Search Results

You are looking at 91 - 100 of 497 items for :

  • "tetraploid" x
Clear All
Free access

Guo-Gui Ning, Xue-Ping Shi, Hui-Rong Hu, Yan Yan and Man-Zhu Bao

and tetraploid lines in petunia and documented the relationship of ploidy with various phenotypic characters, but because the study was conducted with single-flowered lines only, this did not provide information regarding the double-flower trait

Open access

Kirk W. Pomper, Jeremiah D. Lowe, Sheri B. Crabtree, Jacob Vincent, Andrew Berry, Clifford England and Krit Raemakers

-flower) trees; however, some branchlets of staminate (male) flowers occur and can furnish pollen for fruit set ( McDaniel, 1973a , 1973b ). There are two races of American persimmon: a tetraploid (60-chromosome) race is centered in the southern Appalachian

Free access

Paul M. Lyrene

require continuous moisture in the top meter of soil. Several intersectional crosses have produced hybrids in Vaccinium ( Ballington, 1980 , 2001 ; Darrow and Camp, 1945 ; Rousi, 1963 ) but our attempts to cross diploid V. arboreum with tetraploid

Free access

Bruce L. Dunn and Jon T. Lindstrom

) or tetraploid (2 n = 76), although 16-ploid (2 n = 304) species have been reported ( Moore, 1960 ). Within the tetraploid species, B . davidii Franch. and its numerous cultivars are the most important economically, because they are commonly found

Full access

Jonathan D. Mahoney, Thao M. Hau, Bryan A. Connolly and Mark H. Brand

found as diploids (2 n = 2 x = 34) and tetraploids (2 n = 4 x = 68) with some occurrence of triploids ( Brand, 2010 ; Hovmalm et al., 2004 ; Leonard et al., 2013 ). Polyploidization events in Aronia likely resulted from the fusion of unreduced

Free access

Jude W. Grosser, Hyun Joo An, Milica Calovic, Dong H. Lee, Chunxian Chen, Monica Vasconcellos and Frederick G. Gmitter Jr

allotetraploid somatic hybrid plants from nine parental combinations. In addition, we report on regenerated autotetraploid plants from five of the parents. All of these tetraploids should have great value for subsequent use in our interploid breeding program to

Free access

Lihong Hao, Hui Ma, Jaime A. Teixeira da Silva and XiaoNan Yu

surface ornamentation. The pollen morphology of diploid, triploid, and tetraploid cultivars is shown in A–H, I–X and Y, and Z, respectively. Scale bars: 20 μm (A–Z), 10 μm (a), 5 μm (b–z). Table 2. The mean and standard deviation (n = 20) of six indices

Free access

Dominic A. Gillooly and Thomas G. Ranney

exception of K. polifolia that was tetraploid (2 n = 4 x = 48). However, that study only examined material from one or two plants per species to determine ploidy, and in the case of K. angustifolia , only samples from North Carolina were obtained as

Free access

David M. Czarnecki II and Zhanao Deng

selection) are being used to sterilize other ornamental plants for invasiveness control ( Ranney, 2004 ). Polyploids are common in L. camara . Triploids, tetraploids, pentaploids, and hexaploids have been reported in cultivated and naturalized L. camara

Full access

Jason D. Lattier, Hsuan Chen and Ryan N. Contreras

semidouble types ( Contreras and Lattier, 2014 ). The basic chromosome number of Hibiscus syriacus has been reported as x = 20, with most being tetraploid, 2 n = 4 x = 80 ( Skovsted, 1941 ). However, confusion persists as some reports claim H. syriacus