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Ana Fita, Belén Picó, Antonio J. Monforte, and Fernando Nuez

genetically controlled allometry space Proc. Natl. Acad. Sci. USA 102 10221 10226 Li, Z. Mu, P. Li, C. Zhang, H. Li, Z. Gao, Y. Wang, X. 2005 QTL mapping of root traits in a

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Katrin Kahlen and Hartmut Stützel

. Goudriaan, J. 1998 Modeling biomass production and yield of horticultural crops: A review Sci. Hort. 74 83 111 Niklas, K.J. 1994 Plant allometry: The scaling of form and process The University of Chicago Press

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Michael W. Smith and Bruce W. Wood

Allometric equations were developed for orchard-grown pecan [Carya illinoinensis (Wangenh.) C. Koch] trees. Trees, ranging in size from 22 to 33 cm in trunk diameter 1.4 m above the ground, were destructively harvested from two sites. The entire aboveground portion of each tree was harvested and then divided into leaves, current season's shoots, and branches ≥1 year old plus trunk. Roots were sampled by digging a trench beginning beneath the trunk and extending to one-half the distance to an adjacent tree, then separating the roots from the soil. Roots were then divided into those less than 1 cm in diameter and those ≥1 cm in diameter. Equations in the form Y = eaXb were developed to estimate dry biomass of most tree components and the whole tree, where Y is the dry weight, e is the base of the natural logarithm, X is the trunk diameter at 1.4 m above the ground, and a and b are coefficients. A linear equation provided the best fit for estimating the weight of the current season's growth. Power equations were also developed to estimate the weights of inner bark and wood for different size trunks or branches.

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Daniel I. Leskovar and Daniel J. Cantliffe

Transplants produced with overhead or subirrigation and plants from direct seeding using primed or nontreated `Jupiter' bell pepper (Capsicum annuum L.) seeds were evaluated for growth and yield in the field for 3 years. Early in development, overhead-irrigated (01) transplants had more basal root elongation than subirrigated (SI) transplants; however, root growth differences caused by irrigation systems in the greenhouse were minimized during late ontogeny in the field. Basal, lateral, and taproot dry weights accounted for 81%, 15%, and 4% of the total for transplants and 25%, 57%, and 18% of the total for direct-seeded plants. Direct-seeded plants maintained a more-balanced root, stem, leaf, and fruit dry matter partitioning than transplants, which allocated more dry weight (per unit of root growth) to stems, leaves, and fruits. Over all seasons, transplants exhibited significantly higher and earlier yields than direct-seeded pepper plants, and total yields were similar between SI and OI transplants and between primed and nontreated seeds.

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Xiongwen Chen and Hua Chen

variance with mean body size is predicted from Taylor’s law and density-mass allometry Proc. Natl. Acad. Sci. USA 109 15829 15834 Crone, E.E. Rapp, J.M. 2014 Resource depletion, pollen coupling, and the ecology of mast seeding Ann. N. Y. Acad. Sci. 1322 21

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Jack B. Fisher, Anders Lindström, and Thomas E. Marler

Indian Coconut J. 15 12 14 Niklas, K.J. Cobb, E.D. Marler, T. 2006 A comparison between the record height-to-stem diameter allometries of pachycaulis and leptocaulis species Ann. Bot. (Lond.) 97 79 83 Niklas, K.J. Marler, T.E. 2008 Sex and population

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Ben van Hooijdonk, David Woolley, Ian Warrington, and Stuart Tustin

:scion dry weight ratio compared with R.G ( Fig. 2D ). Allometry between root and scion. The allometric coefficients ( k ) or slopes of fitted major axis regression lines ( Fig. 3 ) were similar among rootstocks in either the December to February (χ 2 = 2

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James F. Cahill and Eric G. Lamb

traits J. Veg. Sci. 8 489 494 Shipley, B. 2000 Cause and correlation in biology Cambridge University Press UK Shipley, B. Meziane, D. 2002 The balanced-growth hypothesis and the allometry

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Toshio Shibuya, Ryosuke Endo, Yoshiaki Kitaya, and Mizuki Tsuchida

. Terashima, I. 1995 Relationships between height, diameter and weight distributions of Chenopodium album plants in stands: Effects of dimension and allometry Ann. Bot. 75 181 188 Park, Y. Runkle, E.S. 2017 Far-red radiation promotes growth of seedlings by

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Kevin Fort, Joaquin Fraga, Daniele Grossi, and M. Andrew Walker

non-‘Riparia’ genotypes. Studies of plant allometry ( Schenk and Jackson, 2002a , 2002b ) confirm that relatively deeper root distributions are often found in more arid environments when canopy size is held constant. Nevertheless, simple, strong, and