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Alice Le Duc, Robert P. Adams, and Ming Zhong

Van Melle (1947) proposed that juniper cultivars of the Pfitzer Group were of hybrid origin and ascribed the name Juniperus ×media Melle. This purported hybrid of J. chinensis L. × J. sabina L. has not been accepted unanimously by the horticultural community. Random amplified polymorphic DNAs (RAPDs) were used to analyze and establish new evidence for the hybrid origin of the Pfitzer Group, using both parents and seven cultivars of the Pfitzer Group. Principal coordinate analysis (PCO) of 122 RAPD bands demonstrated that samples of J. chinensis cluster tightly together, as do the J. sabina samples. Cultivars of the Pfitzer Group lacked affinity with either species, but stood apart as a distinct cluster. The data support Van Melle's conclusion that the Pfitzer Group is separate from J. chinensis and indicate hybrid origin from parents J. chinensis and J. sabina. We recognize Juniperus ×pfitzeriana (Späth) Schmidt [Pfitzer Group] as the correct name for cultivars of Pfitzer junipers. Juniperus ×media, proposed by Van Melle, was rendered illegitimate because of the earlier name J. media V.D. Dmitriev.

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Kh. A. Okasha and R. M. Helal

Salt tolerance of four okra cutivars namely : white velvet ; Gold coast ; Balady and Eskandarani, were investigated during three different stages of plant development namely : seed germination, seedling and reproductive stages. At both first and second stages of plant development various concentrations of sea water (diluted with tap water) were used for irrigation while at the third stage, various saline water with different electronic conductivities were used for irrigation

Results of these studies revealed that salinity reduced and delayed seed germination At this stage, white velvet cv. appeared to be tolerant to salinity. At the seedling stage, salinity generally reduced hash weight of plant for all tested cuitivars and Gold coast was the lead affected one At the reproductive stage, salinity reduced plant growth and total yield/plant but with different degrees depending upon cultivar In this respect, yield of both Gold coast and Balady was not greatly reduced at the high level of salinity

The anatomical studies showed that salinity reduced xylem and phloem elements in okra roots depending upon both salinity level and cultivar

Generally, the obtained results suggest that both Gold coast and Balady okra cultivars can considered as tolerant genotypes to salinity and recommended for cultivation in both and and semi-arid lands where salinity is considered a potential problem

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Julio Loaiza and Marita Cantwell

1 Graduate Student. 2 Cooperative Extension Postharvest Specialist; to whom reprint requests should be addressed. We thank Gold Coast Packing, Santa Maria, Calif., for providing the fresh cilantro and Gloria López-Gálvez and Trevor Suslow

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Tanya J. Hall, Roberto G. Lopez, Maria I. Marshall, and Jennifer H. Dennis

of planned Behaviour Poster presented at Intl. Assn. of Agr. Econ. Conference Gold Coast, Australia 12−18 Aug. 2006 5 Nov. 2009 < http://purl.umn.edu/25269 >. Huijsman, A. 1986 Choice and uncertainty in a semi

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Tanya J. Hall, Jennifer H. Dennis, Roberto G. Lopez, and Maria I. Marshall

investigation using the Theory of Planned Behaviour Poster presented at Intl. Assn of Agr. Econ. Conference Gold Coast, Australia 12–18 Aug. 2006 2 Mar. 2008 < http://purl.umn.edu/25269 >. Isik, M. 2004 Environmental regulation

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Qasim Ahmed, Yonglin Ren, Robert Emery, James Newman, and Manjree Agarwal

, P. 2007 The use of ethyl formate for space fumigation of dried vine fruit. Proc. Intl. Conf. Controlled Atmosphere Fumigation Stored Prod, Gold Coast, Australia, 8–13 Aug. 2007. p. 193–205 Van Epenhuijsen, C. Hedderley, D. Somerfield, K. Brash, D

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Jennifer Drew, Chengyan Yue, Neil O. Anderson, and Philip G. Pardey

. Agr. Econ. 18 3 403 414 Huang, C.L. Biing-Hwan, L. 2006 A hedonic analysis on the implicit values of fresh tomatoes. Paper presented at the International Association of Agricultural Economists Conference, Gold Coast, Australia Isaacson R.T. Allen K