Investigation and comparison of bioethanol production potential From biomass and Structural and non-structural carbohydrate reserves of speciesSuaeda vermiculata, Halocnemum strobilaceum and Seidlitzia rosmarinus

The present study was aimed to determine the potential of bioethanol production in three halophytes: Suaeda</em> vermiculata</em>, Halocnemum</em> strobilaceum</em> and Seidlitzia</em> rosmarinus</em>. The plant sampling was performed in three vegetative, flowering and seeding stages to measure the content of  cellulose, hemicellulose and lignin. Their biomass production was calculated at the end of annual growth. The results were analyzed in a randomized complete block design with three replications. The results showed that the content of lignin in the Ha.strobilaceum</em> was more than cellulose and hemicellulose at seedling stage; therefore, it does not have the potential to produce ethanol. However, in the vegetative and flowering stages, the amount of hemicellulose increased, indicating a little potential for ethanol production.In Se.rosmarinus</em>, due to an increase in cellulose and hemicellulose percentage compared to lignin, it has high potential for bioethanol production; however, its biomass production is less than the other two. In Su.vermiculata</em>, the percentage of cellulose and hemicellulose is higher than lignin percentage, so it has the greatest potential for bioethanol production. The best harvesting time for bio-ethanol extraction is before flowering stage. Its biomass production is higher than the two other species (1174 kg / h); thus, following some basic principles of agriculture, it could be established on a large scale for massive production. Therefore, Su.vermiculata</em> is a suitable species for bioethanol extraction in saline and low-yielding lands. Due to its presence on the margins of farms and rangelands of arid and saline areas such as southern Garmsar and south of Varamin, it is recommended to be introduced to farmers and experts in the field of agriculture and natural resources.