Effects of different climatic Sinorhizobium meliloti sp. on N fixation and forage yield of 3 alfalfa (Medicago sativa L.) cultivars

Document Type : Research Paper

Author

- Research Institute of Forests and Rangelands, P.O. Box: 13185-116, Tehran, Iran

Abstract

Biological nitrogen fixation (BNF) through symbiosis is beneficial for increase of yield, reduction of production expenses, increment of soil fertility, prevention of under ground water pollution. In order to study the effects of different Sinorhizobiummelliloti strains on growth, and yield components of some alfalfa varieties (Medicago sativa L.) an experiment was conducted in greenhouse condition in Research Institute of Forests and Rangelands, Tehran, Iran. A factorial experiment was used on the basis of completely randomized design with 3 replications, Analyzing 3 varieties of alfalfa (Maraghehi, Hamadani and Yazdi) and 4 sinorhizobium melliloti strains (Yazd, Bosher, Rasht and Sanandaj). Varieties showed significant differences for nodule and stem numbers. Sinnorhizobium melliloti strains had significant effects on all studied attributes. Also, interaction of variety and Sinorhizobium melliloti strains significantly affected root length and number of stem nodules number.

Keywords


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