Studies on breeding systems of some range grasses | ||
| تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران | ||
| Article 3, Volume 7, Issue 1 - Serial Number 7, March 2001, Pages 41-64 PDF (828.9 K) | ||
| DOI: 10.22092/ijrfpbgr.2001.115851 | ||
| Author | ||
| H. Maddah arefi* | ||
| Research lnstitute of Forest and Rangeland, P.O.Box. I 3 I 85- I 16, Tehran ,IRAN | ||
| Abstract | ||
| Variation in breeding systems of different plant species has been observed. Cross and self-pollination and apomixis are the main methods of seed production in plant species. In present research work, it has been tried to find out breeding systems of five grass species, namely Agropyron elongatum, A. pectinoforme, Festuca ovina, Secale montanum and Bromus percicus. Assays of flower organs in these species have shown that, situations for cleistogamy are suitable. Thus for determination of either cross-pollination or self-pollination, isolation in species were used. S. montanum, and B. persicus, in isolation and non-isolation, expressed the same seed production . So, they could be classified as cross pollinators, since they produced seed in isolated conditions. A. elongatum had shown to be self-pollinator with some percent of cross-pollinations. Pollen morphology testing is another method for determination of pollinatuon systems, which was used in this research, but because of Lack of access to suitable microscope, electron microscope, there was no acceptable differences between pollens of the plant species. | ||
| Keywords | ||
| C leistogamy; Outcrossing; Self-pollin ation; Breeding system; Apomixes; pollination; Agropyron elongatum. A. pectinoforme; Festuca Ovina; Secale montanum and Bromus percicus | ||
| References | ||
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