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Victoria J. Ackroyd and Mathieu Ngouajio

length. Both root and shoot non-lyophilized aqueous extracts of oilseed radish affected radicle elongation of cucumber, honeydew, and muskmelon ( Fig. 2 ). As extract concentration increased, impact on radicle length became more pronounced. At the 50

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Jeff S. Kuehny and Mary C. Halbrooks

Episodic growth is a term used to define alternate episodes of root and shoot growth. Fresh weight gain of Ligustrum japonicum roots and shoots was continuous through each episode of shoot elongation. Root:shoot ratio, however varied over time and oscillated with each episode of shoot elongation. During shoot elongation the percent fresh weight (of whole plant weight) allocated to the shoot decreased while the percent allocated to roots increased. During cessation of shoot elongation the percent fresh weight allocated to the shoot increased; while percent allocated to roots decreased. Formation of lateral roots was synchronous with shoot elongation.

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Nguyen Phuc Huy, Vu Quoc Luan, Le Kim Cuong, Nguyen Ba Nam, Hoang Thanh Tung, Vu Thi Hien, Dung Tien Le, Kee Yoeup Paek, and Duong Tan Nhut

material for shoot multiplication of Paphiopedilum hybrids ( Huang et al., 2001 ). Nhut et al. (2007) studied the in vitro stem elongation of shoot-derived plantlets of P. delenatii to obtain stem nodes for effective shoot regeneration and

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Anish Malladi and Jacqueline K. Burns

rapidly after the root system is flooded or deprived of oxygen ( Jackson and Campbell, 1976 ). Leaf wilting and epinasty appear within hours of flooding, and reduction of shoot elongation, adventitious root formation, and chlorosis of leaves occur after

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Haijie Dou, Genhua Niu, Mengmeng Gu, and Joseph Masabni

shoot FW and DW. A novel finding of this study is that the effects of the inclusion of G wavelengths on stem elongation differed under different RP and/or BP or R:B ratios. In particular, under low BP of 12%, the inclusion of G wavelengths increased the

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Ariana P. Torres and Roberto G. Lopez

characteristics of floriculture seedlings and plugs are increased biomass (shoot and root), compactness (reduced internode elongation and proportional height), and adequate leaf area to promote growth and development after propagation ( Faust et al., 2005 ; Lopez

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Peter Alem, Paul A. Thomas, and Marc W. van Iersel

elongation also reduce overall growth and shoot biomass accumulation. Although plants that were exposed to WD were taller than PGR-treated plants ( Fig. 2 ), these treatments had similar shoot dry weight ( Fig. 5 ). It is not clear why the taller, WD

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Enio Tiago de Oliveira, Otto Jesu Crocomo, Tatiana Bistaco Farinha, and Luiz Antônio Gallo

. Surface disinfection treatments. Four hundred eighty apical buds explants, each ≈1 cm 3 , were isolated from young lateral shoots bearing six to nine leaves and disinfected using three different disinfection treatments (T 1, T 2 , and T 3 ) as shown in

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Ben Wherley, Ambika Chandra, Anthony Genovesi, Mason Kearns, Tim Pepper, and Jim Thomas

during Study 2. Over the course of the experiment, pots were fully watered to field capacity three times weekly. Leaf elongation rate was evaluated every 14 d (Weeks 2, 4, 6, 8, and 10) using a ruler to measure the average distance from the soil surface

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Luis A. Valdez-Aguilar, Catherine M. Grieve, and James Poss

. Shoots were harvested when most of the flower heads were fully opened. Flowers, leaves, and stems were washed twice in deionized water, blotted dry, placed in paper bags, and dried in an oven at 70 °C for 5 d. Measurements recorded for ‘Yellow Climax’ and