New Zealand Journal of Agricultural Research abstracts

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Interspecific hybridisation in Lolium evaluated by morphological genetic markers

Bilal Deniz

Department of Agronomy
Agricultural Faculty
Atatürk University
25240 Erzurum, Turkey
denizbilal@atauni.edu.tr
denizbilal@yahoo.co.uk

Unsal Dogru

Department of Animal Science
Agricultural Faculty
Atatürk University
25240 Erzurum, Turkey
udogru@atauni.edu.tr

Abstract   Interspecific hybridisation between tetraploid Lolium perenne L. (Lp) and L. multiflorum Lam. (Lm) was investigated by using morphological genetic markers. Fluorescent-root and awned-floret phenotypes are dominant in Italian ryegrass (L. multiflorum), so seed-parent Italian ryegrass plants were emasculated to eliminate the possibility of self-fertilisation. The percentages of germination were 84.3% in Lp × Lm and 90.6% in Lm × Lp crosses. The fluorescent seedlings were 81.8% in Lp × Lm and 83.7% in Lm × Lp crosses, and interspecific hybrids were 88.8 and 97.3%, respectively. The percentage of self-fertilisation was 4.0% in the perennial ryegrass. Pollen viability was 90.2% in the Lp × Lm and 91.0% in the reciprocal cross. The direction Lp × Lm seems to be a suitable method to produce interspecific hybrids on a mass scale.

Keywords   awned floret; fluorescent root; interspecific hybridisation; L. perenne; L. multiflorum

A06041; Online publication date 2 July 2007; Received 30 March 2006; accepted 21 March 2007

New Zealand Journal of Agricultural Research, 2007, Vol. 50: 279–284
0028–8233/07/5003–0279 © The Royal Society of New Zealand 2007

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