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Breeders of horticultural crops and agronomic crops have often adopted different strategies and systems of selection. Breeders of grain crops have a long tradition of quantitative approaches and of collecting objective data from large populations

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. Varieties adapted to diverse environments and matching consumer preferences must undergo rigorous evaluation using farmer and consumer participatory approaches in diverse production environments. Farmer participatory plant breeding or variety selection has

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considerable promise for breeding genetic resistance to CBB ( Kelly et al., 2003 ; Miklas et al., 2006 ). Molecular markers allow breeders to avoid direct screening techniques that may be less effective in selection of quantitative traits that are

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cold tolerance in seashore paspalum through traditional breeding efforts as a result of insufficient genetic variability in cold tolerance or the lack of cold-tolerant cultivated germplasm ( Duncan and Carrow, 1999 ). Somaclonal selection is a powerful

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determine the amount of intraspecific variability of Kentucky bluegrass cultivars and experimental selections to sequential applications of bispyribac-sodium herbicide. Materials and Methods This experiment was conducted in 2004 and 2005 at the Rutgers

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Agricultura Pesca y Alimentación, 1988 ) led to an increasing demand for ‘Albariño’ grapes and to the substitution of low-quality cultivars and the hybrids they produced (then typical of post-Phylloxera Galicia) by ‘Albariño’. Because no clonal selection had

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The Queensland strawberry breeding program aims to sustainably increase profitability for the producer by selecting superior genotypes. To be effective and efficient, selection must account for several traits simultaneously and focus on: 1) the most

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Abstract

Evaluation of the progeny populations from crosses between a resistant sweet corn inbred (Zea mays L.) and 3 susceptible inbreds indicated that the variation for partial resistance to corn leaf rust (Puccinia sorghi Schw.) depended on the parents used. Heritability estimates were high with both additive and dominance gene effects important in character expression. Epistasis was shown to influence rust reaction in at least one cross. The ability to improve partial resistance in 2 sweet corn populations was demonstrated by 3 methods of selection.

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Abstract

A 10-year analysis of the high-density nursery (HDN) in the breeding of low-chilling peach and nectarine [Prunus persica (L.) Batsch] cultivars indicated selection was effective during the first cropping year for chilling requirement, fruit development period, size, color, shape and firmness but not for crop load, which needs to be evaluated at normal spacing over several years. The HDN system effectively has advanced the breeding program by promoting short generation time, reducing labor and space, and allowing for rating of some characters within 2 years from seed.

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available. It is grown on sugar maple ( Acer saccharum ) rootstock, produces yellow to orange-red fall color, and is commercially available (J. Frank Schmidt, Boring, OR). ‘Western Torch’ wasatch maple ( A. grandidentatum ) is an identified selection with

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