3313

3178

كارشناسي ارشد

﴿ اصلاح نباتات ﴾

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1384

يازده، [114]، [II] ص.: مصور، جدول، نمودار

ص. ع. به فارسي و انگليسي

احمد ارزاني

بهروز شيران ، نواز خرازيان

غلامرضا بلالي ، عبدالمجيد رضايي

1396/02/30

كتابنامه

كشاورزي

مهندسي كشاورزي

ID3178

به فا رسي و لاتين: قابل رؤيت در نسخه 0ديجيتالي

Abstract Wheat is the major source of energy protein and fibers in human nutrition and isthe most important crop in the world Wild relatives of cultivated wheats are potentialsources of valuable genetic materials for wheat improvement This study was conductedto assess genetic diversity of 31 wheat accessions belonging to Triticum and Aegilopsspecies using morphological traits and AFLP marker The used genotypes of Triticumspecies included four synthetic hexaploid wheat two bread and one durum wheatcultivars Wild species had two hexaploid five tetraploid and sixteen diploid accessions Twenty six morphological traits comprising awn color glum color grain color anthercolor leaf based color auricl color culm color tip leaf necrosis leaf waxiness hairyglum hairy flag leaf hairy node pubescence hairy peduncle hairy leaf hairy spikeneck hairy auricle hairy inter node days to jointing days to heading awn length glumlength plant height flag leaf length were used Fourteen primer combinations MseI PstI were used in AFLP procedure Considerable diversity was observed formorphological traits in wheat accessions Cluster analysis was performed with Dicecoefficient followed by UPGMA algorithm and revealed eight major groups Group 2had the highest number of accessions while groups 3 4 and 7 contained the leastnumber of accessions From view point of diversity within group second and fifthgroup each of which having three different species were the most diverse groups Similarity coefficients possessed a range of 0 18 to 1 and an average of 0 54 GreatestTwo accessions of T monococcum ssp boeoticum were the most related havingcoefficient of similarity of 1 and Ae cylindrical and T dicocoides species were the mostdistantly related In an average molecular experiment similarity coefficients possessed arange of 0 12 to 0 57 The highest genetic similarity 0 57 observed between twospecies of Ae crassa and the least one 0 11 was between Ae glabra and T monococcum that collected from Lorestan province Cluster analysis was performedusing Jaccard similarity coefficient followed by UPGMA algorithm and revealed twomajor groups First group included T monococcum T dicoccum and T dicoccoidesspecies that contained forty one percentage of total accessions Second group includedwhole of Aegilops accessions synthetic wheats and wheat cultivars Finally clusteranalysis was performed with combining AFLP marker and morphological traits dataapplying in same matrixand differentiated genotypes into two major groups First group included T monococcum T dicoccum and T dicoccoides species and the remainingaccessions located in the second group Furthermore cutting cluster in 0 32 coefficientof similarity region second group was divided into five sub groups The results of sub grouping was consistent with genomic level and formula the studied species Overall combined clustering described an efficient interpretation rather than two separate clusteranalysis of data It should be noticed that clustering with either of three methods ofphylogeny study Ae squarrosa T tauschii was more related to Aegilops species whileaccording to the estimated genetic distance it was distantly related with Triticumspecies

احمد ارزاني

بهروز شيران ، نواز خرازيان

غلامرضا بلالي ، عبدالمجيد رضايي