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Michael S. McCoy, Kathleen M. Kelley, and Dan T. Stearns

selection decision ( Ettenson and Turner, 1997 ). In contrast, when choosing services from nonprofessionals, such as dry cleaners and hair stylists, the factor's order of importance differed depending upon which nonprofessional service was sought ( Ettenson

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Sergio Jiménez, Jorge Pinochet, Anunciación Abadía, María Ángeles Moreno, and Yolanda Gogorcena

commercial rootstocks. Traditional selection procedures used to detect tolerance to iron chlorosis are based on field evaluation ( Socias i Company et al., 1995 ). However, this practice requires long evaluation periods, is time consuming, and is very

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Felipe Barrera Sánchez, Larissa Pereira Ribeiro, Mayara Fávero Cotrim, Carlos Antonio da Silva Junior, Leonardo Lopes Bhering, and Paulo Eduardo Teodoro

., 2005 ). The association of production components with the soluble solids content in cherry tomatoes allows the selection of promising genotypes ( Araújo et al., 2016 ; Sánchez et al., 2019 ). Because of the high demand and the search for new hybrids

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Jung Hyun Kwon, Ji Hae Jun, Eun Young Nam, Kyeong Ho Chung, Ik Koo Yoon, Seok Kyu Yun, and Sung Jong Kim

Tomes, 1943 ; Jun et al., 2010 ; Okie and Weinberger, 1996 ). Therefore, evaluating pollen viability among cultivars is an important process in the selection of a suitable pollinizer. In addition, the bloom periods of the pollinizer and main cultivar

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Colleen Kennedy, Luis F. Osorio, Natalia A. Peres, and Vance M. Whitaker

for genetic gains using recurrent selection methodologies. However, these studies also suggest that heritability estimates are characteristic of individual populations and environments. Furthermore, genetic parameters may change over time as

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Virginia M. Moore and William F. Tracy

achieved by shortening the ear rather than actually lengthening the husk. The goals of this research were to determine the feasibility of selecting a sweet corn population for longer husks without shortening the ears, to determine whether direct selection

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Sandra B. Wilson, Julia Rycyna, Zhanao Deng, and Gary Knox

to determine 1) if the selection displays invasive traits that cause greater ecological impact than the wild-type or resident species and if it can be readily distinguished; and 2) the fecundity of the selection and its chances of regression or

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Katrina J.M. Hodgson-Kratky, Olivier M. Stoffyn, and David J. Wolyn

recurrent selection at −0.8 MPa increased germination of sand bluestem ( Andropogon hallii ) nearly 2-fold in vitro ( Springer, 2011 ; Springer et al., 2014 ). In the field, establishment increased 16.4% compared with the base population ( Springer et al

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Thomas A. Greene

Height and caliper (age 3 years), and flower count (age 3.5 years) were evaluated for 36 open-pollinated families of Magnolia grandiflora L. outplanted in two genetic tests in Bexar County, Texas. Significant family differences existed for height, caliper, number of flowers per tree, and percent of trees flowering in both tests. Family heritability estimates for all traits ranged from 0.72 to 0.92. Coefficients of genetic prediction (CGP) between growth and flowering characteristics were small but positive; CGP between height and percent of trees flowering was 0.28 and 0.24 in the two tests. Early growth rate and flowering appeared to be under strong genetic control; thus, improvement through selection would be efficient. However, both traits should be evaluated since the genetic relationship between them was weak.

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Jyh-Bin Sun, Ray F. Severson, William S. Schlotzhauer, and Stanley J. Kays

Thermal degradation of fractions from sweetpotato roots (`Jewel') was conducted with gas chromatographymass spectrometry to identify precursors of critical flavor volatiles. Upon heating (200 C), sweetpotato root material that was insoluble in methanol and methylene chloride produced similar volatile profiles to those from sweetpotatoes baked conventionally. Volatiles derived via thermal degradation of the nonpolar methylene chloride fraction and the polar methanol fraction did not display chromatographic profiles similar to those from conventionally baked sweetpotatoes. Initial reactions in the formation of critical volatiles appear to occur in the methanol and methylene chloride insoluble components. Maltol (3-hydroxy-2-methyl-4-pyrone) was found to be one of the critical components making up the characteristic aroma of baked sweetpotatoes. Integration of an analytical technique for the measurement of flavor into sweetpotato breeding programs could potentially facilitate the selection of improved and/or unique flavor types.