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Anderson Machado de Mello, Nereu Augusto Streck, Erin E. Blankenship, and Ellen T. Paparozzi

us is Penstemon digitalis cv. Husker Red, because its tall showy flower spikes have potential as a specialty cut flower. Although cuttings are the preferred method of propagating ‘Husker Red’ penstemon, for locations and regions where cuttings are

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Dale T. Lindgren and Daniel M. Schaaf

digitalis Nutt. ‘Husker Red’ only with purple and/or red flowers instead of white flowers. Origin A cross was made in 1995 between Penstemon digitalis Nutt. ‘Husker Red’ ( Lindgren, 1984 ) with the pollen parent Penstemon ‘Prairie Splendor’ ( Penstemon

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In the June 2009 issue of HortScience , Table 3 was incorrect in the paper “Gibberellic Acid Promotes Seed Germination in Penstemon digitalis cv. Husker Red” [ HortScience 44(3):870–873]. The table titles “Growth chamber” and “Greenhouse” were

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Dale T. Lindgren and Daniel M. Schaaf

Studies were conducted to evaluate the effect of stratification and seed age on percent seedling emergence of Penstemon. Emergence differences occurred between the eight Penstemon selections, as well as between seed stratification treatments and seed age. Seed stratification significantly increased emergence. Emergence varied from 0% with 1-year-old seed of Penstemon digitalis with no stratification, to 72.8% emergence with 2-year-old seed of P. angustifolius with 10 weeks of stratification. Seedlings from 3- to 4-year-old seed generally emerged as well as or better than with 1- and 2-year-old seed. Percent emergence varied significantly with stratification, seed age, and species. Some emergence occurred with species from seed up to 10 years old.

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Paul B. Hedman, John M. Dole, Niels O. Maness, and Jeffrey A. Anderson

The postharvest biosynthesis of ethylene and CO2 was measured at 0, 12, 24, and 48 h after harvest and the effects of exogenous applications of 0.0, 0.2, or 1.0 μl·liter–1 ethylene for 20 h was observed on eight speciality cut flower species. Helianthus maximilliani (Maximillian's sunflower), Penstemon digitalis (penstemon), Achillea fillipendulina [`Coronation Gold' (yarrow)], Celosia plumosa [`Forest Fire' (celosia)], Cosmos bipinnatus [`Sensation' (cosmos)], Buddleia davidii (butterfly bush), and Weigela sp. (weigela) exhibited a climacteric-like pattern of ethylene production followed by a steady rise in CO2 production. Echinacea purpurea (coneflower) ethylene biosynthesis was not significant during the 48-h period after harvest. Vase life of coneflower, yarrow, celosia, cosmos, and butterfly bush was not affected by exogenous ethylene. Exogenous ethylene applications to Maximillian's sunflower, penstemon, and weigela resulted in flower abscission and decreased vase life, indicating that they are probably ethylene-sensitive cut flower species.

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Alicain S. Carlson and John M. Dole

Response of cut flower spikes of Penstemon digitalis ‘Husker Red’ to floral preservatives and chilling periods Bul. Amer. Penstemon Soc. 47 7 8 Mohan Ram, H.Y. Ramanuja Rao, I.V. 1977 Prolongation of vase-life of Lupinus hartwegii Lindl. by chemical

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Gina M. Angelella, Laura Stange, Holly L. Scoggins, and Megan E. O’Rourke

perennial species [pale purple coneflower– Echinacea pallida (Nutt.) Nutt., spotted bee balm– Monarda punctata L., showy evening primrose– Oenothera speciosa Nutt., and tall white beardtongue– Penstemon digitalis Nutt. ex Sims] ( Supplemental Table 1

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Stephanie Wedryk, Joel Felix, Doug Doohan, and John Cardina

-headed coneflower ( Ratibida pinnata ) at 0.10 g·m −2 , biennial gaura ( Gaura biennis ) at 0.10 g·m −2 , stiff goldenrod ( Solidago rigida ) at 0.11 g·m −2 , tall coneflower ( Rudbeckia laciniata ) at 0.11 g·m −2 , smooth penstemon ( Penstemon digitalis ) at 0.11 g

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Perennials ( Agastache ‘Red Fortune’ and Penstemon digitalis ‘Huskers Red’) in Low-Input Nursery Production Systems Nathan C. Phillips*, Jesse R. Traub, and Justin G. Gardner; Campus Box 5, School of Agribusiness and Agriscience, Middle Tennessee State

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colored plastic films on cut flower size and yield of Antirhinum majus ‘Sonnet Mix’, Penstemon digitalis ‘Husker's Red’, Achillea ’Coronation Gold’, and Dianthus barbatus ‘Bouquet Purple’ were evaluated at two locations, Auburn or Cullman, AL