scholarly journals Fruit Texture Phenotypes of the RosBREED U.S. Apple Reference Germplasm Set

HortScience ◽  
2013 ◽  
Vol 48 (3) ◽  
pp. 296-303 ◽  
Author(s):  
Cari A. Schmitz ◽  
Matthew D. Clark ◽  
James J. Luby ◽  
James M. Bradeen ◽  
Yingzhu Guan ◽  
...  

Establishing marker-locus-trait associations to enable marker-assisted breeding depends on having an extensive, reliable database for phenotypic traits of interest in relevant germplasm. A reference germplasm set of 467 apple (Malus ×domestica Borkh.) cultivars, selections, and seedlings (referred to as individuals) was identified as part of the USDA-Specialty Crop Research Initiative (SCRI) project, RosBREED. The germplasm set provides efficient allelic representation of current parents in RosBREED demonstration apple breeding programs at Cornell University, Washington State University, and the University of Minnesota. Phenotyping at the three locations was conducted according to standardized protocols, focusing on fruit traits evaluated at harvest and after 10 and 20 weeks of refrigerated storage. Phenotypic data were collected for the sensory texture traits of firmness, crispness, and juiciness as well as for instrumental texture measures. In 2010 and 2011, fruit from 216 and 330 individuals, respectively, were harvested and a total of 369 individuals were evaluated over the two years. Correlations between sensory and instrumental texture measures were high in some instances. Moderate year-to-year repeatability of trait values was observed. Because each location had a largely unique set of individuals, as well as differing environmental conditions, means, ranges, and phenotypic variances differed greatly among locations for some traits. Loss of firmness and crispness during storage was more readily detected instrumentally than by the sensory evaluation.

HortScience ◽  
2019 ◽  
Vol 54 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Jonathan Magby ◽  
Gayle M. Volk ◽  
Adam Henk ◽  
Steve Miller

Thousands of apple trees were planted in Wyoming’s orchards and homesteads in the 1800s, many of which are still alive today. Unfortunately, cultivar identity of these trees has mostly been lost or obscured. The purpose of this research was to identify heritage apple cultivars in Wyoming using genetic fingerprinting (microsatellite) techniques and to use this information to make recommendations on candidate cold-hardy cultivars for specialty crop and breeding programs. Leaf samples were collected from 510 heritage apple trees from 91 sites in 19 locales across Wyoming. Known cultivars from the U.S. Department of Agriculture (USDA)–National Plant Germplasm System, Seed Savers Exchange, and Washington State University apple collections were used as standards to determine cultivar identities. Overall, 328 (64%) of the previously unidentified apples trees were identified to 47 known cultivars. Fifteen of these known cultivars comprised more than 80% of the samples that were identified, with all 15 of those cultivars developed in states and countries with average temperatures or winter conditions similar to Wyoming. Seventy-one of the heritage trees were identified as the Wealthy cultivar. Other commonly identified cultivars were Haralson, Patten’s Greening, Yellow Transparent, Northwestern Greening, and McMahon. It is likely that a combination of popularity and cultivar origin affected the choice of cultivars that were grown in Wyoming. Although most original Wyoming heritage apple trees are reaching the end of their life span, many surviving trees continue to produce fruit. This strongly suggests that despite lower resistance to certain pathogens than many modern cultivars, these heritage trees should be considered for use today. The results provide insights into possible cultivars that could be grown in Wyoming and also in other states with similar harsh growing conditions.


Author(s):  
L. S. Chumbley ◽  
M. Meyer ◽  
K. Fredrickson ◽  
F.C. Laabs

The development of a scanning electron microscope (SEM) suitable for instructional purposes has created a large number of outreach opportunities for the Materials Science and Engineering (MSE) Department at Iowa State University. Several collaborative efforts are presently underway with local schools and the Department of Curriculum and Instruction (C&I) at ISU to bring SEM technology into the classroom in a near live-time, interactive manner. The SEM laboratory is shown in Figure 1.Interactions between the laboratory and the classroom use inexpensive digital cameras and shareware called CU-SeeMe, Figure 2. Developed by Cornell University and available over the internet, CUSeeMe provides inexpensive video conferencing capabilities. The software allows video and audio signals from Quikcam™ cameras to be sent and received between computers. A reflector site has been established in the MSE department that allows eight different computers to be interconnected simultaneously. This arrangement allows us to demonstrate SEM principles in the classroom. An Apple Macintosh has been configured to allow the SEM image to be seen using CU-SeeMe.


