Search Results

You are looking at 1 - 9 of 9 items for :

Clear All
Free access

S. De Schepper, L. Leus, M. Mertens, E. Van Bockstaele, M. De Loose, P. Debergh and J. Heursel

Ploidy level was determined for six species and 88 cultivars of the Rhododendron subgenus Tsutsusi. High-resolution flow cytometry of nuclear DNA was performed on macerated plant tissue. All plants analyzed were diploid (2n = 26) with the exception of `Euratom', `Euratom Orange', and `Red Wing', which were triploid (3n = 39), and `Casablanca Tetra', which was found to be a cytochimera: mixoploid (2n + 4n) in the LI and LII, but tetraploid in the LIII. The described method has proven to be useful in screening a large population of rhododendrons. Analysis of different organs and plant tissues was easily accomplished through flow cytometry, and has proven useful in determining the ploidy of different histogenic layers.

Restricted access

Bing Liu, Hong Zhou, Sha Cao, Yi-ping Xia and Rajeev Arora

Tsutsusi ( Chamberlain and Rae, 1990 ) and, in China, are distributed mainly in the south of the Yangtze River. These woody ornamentals cease visible growth during winter ( Wilkinson and Richards, 1991 ) and bloom in late March to early April as the spring

Free access

David Kopsell

, Tsutsusi , Candidastrum , Mumeazalea , Therorhodion , and Rhododendron ; Vireya is not included) beginning with the elepidote (non-scaly) rhododendrons first, followed by the lepidote (scaly and usually evergreen) rhododendrons. The guide does not

Free access

Xue-qin Wang, Yuan Huang and Chun-lin Long

sections of the genus Rhododendron ( Fang et al., 2005 ): R. irroratum Franch. (Sect. Ponticum G. Don), R. molle (Blume) G. Don (Sect. Pentanthera G. Don), R. simsii Planchon (Sect. Tsutsusi Sweet), R. pachypodum I. B. Balfour & W. W. Smith

Free access

Dominic A. Gillooly and Thomas G. Ranney

Arnold, M.L. 2006 Evolution through genetic exchange Oxford Univ Press, Oxford De Schepper, S. Leus, L. Mertens, M. Van Bockstaele, E. De Loose, M. 2001 Flow cytometric analysis of ploidy in Rhododendron (subgenus Tsutsusi ) HortScience 36 125 127

Free access

Cary J. Hebert, Darren H. Touchell, Thomas G. Ranney and Anthony V. LeBude

, or Tsutsusi and represent various sections and subsections with only R. mucronulatum and the R . P.J.M. Group representing subgenus Rhododendron (subsections Rhodorastra and Caroliniana ) (American Rhododendron Society, 2009). The parents of

Free access

Ryan N. Contreras, Thomas G. Ranney and Shyamalrau P. Tallury

. 2001 Flow cytometric analysis of ploidy in Rhododendron (subgenus Tsutsusi ) HortScience 36 125 127 Doležel, J. Greilhubers, J. Lucretti, S. Meister, A. Lysak, M.A. Nardi, L

Free access

Michael C. Long, Stephen L. Krebs and Stan C. Hokanson

reported on evergreen azaleas (subgenus Tsutsusi) ( Galle, 1987 ; Holcomb and Ferrin, 2006 ). The incidence of PM disease appears to have increased in recent years, possibly as a result of an expansion in host range. Although deciduous azaleas have long

Free access

Richard T. Olsen

Asiatic origin are ubiquitous components of American gardens, from the signature plantings of evergreen azaleas ( Rhododendron subgenus Tsutsusi ) in the South to the cold-hardy deciduous Korean rhododendrons ( Rhododendron mucronulatum ) in the North