پديد آورنده :
محمدي ميريك، علي اكبر
عنوان :
مطالعه ژنتيكي برخي صفات زراعي - مرفولوژيك و محتواي روغن در برزك﴿.Linum usitatissimum L﴾
گرايش تحصيلي :
اصلاح نباتات-ژنتيك بيومتري
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
پانزده،165ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
قدرت الله سعيدي، احمد ارزاني
استاد مشاور :
عبدالمجيد رضايي
توصيفگر ها :
داي آلل , تركيب پذيري عمومي و هتروزيس
تاريخ نمايه سازي :
27/9/89
استاد داور :
آقا فخر مير لوحي، حسن پاك نيت جهرمي، سعدالله هوشمند
كد ايرانداك :
ID340 دكتري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Genetic analysis of some agro morphological traits in flax Linum usitatissimum L Ali Akbar Mohammadi Mirik E mail address aa mohammadi@ag iut ac ir Date of Submission October 13 2010 Department of Agronomy and Plant Breeding Faculty of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Degree PhD Language Farsi 1st Supervisor s Name G Saeidi gsaeidi@cc iut ac ir 2nd Supervisor s Name A Arzani a arzani@cc iut ac ir 1st Advisor s Name A Rezai Department Graduate Program Coordinator Farshid Noorbakhsh Department of Agronomy and Plant Breeding Faculty of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Abstract In order to estimate the genetic parameters for different agro morphological traits in flax a complete diallel cross was conducted by using eight flax genotypes including four Iranian breeding lines and four Canadian genotypes Analysis of variances showed highly significant differences among the genotypes Significant general combining ability GCA specific combining ability SCA and reciprocal effects revealed meaningful contributions of both additive non additive type of gene actions and also the maternal influence in genetic control of the traits The results showed that additive gene actions had greater effects on the inheritance of days to flowering days to maturity plant height primary branches per plant 1000 seed weight seed oil content linoleic acid and stearic acid in the oil However number of capsules per plant number of seeds per capsule palmetic acid and oleic acid content in the oil and LDP ODP indexes were largely controlled by dominance genetic effects Both additive and non additive gene actions were important in genetic control of harvest index seed yield per plant seed and oil yield Base on the values of GCA the best parental combiners were McGregor for plant height KO37 for 1000 seed weight early flowering and maturity KH124 and KO37 for number of seeds per capsule seed oil content seed yield per plant and seed yield AH92 for branches per plant and ODP indexes SE65 for number of capsules per plant A considerable heterosis was observed for the studied traits in some cross combinations and the highest heterobeltiosis values of 64 1 35 1 21 6 77 2 and 91 3 were obtained for number of capsules per plant number of seeds per capsule 1000 seed weight seed yield per plant and seed yield respectively The results of generation mean analysis for two crosses also indicated that plant height branch per plant and 100 seed weight number of seeds per capsules and seed yield per plant were controlled by both additive and dominance genetic effects whereas non allelic gene actions showed considerable effects on number of capsules per plant These results imply the potential of producing superior cultivars through selection in segregating populations or using the hybrid cultivar advantages providing that the technical problems hampering economical production of hybrid seeds in flax could be overcame Key words Diallel Cross Flax Combining Ability Heterosis
استاد راهنما :
قدرت الله سعيدي، احمد ارزاني
استاد مشاور :
عبدالمجيد رضايي
استاد داور :
آقا فخر مير لوحي، حسن پاك نيت جهرمي، سعدالله هوشمند