1995 ◽  
Vol 30 (2) ◽  
pp. 289-321 ◽  
Author(s):  
Michael Jabara Carley

scholarly journals Making sense of archaeology - Cornelius Holtorf, illustrated by Quentin Drew. Archaeology is a brand!: the meaning of archaeology in contemporary popular culture. x+184 pages, numerous illustrations. 2007. Oxford: Archaeopress; 978-1-905739-06-6 paperback £14.99. - Nicholas J. Cooper (ed.). The Archaeology of the East Midlands: An Archaeological Resource Assessment and Research Agenda (Leicester Archaeology Monograph 13). xvi+378 pages, 72 b&w & colour illustrations, 8 tables. 2006. Leicester: University of Leicester; 0-9538914-7-X paperback £19.95. - John Hunter & Ian Ralston (ed.). Archaeological Resource Management in the UK: An Introduction. Second revised edition (first published 1993). xiv+402 pages, numerous illustrations. 2006. Stroud: Sutton; 978-0-7509-2789-5 hardback £25. - R.G. Matson & Timothy A. Kohler (ed.). Tracking Ancient Footsteps: William D. Lipe's Contribution to Southwestern Prehistory and Public Archaeology. xii+188 pages, 35 illustrations, 2 tables. 2006. Pullman (WA): Washington State University Press; 978-0-87422-290-6 paperback $22.95. - Jeffrey L. Hantman & Rachel Most (ed). Managing Archaeological Data: Essays in Honor of Sylvia W. Gaines (Arizona State University Anthropological Research Paper 57). x+202 pages, 37 illustrations, 42 tables. 2006. Tempe (AZ): Department of Anthropology, Arizona State University; 978-0-936249-18-6 paperback $33.50. - Michael D. Coe. Final report: An Archaeologist Excavates His Past. 224 pages, 6 figures, 35 plates. 2006. London: Thames & Hudson; 0-500-05143-7 hardback £18.95.

Antiquity ◽  
2007 ◽  
Vol 81 (312) ◽  
pp. 496-498
Author(s):  
Madeleine Hummler

PEDIATRICS ◽  
1966 ◽  
Vol 37 (1) ◽  
pp. 136-137

THE recipient of the Clifford G. Grulee Award of the American Academy of Pediatrics for 1965 is Clarence H. Webb of Shreveport, Louisiana. Born in Shreveport in 1902, Dr. Webb was graduated from Tulane University in 1923 and received his M.D. degree from the same university in 1925. Later—in 1931—he received the M.S. degree in pediatrics from the University of Chicago, where he completed a residency at the Bobs Roberts Hospital. Previously he had a year of residency at the University of Minnesota Hospital. Dr. Webb has been in the private practice of pediatrics in Shreveport since 1931. He has also been visiting lecturer at the Tulane School of Medicine since 1947 and professor of pediatrics in the Postgraduate School of the Louisiana State University School of Medicine since 1956. In addition, he finds time to lecture at the Northwestern College of Nursing in Natchitoches. He holds staff appointments at four private hospitals in the Shreveport area and is chief of pediatrics at Confederate Memorial Hospital. Dr. Webb is a member of a number of medical organizations and has served as president of the Louisiana and Shreveport Pediatric Societies, as well as president of the Shreveport Medical Society. He has been active in many local, state, and national organizations, including the Boy Scouts of America, the Louisiana Public Health Association, from which he received its annual award in 1957; the American Anthropological Association, and the Society for American Archeology. Dr. Webb served as president of the American Academy of Pediatrics in 1962-1963, previously serving as a member of the Executive Board and as chairman of District VIII. These services were outstanding and important.


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