News

a.z
Rahmani, E., A. Jafari, A., Hedaiati, P. (2004). Evaluation of seed and forage yield and yield components in Mountain Rye (Secal montanum Guss.) using correlation, regression and path analysis. , 12(2), 183-194. doi: 10.22092/ijrfpbgr.2004.115467
E. Rahmani; A. A. Jafari; P. Hedaiati. "Evaluation of seed and forage yield and yield components in Mountain Rye (Secal montanum Guss.) using correlation, regression and path analysis". , 12, 2, 2004, 183-194. doi: 10.22092/ijrfpbgr.2004.115467
Rahmani, E., A. Jafari, A., Hedaiati, P. (2004). 'Evaluation of seed and forage yield and yield components in Mountain Rye (Secal montanum Guss.) using correlation, regression and path analysis', , 12(2), pp. 183-194. doi: 10.22092/ijrfpbgr.2004.115467
Rahmani, E., A. Jafari, A., Hedaiati, P. Evaluation of seed and forage yield and yield components in Mountain Rye (Secal montanum Guss.) using correlation, regression and path analysis. , 2004; 12(2): 183-194. doi: 10.22092/ijrfpbgr.2004.115467

Evaluation of seed and forage yield and yield components in Mountain Rye (Secal montanum Guss.) using correlation, regression and path analysis

تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران
Article 5, Volume 12, Issue 2 - Serial Number 16, August 2005, Pages 183-194    PDF (671.78 K)
Document Type: Research Paper
DOI: 10.22092/ijrfpbgr.2004.115467
Authors
E. Rahmani; A. A. Jafari1; P. Hedaiati2
1Scientific Board of Research Institute of Forests and Rangelands, Tehran, Iran
2Postgraduate student of Islamic Azad University, Broujerd Branch.
Abstract
Mountain Rye (Secal montanum) is one of the important perennial forage grasses that grows in Iranian pasture and rangelands. In order to evaluate relationships between seed yield, forage dry matter yield and their components, 10 domestic ecotypes of this species were planted in Agriculture Research Station, Brojerd, Iran. These ecotypes were evaluated under optimum irrigation and dryland farming system using 2 separate complete blocks design with three replications in 2002. The data were collected and analyzed for flag leaf length, plant height, spike length, spike number per area, peduncle length, seed number per spike, thousand grain weight, seed yield, dry matter yield and harvest index in 2003.
The results showed significant relationships between seed yield and spike length (r=0.78) and seed yield with thousand grain weight (r=0.79). Forage yield had a positive and significant relationship with plant height, peduncle length, seed number per spike and thousand grain weight. Two separate stepwise regression analysis were used for seed yield and forage yield (as dependant variables). The results showed a significant effects of spike length, spike number and seed number per spike on seed yield production (R2=0.92). For forage dry matter yield, the following traits; plant height, seed number per spike, flag leaf length, harvest index and spike length, were included in regression equation model. The results derived from path analysis indicated that, spike length and spike number per area had significant effects on seed yield. For dry matter yield, plant height had the most direct and indirect effects through increasing spike length and harvest index on forage production.
Keywords
Secale montanum; Mountain rye; seed yield; forage yield; Correlation; Regression and path analysis
References

1- جعفری، ع. ا.، بشیرزاده، ع. و حیدری شریف‌آباد، ح.، 1382. بررسی عملکرد بذر و اجزاء آن در 29 رقم و اکوتیپ علف باغ (Dactylis glomerata). تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران شماره 11، صفحات 83-122. انتشارات مؤسسه تحقیقات جنگلها و مراتع، تهران.

2- صحت نیاکی، ن.، 1374. پوشش گیاهی علوفه ایران در هرباریوم کیو لندن. انتشارات دانشگاه شهید چمران، شماره 168، دانشگاه شهید چمران اهواز.، 666 صفحه.

3- Anaya, A. L. 1999. Allelopathy as a tool in the management of biotic resources in agroecosystems. Critical Rev. Plant Sci. 18: 697-739.

4- Berg, C.C. and R.R.Jr. Hill, 1989. Maturity effect on yield and quality of spring harvested orchardgrass forage. Crop Science29: 944.

5- Füle, L., Z. Galli, G. Kotvics and L. Heszky. 2004. Forage quality of ‘Perenne’, a new perennial rye variety (Secale cereale x Secale montanum) Genetic Variation for Plant Breeding, pp. 435-438 (2004) EUCARPIA, University of Natural Resources and Applied Life Sciences, Vienna, Austria.

6- Nguyen, H. T. and Sleper, D. A. 1983. Genetic variability of seed yield and reproductive characters in tall fescue. Crop Science 23: 621-626.

7- Oram, R.N. 1996. Secale montanum -a wider role in Australasia? New Zealand Journal of Agricultural Research 39: 629-633

8- Robert, A.B., Stephen B.M. and Abernethy R.H., 1988. Seeding competition between mountain rye, .Hycrest. crested wheatgrass, and downy brome. Journal of Range Management. 41: 30-34.

9- Wagoner, P. 1990. Perennial grain development: past efforts and potential for the future. Critical Rev. Plant Sci. 9: 381-408.

10- Pistorale, S. and Wolff, R.1998. Seed yield components in natural populations of Bromus catharticus Vahl. (cebadilla criolla). Journal-of-Genetics-and-Breeding 52:223-231.

Statistics
Article View: 469
PDF Download: 323


counter
Journal management system. designed by sinaweb