پديد آورنده :
نوري زاده، حامد
عنوان :
ارزيابي صفات زراعي و مورفولوژيك متاثر از تنش رطوبتي در لاين هاي اينبرد نوتركيب گندم
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
اصلاح نباتات
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
چهارده،75ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
محمدحسين اهتمام، محسن اسماعيل زاده مقدم
استاد مشاور :
احمد ارزاني
توصيفگر ها :
اجزاء عملكرد , تنش خشكي , عملكرد دانه , شاخص تحمل به خشكي
تاريخ نمايه سازي :
2/7/92
استاد داور :
مهدي رحيم ملك، بهروز مصطفي زاده فرد
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Evaluation of Agronomic and Morphological Traits Affected by Moistur Stress in Recombinant Inbred Lines of Wheat Hamed Nourizadeh h nourizadeh@ymail com Date of Submission January 13 2013 Department of Agronomic and Plant Breeding Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Mohammad Hosein Ehtemam hehtemam@cc iut ac ir Mohsen Esmaeilzadeh Moghadam esmaeilzadehmoghadam@ymail com Abstract Drought stress as the most important abiotic stress plays an important role in the yield reduction of crop plants worldwide For improvement of complex traits such as yield possessing low heritability indirect selection is applied using other traits viz morph physiological traits This study was conducted to evaluate the effect of water stress on the agronomic and morphological traits of 169 recombinant inbred lines RILs in wheat Triticum aestivum L using two separate lattice design drought and control at Research Farm of Isfahan University of Technology in 2011 2012 Two moisture regimes of 70 and 130 mm evaporation from evaporation pan class A 16 and 20 moisture by weight of soil respectively were used Drought stress reduced the days to heading days to pollination days to maturity spike length plant height number of spike m2 number of grains per spike grain weight in the spike 1000 grain weight biological yield grain yield and harvest index Results of analysis of variance revealed significant differences among lines for all studied traits under normal conditions with the exception of number of grains per spike grain weight in the spike spike length days to pollination and days to maturity Under moisture stress conditions the RILs significantly differed for the studied traits with the exception of number of grains per spike 1000 grain weight and spike length The correlation coefficients in the normal conditions showed that all traits had a positively correlated with grain yield with the exception of spike length and days to pollination Under the moisture stress condition the seed yield is affected by all traits positively The results of the factor analysis in both normal and stress moisture conditions showed that the measured traits have appeared either in a hidden factors which explained 67 09 and 84 26 of the total variation of data respectively Using three dimensional profiles lines 4 27 and 40 as the superior genotypes were introduced in terms of three factors Based on the Fernandez s drought tolerance index lines 1 and 69 were identified as the most tolerant and the most sensitive ones respectively The results of stepwise regression on the grain yield under normal and moisture stress conditions revealed that the number of spikes m2 and the grain weight in spike contributed 95 of the seed yield variations in both environmental conditions According to the results it can be concluded that the number of spikes m2 and the grain weight in spike have been the two most important components of gain yield under both normal and drought stress conditions Moreover the superior drought tolerance lines have the potential to improve the grain yield in both environmental conditions in a breeding program Key words Recombinant Inbred Lines Yield components Drought stress Grain yield Drought tolerance index PDF created with pdfFactory trial version www pdffactory com
استاد راهنما :
محمدحسين اهتمام، محسن اسماعيل زاده مقدم
استاد مشاور :
احمد ارزاني
استاد داور :
مهدي رحيم ملك، بهروز مصطفي زاده فرد
