ﺑﺮ ﺗﺤﻤﻞ Micrococcusyunnanensisو ﺑﺎﮐﺘﺮي Rhizophagus intraradices ﺗﺎﺛﯿﺮ ﻗﺎرچ ﮐﻨﺠﺪ ﺑﻪ ﺳﻤﯿﺖ ﺑﻮر

Effect of Rhizophagus intraradices and Micrococcus yunnanensis on the Tolerance of Sesamum indicumto Boron Toxicity

ﺳﻤﯿﺖ ﺑﻮر ﯾﮑﯽ از ﻣﺸﮑﻼﺗﯽ اﺳﺖ ﮐﻪ رﺷﺪ ﮔﯿﺎﻫﺎن را در ﺧﺎك ﻫﺎي ﻣﻨﺎﻃﻖ ﺧﺸﮏ و ﻧﯿﻤﻪ ﺧﺸﮏ ﺟﻬﺎن ﻣﺤﺪود ﻣﯽ ﮐﻨﺪ. ﭘﮋوﻫﺶ ﺣﺎﺿﺮ ﺑﺎ ﻫﺪف ﺑﺮرﺳﯽ اﺛﺮ ﻗﺎرچ و ﺑﺎﮐﺘﺮي و ﻣﺎﯾﻪ زﻧﯽ دوﺗﺎﯾﯽ آﻧﻬﺎ ﺑﺮ ﻣﻘﺎوﻣﺖ ﮐﻨﺠﺪ ﺑﻪ ﺳﻤﯿﺖ ﺑﻮر اﻧﺠﺎم ﮔﺮدﯾﺪ. آزﻣﺎﯾﺶ ﺑﻪ ﺻﻮرت ﻓﺎﮐﺘﻮرﯾﻞ در ﻗﺎﻟﺐ ﻃﺮح ﮐﺎﻣﻼ ﺗﺼﺎدﻓﯽ و ﺑﺎ ﺳﻪ ﺗﮑﺮار در ﮔﻠﺨﺎﻧﻪ داﻧﺸﮑﺪه ﮐﺸﺎورزي داﻧﺸﮕﺎه ﺷﯿﺮاز اﻧﺠﺎم ﺷﺪ ﮐﻪ ﺷﺎﻣﻞ ﭘﻨﺞ ﺳﻄﺢ ﺑﻮر )0، 1/5، 3، 6، 12 ﻣﯿﻠﯽ ﮔﺮم در ﮐﯿﻠﻮﮔﺮم ﺧﺎك( از ﻣﻨﺒﻊ اﺳﯿﺪﺑﻮرﯾﮏ و ﭼﻬﺎرﺳﻄﺢ ﻣﯿﮑﺮوﺑﯽ )ﺑﺪون ﻣﺎﯾﻪ زﻧﯽ، ﻗﺎرچRhizophagus intraradices ﺑﺎﮐﺘﺮيMicrococcus y unnane n،sisو ﻣﺎﯾﻪ زﻧﯽ دوﺗﺎﯾﯽ ﻗﺎرچ و ﺑﺎﮐﺘﺮي( و ﺑﺬر ﮐﻨﺠﺪ از رﻗﻢ داراب ﺑﻮد. ﻧﺘﺎﯾﺞ ﻧ2ﺸﺎن داد ﮐﻪ ﻣﺎﯾﻪ زﻧﯽ ﻗﺎرچ و ﻣﺎﯾﻪ زﻧﯽ دوﺗﺎﯾﯽ در ﺳﻄﺢ اﺣﺘﻤﺎل درﺻﺪ ﺗﺎﺛﯿﺮ 5ﻣﻌ ﻨﺎ داري ﺑﺮ ارﺗﻔﺎع، وزن ﺗﺮ و ﺧﺸﮏ اﻧﺪام ﻫﻮاﯾﯽ و ﺗﻌﺪاد ﮐﭙﺴﻮل ﮐﻨﺠﺪ داﺷﺖ. ﺑﻄﻮرﮐﻠﯽ ﻧﺘﺎﯾﺞ ﻧﺸﺎن دادﮐﻪ ﻣﯽ ﺗﻮان ﺑﺎ ﻣﺎﯾﻪ زﻧﯽ ﻗﺎرچ رﯾﺸﻪ و ﺑﺎﮐﺘﺮي ﻣﺤﺮك رﺷﺪ رﺷﺪ ﮔﯿﺎ،ه در ﺷﺮاﯾﻂ ﺳﻤﯿﺖ ﺑﻮر راﺑﻬﺒﻮد داد.

Boron (B) toxicity is one of the problems limiting plant growth in arid and semiarid soils of the world. The aim of this study was to investigate the effect of fungi and bacteria and their co-inoculation on Sesamum indicum resistance to B toxicity. The experiment was carried out as a factorial experiment in a completely randomized design with three replications in the greenhouse of College of Agriculture Shiraz University, which included five boron levels (0, 1.5, 3, 6, 12 mgkg-1 soil) of boric acid source and four microbial levels (non-inoculation, Rhizophagus intraradices fungus, Micrococcus yunnanensis bacterium and their co-inoculation).Cultivar of sesame seeds in this study was Darab 2. Results showed that fungal inoculation and their co-inoculation at 5% level had significant effect on height, fresh and dry weights of shoot and sesame capsule. Therefore, inoculation of root fungi and growth promoting bacteria can be used to improve plant growth under B toxic conditions.