

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Sudeep Vyapari, S.M. Scheiber, and E.L. Thralls

growth, and absence of discolored or damaged leaves ( Brand and Leonard, 2001 ). There is little evidence that indicates consumers pay attention to root ball condition at purchase, yet landscape establishment is affected by the condition of root systems

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JinSheng Huang and Paul V. Nelson

31 POSTER SESSION 5 (Abstr. 485-512) Floriculture: Aerial and Root Environments

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Thomas R. Sinclair, Andrew Schreffler, Benjamin Wherley, and Michael D. Dukes

A key aspect in the establishment of turfgrass sod is rapid rooting or “knitting” of the sod into the underlying soil. Factors that ensure rapid sod rooting include 1) proper soil aeration; 2) adequate moisture in the underlying soil; and 3

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Jinhong Yuan, Man Xu, Wei Duan, Peige Fan, and Shaohua Li

the damage of photosynthetic apparatus, imposing a non-stomatal limitation to photosynthesis ( Ennahli and Earl, 2005 ; Farquhar and Sharkey, 1982 ). Partial root zone drying (PRD) is an irrigation strategy that applies water to only one part of the

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Matthew B. Bertucci, David H. Suchoff, Katherine M. Jennings, David W. Monks, Christopher C. Gunter, Jonathan R. Schultheis, and Frank J. Louws

). Research has focused on cucurbit rootstock root system physiology to help explain this improved tolerance; however, research has only been conducted with figleaf gourd ( Cucurbita ficifolia ) and is limited to suboptimal soil temperatures ( Lee et al., 2005

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Eric M. Lyons, Robert H. Snyder, and Jonathan P. Lynch

Healthy root systems are essential to maintain turfgrass quality in the demanding environment of golf greens. Increased rooting of creeping bentgrass on golf greens can increase drought tolerance ( DaCosta and Huang, 2006 ), nitrogen uptake