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Florence M. Oxley, Tina M. Waliczek and Paula S. Williamson

More than 50 years ago, Elton (1958) warned of an impending global environmental crisis resulting from the spread of nonnative, invasive species. Today, nonnative, invasive species are recognized as one of the largest and most serious threats to

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Youbin Zheng and Mary Jane Clark

will allow for efficient Sedum plant production to meet the increasing industry demand. Growing substrate pH influences plant growth and performance, and different plant species have optimal substrate pH ranges that are unique ( Reed, 1996

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Frank Balestri and William R. Graves

Nyssa biflora Walt. (swamp tupelo) is indigenous to swamps and bottomlands of the southeastern United States. The species distribution comprises the coastal plain from Delaware to south Florida and east Texas, and extends north to southern Illinois

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J.J. Le Roux and J. Van Staden

Two cold-tolerant species (Eucalyptus macarthurii Deane et Maiden and E. smithii R.T. Baker), a cold-tolerant hybrid (E. macarthurii×E. grandis Hill ex Maiden), and E. saligna Sm. were propagated in vitro from nodal explants collected from field-grown seedlings and from clonal hedges. Shoot growth was initiated on modified Murashige and Skoog (MS) medium containing BA at 0.1 mg·liter-1. Modified MS medium with BA (0.2 mg·liter-1) and NAA (0.01 mg·liter-1) was most effective in promoting shoot proliferation. Root initiation was achieved on half-strength modified MS medium with 2 mg IBA/liter. Rooted plants were hardened and established in the field. Chemical names used: N-(phenylmethyl)-1EZ-purin-6-amine (BA); 2-(1-naphthyl)acetic acid (NAA); 1H-indole-3-butyric acid (IBA).

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Wenhao Dai and Cielo Castillo

The genus Buddleia consists of more than 100 species of which many are woody shrubs providing colorful and fragrant flowers for landscaping and gardening ( Dirr, 1998 ; Hogan, 2003 ). Native to China, buddleia plants are well adapted to various

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Hävard Eikemo, May B. Brurberg and Jahn Davik

the destructive oomycete Phytophthora cactorum (Lebert & Cohn) J. Schröt., which causes crown rot. P. cactorum causes disease in more than 200 plant species, including 150 genera representing 60 plant families, several of them within the rose

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Thomas Graham, Ping Zhang, Youbin Zheng and Michael A. Dixon

compounds in the water. Ozone that is not consumed through these pathways quickly converts to reactive oxygen-containing free radical species, all having very short (nanosecond) half-lives, and eventually to diatomic oxygen (O 2 ). The result of this

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Tim R. Pannkuk, Richard H. White, Kurt Steinke, Jacqueline A. Aitkenhead-Peterson, David R. Chalmers and James C. Thomas

evapotranspiration of turfgrasses, native grass species, tree species, and mixed species landscapes under different climates. An understanding of this relationship is critical to providing accurate recommendations for landscape irrigation based on ET o . A variety

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Phillip A. Wadl, Xinwang Wang, John K. Moulton, Stan C. Hokanson, John A. Skinner, Timothy A. Rinehart, Sandra M. Reed, Vincent R. Pantalone and Robert N. Trigiano

). They were first documented in humans ( Hamada et al., 1982 ) and later isolated and characterized in five tropical tree species ( Conduit and Hubbell, 1991 ). SSRs are polymerase chain reaction (PCR)based molecular markers valued for their abundant and

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Ryan S. Donahoo and Kurt H. Lamour

-value crops. Whether produced in ground beds or containers, these hosts are susceptible to at least nine species of Phytophthora ( Erwin and Ribeiro, 1996 ; Werres et al., 2001 ). Phytophthora cinnamomi, P. cactorum, P. cryptogea, P. lateralis, P