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, and R. sempervirens are most frequent ( Martincic et al., 1999 ). Numerous rose cultivars are widely planted in gardens and parks for their aesthetic value and native plants are harvested for their fruit and flowers. Medicinal benefits of the genus

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; Zhang et al., 2015b ). Many pecan cultivars have been bred and developed in the United States, with rich variations in their leaves, flowers, nuts, and other characteristics. Through more than 100 years of introduction and cultivation, more than 100

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peach cultivars. We gratefully acknowledge A. Moing, P. Raymond, I. Couée, and M.A. Hooks for advice and critical reading of the manuscript. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations

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), Fernanda Lampreia, and António Moacho (DGPC) for supplying plant material from the rest of pear cultivars, as well as António Monteiro (ISA) for critical reading of the manuscript. The cost of publishing this paper was defrayed in part by the payment of

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significantly over the past few years in response to recent high blueberry demand and prices. Through 2005, the most common RAB cultivars grown in Louisiana and Mississippi were Climax, Premier, and Tifblue ( Marshall et al., 2006 ). ‘Tifblue’ has been

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( Patton, 2009 ). Zoysiagrass has been slowly increasing in use across the United States since it was introduced ≈1900. The cultivars Meyer and Emerald were released in the 1950s and are considered to be the industry standards for zoysiagrass ( Patton, 2009

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The release of ‘Tifgreen’ bermudagrass in 1956 launched the era of vegetatively propagated turfgrasses using a production method that preserved the initial hybrid vigor of new cultivars barring genetic instability ( Hanna and Anderson, 2008

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Forty-five crabapple (Malus spp.) cultivars were evaluated for 16 isozyme systems by starch gel electrophoresis. Of the 16 systems evaluated, 6 were useful in separating among cultivars. Enzyme systems used to distinguish among the cultivars included alcohol dehydrogenase, aspartate aminotransferase, malate dehydrogenase, 6-phosphogluconate dehydrogenase, phosphoglucoisomerase, and shikimate dehydrogenase. Each enzyme system produced one well-resolved polymorphic region except for 6-phosphogluconate dehydrogenase, which produced two. Most crabapple selections could be identified when all six enzymes were evaluated. Alcohol dehydrogenase had the most diagnostic banding patterns useful for cultivar identification.

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Herbaceous peony, a perennial herb with a cultivation history exceeding 3000 years, is a famous traditional Chinese flower ( Li, 1999 ). It displays graceful petals and abundant colors, and many cultivars have elegant fragrance, an important

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The waiting-bed (WB) system has the potential to significantly increase the length of the strawberry (Fragaria Xananassa Duch.) production season. In the WB phase of this system the plants were deblossomed and runners were removed to stimulate the production of a multiple crowned plant. The objective of this study was to examine the influence of planting date and cultivar on yield potential and vegetative growth of the strawberry plants in the WB and cropping beds (CB). Experiments were conducted in Ontario and Quebec. Early establishment of the WB favored the production of large multicrown plants. `Kent' appeared to be the best cultivar among five tested due to the many berries produced because of good fruit set. Yield potential was not realized in late-planted CB. The highest yields per plant (273 g) were obtained in Quebec with plants from the earliest WB. Yields in CB decreased with later plantings due to stress of transplanting when air and soil temperatures were high. Berry count was identified as the yield component most affected by the later planting date of the CB. The WB system has potential for season extension in strawberry, but WB must be established early in the season to encourage the development of a plant with high yield potential.

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