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Impatiens walleriana (bedding impatiens) is a colorful shade-tolerant annual that is widely used in the landscape and in hanging baskets. This species flowers in shade during most summer months (June to August) and is among the more affordable

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differences among inbred lines for floral longevity ( P < 0.001), from which 12 inbreds were selected for diallel analysis ( Table 1 ). Table 1. Average floral longevity of Impatiens walleriana inbreds used in the diallel design. Hybrids. Mean floral

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Garden impatiens ( I. walleriana , Balsaminaceae) has been a top-selling bedding plant in the United States, generating an estimated wholesale value of 150 million dollars in 2005 ( USDA/NASS, 2006 ). This plant’s popularity in the floriculture and

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Three cultivars of New Guinea impatiens (Impatiens hawkeri) and two cultivars of double impatiens (I. walleriana) were grown in greenhouses maintained at 15, 20, and 25 °C. Bud diameter was measured twice weekly on five plants per cultivar from the time of visible bud to open flower. The experiment was repeated twice. For New Guinea impatiens, the time from visible bud (1-mm diameter) to open flower was 31, 43, and 72 days at 25, 20 and 15 °C, respectively. Flower bud diameter increased linearly as the bud expanded from 1 to 9 mm. For double impatiens, the time from visible bud (1-mm diameter) to open flower was 25, 30, and 58 days at 25, 20 and 15 °C, respectively. Flower bud diameter increased at an increasing rate (curvilinear response) as the bud expanded from 1 to 8 mm. These models are currently in commercial use to aid greenhouse growers in accurately timing crops for specific market dates.

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; Han, 2003 ) and I. walleriana can benefit from 1-MCP protection to improve postharvest quality ( Han, 2003; Skog, 2001). Impatiens , therefore, can serve as an excellent model plant to investigate the use and efficacy of this novel 1-MCP

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disease progress curve (AUDPC) for incidence and severity z of white mold in field-inoculated annual bedding plants. Discussion This is a first report of susceptibility of Impatiens hawkeri, Impatiens walleriana, Pentas lanceolata, Portulaca grandiflora

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.S.), respectively (U.S. Census Bureau, 2020). The genus Impatiens includes several popular ornamental species valued in the floriculture industry for their highly decorative flowers and long blooming season. Bedding plant impatiens ( Impatiens walleriana ) have

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-ABA application for enhancing drought tolerance. Bedding plants were obtained from Green Circle Growers Inc. (Oberlin, OH) and The Greenhouse Shoppe (Wooster, OH). Species included Impatiens walleriana ‘Xtreme Lavender’, Pelargonium × hortorum ‘Maverick Red

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’), impatiens ( Impatiens walleriana ‘SuperElfin XP Red’), and petunia ( Petunia × hybrida ‘Wave Pink’) were sown in 128-cell (2.7 × 2.7 cm; 12.0-mL volume) plug trays at a commercial greenhouse (C. Raker and Sons, Inc., Litchfield, MI). On arrival at

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Deep Orange’, impatiens ( Impatiens walleriana ) ‘Accent Premium Salmon’, petunia ( Petunia × hybrida ) ‘Ramblin Peach Glo’, and tuberous begonia ( Begonia × tuberosa ) ‘Nonstop Rose Petticoat’ were sown into 128-cell trays (2.7 × 2.7 cm; 12.0-mL

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