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Abstract

Seed Germination have important role in the life cycle of plants and decisive stages of the growth cycle, establishment and final yield. Seed germination is the most critical stage of seedling establishment which ultimately determines the successful production of the product. Salinity is one of the environmental factors reducing crop production in the world. Saline soils or irrigation with salt water has the potential to dramatically reduce plant production. To study the effect of different levels of salinity on the characteristics of soybean germination of 11 genotypes, a factorial experiment in a Completely Randomized Design with three replications in the greenhouse of Sari Agricultural Sciences and Natural Resources University was done in 2013. In this experiment the first factor salinity levels (zero, 3, 6 and 8 dS.m-1) and the second factor was genotype and eight different traits including germination percentage, germination rate, root length, root fresh weight, root dry weight, shoot length, shoot fresh weight and dry weight of shoot were evaluated. Analysis of vari­ance showed that the effect of salinity and genotypes in all studied traits was significant at the 1% probability level On the other hand, with increasing levels of salinity, all traits in all genotypes decreased. Also interaction of salinity and genotypes for all traits showed significant differences. In total, in the highest levels studied salinity, the highest rate and percentage of germination, root length and shoot and shoot and root dry weight in tolerant genotypes of Forrest, Hill, 032, Cokerstoart and BRAZIL17 and the lowest amounts in sensitive genotypes of Bau08, Mangar and 3 COH obtained.

     
Type of Study: Research | Subject: Special

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