Comparing 26 orchard grass (Dactylis glumerata) genotypes in Zanjan province for synthetic variety production

Document Type : Research Paper

Authors

1 Agricultural and Research Center of Zanjan. Iran

2 Research Institue of Forest and Rangelands, P.O. Box: 13185-116, Tehran, Iran.

Abstract

Cocksfoot (Dactylis glumerata) is a perennial grass that being used for pastures and hay production. In order to evaluation of quantity and quality variation of 36 genotypes of Dactylis glumerata, an experiment was carried out using an unbalanced RCBD in Agricultural and Natural Resources Research Center of Zanjan. Forage yield, plant height, heading date, leaf to stem ratio, digestibility, protein, soluble carbohydrates, crude fibre, ADF,NDF and ash content were evaluated. After calculating correlation coefficients between traits, related traits to yield and quality were determined. Genotypes showed significant differences for all traits, except for crud fiber, ash and ADF. To determine the best varieties and populations, trait means were compared: Genotypes 21, 32, 19-33, and 28 had the highest yield. Based on heading date comparisons, genotypes 3-25 and 32-36 were located in very early maturity class and genotypes 1, 2, 6, 17, 21, 27, 28 and 30 were located in very late maturity. Considering digestibility, genotype 21 was the most digestible with 67.19 percent. For protein content, genotypes were divided into 4 groups among which genotype 21 with 22.68% had the highest protein content. In general, it is possible can plant genotypes 1, 3, 8, 10 together with 17, 21, 24, 32 and 36 in order to achieve synthetic seeds through open pollination.

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References

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Iranian Journal of Rangelands and Forests Plant Breeding and Genetic Research
Volume 14, Issue 3 - Serial Number 25
November 2006
Pages 175-180

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