پديد آورنده :
اديبي، محمدمهدي
عنوان :
كارايي اسپرمين، اسپرميدين و پوترسين بر شكستن خواب ريزغده‌هاي سيب‌زميني
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
علوم باغباني
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان
صفحه شمار :
يازده، 67ص.: مصور، جدول
استاد راهنما :
مصطفي مبلي، مهديه غلامي
استاد مشاور :
محمد رضا سبزعليان
توصيفگر ها :
اسپرمين , اسپرميدين , پوترسين , پلي آمين ها , جيبرليك اسيد , ميني تيوبر , شكستن خفتگي
استاد داور :
بهرام باني نسب، حميد رضا عشقي زاده
تاريخ ورود اطلاعات :
1398/03/11
رشته تحصيلي :
مهندسي كشاورزي
تاريخ ويرايش اطلاعات :
1398/03/12
چكيده انگليسي :
Efficiency of Spermine Spermidine and Putrescine on dormancy breaking of potato Solanum tuberosum L minitubers Mohamadmahdi Adibi Mohamadmahdi adibi@yahoo com 13 May 2019 Department of Horticultural science Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc language Farsi supervisor Mostafa Mobli mobli@cc iut ac ir supervisor Mahdiye Gholami mah gholami@cc iut ac irAbstractMinitubers are progeny tubers produced on in vitro plantlets after transplanting these plantlets in the greenhouse Inthis way Minituber is producing healthy plantlets by removing viruses however its dormancy period is longerthan normal seed tubers Minitubers dormancy period can be removing by physical and chemical methods Anumber of chemicals that are used to break dormancy are dangerous for human health and the environment While the breakage of dormancy by physical methods such as modified atmospheres requires expensive facilities and longperiods Plant growth regulations are producing naturally in plants and treating minitubers with these materials is asafe and confident method In Iran use of GA3 to break dormancy of potato minitubers is very common However the effect of GA3 on dormancy duration in seed tubers is cultivar dependent Polyamines are essential for thenormal growth and development of all cells and its can be effective for breaking dormancy in minitubers To testthis hypothesis a factorial experiment was conducted based on completely randomized design in four replicates Minitubers of three cultivars Marfona Santeh and Jelly treated with three types of polyamines includingspermine spermidine and putrescine in different concentrations 30 45 and 60 mg l and GA3 50 mg l anddistilled water as controls After dormancy breaking attributes like as days to sprouting length and diameter of thesprout weight loss and sprout number measured In all cultivars applying GA3 caused faster breakage ofdormancy but polyamines were no effective in breakage of dormancy than control Also results showed thatpolyamines treatments did not have a significant effect on the length and diameter of the dominant sproutscompared to the control but the longest length and thinnest diameter of the dominant buds were observed ingibberellic acid treatment as compared to other treatments Among polyamines spermine treatment significantlyincreased the number of sprouts compared than spermidine treatment Comparing polyamines with controls gibberellin treatment had a significant difference in most of characteristics with putrescine and sperminetreatments In polyamines treatments the lowest and highest apparent wilting is related to spermidine and putrescintreatment respectively Moreover in the controls treatment the highest apparent wilt was related to gibberellicacid treatment Comparing polyamines with controls results showed that the least wilt was achieved in spermidinetreatment and distilled water control Dormancy breakage correlated with higher weight loss and an increase in therate of respiration of tubers following sprout emergence Comparing between cultivars results indicated that Jellyhad the greatest length and diameter of buds and faster breakage of dormancy Keywords Spermine spermidine putrescine polyamines gibberellic acid minituber breakingdormancy 68
استاد راهنما :
مصطفي مبلي، مهديه غلامي
استاد مشاور :
محمد رضا سبزعليان
استاد داور :
بهرام باني نسب، حميد رضا عشقي زاده
