Hybrids of Hordeum californicum and 2x H. brevisubulatum s.l. with Agropyron caninum

Gupta, P. K. ; Fedak, George (1985) Hybrids of Hordeum californicum and 2x H. brevisubulatum s.l. with Agropyron caninum Canadian Journal of Genetics and Cytology, 27 (4). pp. 380-386. ISSN 0008-4093

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Official URL: http://www.nrcresearchpress.com/doi/abs/10.1139/g8...

Related URL: http://dx.doi.org/10.1139/g85-056

Abstract

Two diploid Hordeum species, H. californicum (2n=2x=14) and H. brevisubulatum s.l. (2n=2x=14), were used successfully to produce hybrids with Agropyron caninum (2n=4x=28) through embryo rescue techniques. The floral morphology of the hybrids was intermediate between the parents in each case. Both hybrids were triploids (2n=3x=21), and chromosome pairing exhibited a mean of 3.86 bivalents in the hybrid with H. californicum and a mean of 5.53 bivalents in the hybrid with H. brevisubulatum. Bivalent formation was attributed to a common genome between the diploid Hordeum species and the tetraploid A. caninum. It could not be ascertained whether the difference in the two hybrids was due to a difference in the degree of homology or difference in meiotic control mechanisms.

Item Type:Article
Source:Copyright of this article belongs to Genetics Society of Canada.
Keywords:Hordeum; Agropyron; Homeology; Triploid; Intergeneric Hybrid
ID Code:74938
Deposited On:19 Dec 2011 11:06
Last Modified:19 Dec 2011 11:06

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