12999

1089 دكتري

دكتري

اصلاح نباتات

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

۱۳۹۶

ده، [۲۴۱]ص.: مصور، جدول، عكس(رنگي)، نمودار

احمد ارزاني، قدرت ا... سعيدي

پرويز احسان زاده، فرشاد حبيبي

مهدي رحيم ملك، مجيد طالبي، مريم گل آبادي

1396/08/21

كتابنامه

كشاورزي

مهندسي كشاورزي

ID1089 دكتري

233 Evaluation of genetic diversity and salinity tolerance in some Iranian genotypes of Bromus danthoniae Masoumeh Rezaei masoumeh rezaei@ag iut ac ir September 12 2017 Department of Agronomy and Plant Breeding Isfahan University of Technology Isfahan 84156 83111 Iran 1st Supervisor Ahmad Arzani a arani@cc iut ac ir 2nd Supervisor Ghodratollah Saeidi gsaeidi@cc iut ac ir 1st Advisor Parviz Ehsanzadeh ehsanp@cc iut ac ir 2nd Advisor Farshad Habibi f h1356@gmail comCollege Graduate Program Coordinator Mehran Shirvani Professor Department of Agronomy and Plant Breeding College of Agriculture Isfahan University ofTechnology Isfahan Iran Associate Professor Department of Agronomy and Plant Breeding College of Agriculture IsfahanUniversity of Technology Isfahan Iran Associate Professor Department of Plant Physiology College of Agriculture Islamic Azad University Miandoab Branch Miandoab Iran AbstractIn this study 82 Bromus danthoniae genotypes originated from West non saline andNorthwest saline Iran were investigated in four experiments Genetic variation of 82genotypes was evaluated using morphological traits Cytogenetic variation of 14 genotypeswas assessed in the second experiment According to our results the mitotic chromosome sizeof this species was medium to large and all of the karyotypes possessed one two two pairofsatellited chromosomes In the third experiment salinity tolerance of 80 genotypes wasevaluated under control and 350 mM NaCl conditions using physiological traits Resultsshowed a significant genotypic G variation for all traits as well as significant salinity stress S and G S effects for most of the traits In addition a coincidence of low concentrationsof Na in the leaf tissues and the excretion of salt crystals on the sheath leaves leaf bladeswas observed in the hyper salinity tolerant genotypes Eight important salinity tolerancegenes NHX1 NHX3 SOS1 HKT1 5 AKT1 SAT32 SnRK2 3 and DREB2 werecharacterized by sequencing in the fourth experiment The results indicated that the partialsequences of coding regions of these genes were same in both salt tolerant and salt sensitivegenotypes The phylogenic trees for the studied genes showed that B danthoniae wasincluded in a common group with other grass species and possessed the highest similaritieswith Triticum spp Aegilopes spp and Hordeum vulgare Key words Salt stress Bromus danthoniae salt excretion salt tolerant genesIntroductionBromus danthoniae Trin is a rangeland grass species Poaceae Pooideae and harborsimportant genetic resources for abiotic stresses This mainly Irano Turanian species is highly

احمد ارزاني، قدرت ا... سعيدي

پرويز احسان زاده، فرشاد حبيبي

مهدي رحيم ملك، مجيد طالبي، مريم گل آبادي