4997

4701

كارشناسي ارشد

اصلاح نباتات

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1388

يازده ،68ص: جدول

ص.ع. به: فارسي و انگليسي

محمد مهدي مجيدي، آقا فخر ميرلوحي

احمد ارزاني

11/11/88

محمد رضا سبزعليان، مجيد طالبي

مهندسي كشاورزي

ID4701

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

Genetic Evaluation of Sainfoin Progenies Derived from Populations with Natural and Induced Variability Marzie Baghaie nia m baghaienia@ag iut ac ir Date of Submission 28 10 2009 Department of Agronomy and Plant Breeding Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiSupervisors s name and Email address Mohammad Mahdi Majidi Majidi@cc iut ac ir AbstractThis research was conducted to evaluate the genetic diversity of Sainfoin onobrychis viciifolia Scop half sib progenies derived from two populations with natural and induced variability Also it wasaimed to provide better understanding of factors affecting interrelation between the characters andidentify the best combiner parents from both mutated and non mutated populations Considerablevariation was observed in the two populations for fresh and dry forage yield dry matter percentage persistency and powdery mildew susceptibility Except for dry matter percentage in the second year phenotypic and within population coefficients of variability didn t show significant differencesbetween the two populations during two years Results showed that there were significant differencesbetween mutant and non mutant families for number of stem per m2 plant height leaf to stem ratio dry matter percentage and spring growth Mutant families were superior for leaf stem ratio while non mutant families were better for other characters Family by year interaction was significant for allcharacters except plant height Result showed that general combing ability GCA was significantlydifferent between mutant and non mutant populations for most of the traits Ward cluster analysisbased on general combining ability grouped mutant and non mutant families separately in four clusters Based on important traits a number of mutant 8 9 10 11 12 13 18 36 39 and 40 and non mutantgenotypes 1 3 5 6 7 and 9 were selected as the best parents for developing synthetic variety Mutation changed relationships between some of characters For example correlation of dry forageyield with number of inflorescence was negative in non mutatnt and positive in mutant families Correlation of leaf percentage with number of stem per plant was positive in mutant but negative innon mutatnt families Factor analysis showed that mutant families with fewer factors explained greatervariance than non mutant families Results of cluster analysis confirmed the high genetic variability ineach population A group of genotypes clustered together in mutant population stayed roset and did notgrow in the first year indicating a possible induction of vernalization requirement in these genotypes Inconclusion the results indicated that there was a broad genetic diversity in mutant and non mutatntpopulations which can be exploited in future breeding programs Key Words General combining ability Mutation Variation Sainfoin Phenotypiccorrelation

محمد مهدي مجيدي، آقا فخر ميرلوحي

احمد ارزاني

محمد رضا سبزعليان، مجيد طالبي