عنوان

ارزیابی صفات و شاخصهای فیزیولوژیک عدس تحت تنش خشکی

شماره

‭۱۵۰پ‬

زبان متن نوشتاري يا گفتاري و مانند آن

per

عنوان اصلي

ارزیابی صفات و شاخصهای فیزیولوژیک عدس تحت تنش خشکی

نام نخستين پديدآور

/علی حاتمی

نام ناشر، پخش کننده و غيره

تبریز: دانشگاه تبریز

نام خاص و کميت اثر

‮‭۱۶۲‬ ص، جدول، نمودار، عکس، لوح فشرده‬

متن يادداشت

چاپی

متن يادداشت

واژه نامه

متن يادداشت

کتابنامه ص.: ‮‭۱۶۴-۱۸۷‬

جزئيات پايان نامه و نوع درجه آن

دکتری

نظم درجات

مهندسی کشاورزی-زراعت

زمان اعطا مدرک

‮‭۱۳۸۲/۰۶/۱۸‬

کسي که مدرک را اعطا کرده

تبریز: دانشگاه تبریز

متن يادداشت

در میان حبوبات رایج در ایران، عدس بعد از نخود مهمترین محصول مورد کشت در مناطق دیمزارها می‌باشد .بویژه ظهور دوره گلدهی عدس بعنوان بحرانی‌ترین مرحله نیاز آبی مصادف با تقریبا عدم نزولات جوی و نیز خشکی می‌گردد .بنابراین با توجه به محدودیت آب در این مناطق در صورت امکان آبیاری تکمیلی می‌تواند در این مرحله از رشد و نمو باعث افزایش عملکرد در عدس گردد .بر همین اساس، این پژوهش برای ارزیابی صفات و شاخص های فیزیولوژیک عدس در سطوح مختلف آبیاری در دو محیط گلخانه‌ای و مزرعه‌ای در سال ‮‭۱۳۸۰‬ در ایستگاه تحقیقاتی پژوهشی دانشکده کشاورزی دانشگاه تبریز واقع در خلعت پوشان انجام گرفت.در این آزمایش‌ها چهار رقم عدس شامل زیبا و) ‮‭ILL۶۲۰۶‬ از گروه میکروسپرما (و نیز رقم بومی ورزقان و) ‮‭ILL ۴۴۰۰‬ از گروه ماکروسپرما (با چهار سطح آبیاری تکمیلی ‮‭۱۰۰‬ ، ‮‭۷۵‬ ، ‮‭۵۰‬ و ‮‭۲۵‬ آب قابل استفاده بروش گراویتمری در مرحله گلدهی اعمال گردید .آزمایشات بصورت فاکتوریل و بر پایة طرح بلوک های کامل تصادفی با ‮‭۴‬ تکرار در مزرعه که هر کرت آن ‮‭۵/۱‬ متر عرض و ‮‭۸‬ متر طول که شامل ‮‭۵‬ ردیف بفاصله ‮‭cm۳۰‬ و فاصله دو بوته ‮‭cm۴‬ در نظر گرفته شد .و در گلخانه سه تکرار و هر کرت شامل ‮‭۲۰‬ گلدان بود

متن يادداشت

Between of pulses, lentil is important crop after chickpea at rainfed farming system in Iran. The flowering stage is critical irrigation period at this plant. This stage crosses with heavy limitation of water. Therefore, supplemental irrigation will be increase grain yield at this stage. On this base, present research implemented about "Assessment of physiological indexes and characteristics in Lentil (Lens culinaris Medik) under drought stress". Two experiments were including of greenhouse and field. Local of experiments was at station of agriculture researches in Tabriz University, faculty of agriculture at 1380. In both experiments, four lentil cultivars including Varzaghan and ILL4400 of Macrosperma type; Ziba and ILL6206 of Microsperma Type. Cultivars studied at 25 , 50 , 75 and 100 available water (AW). Levels of AW applied on the start of flowering stage and then stopped in the entries reproductive period. The soil moisture content was determined by the gravimetric method. The experiments were based on Randomized Complete Block Design with three and four replications at greenhouse and field respectively. At greenhouse experiment, a plot was consisted 20 pots, but at field experiment a plot was consisted of five rows spaced 30 cm apart and 8m long.Samples were picked up each 5 days for determination of growth indexes, relative of water content (RWC), quality and quantity of seed, percent and rate of seed protein content during the vegetative growth and seed filling periods. The results of filed showed that dry matter (DM) and leaf area index (LAI) were maximum at about 540-640 GDD after implant but relative growth rate (RGR), crop growth rate (CGR) and net assimilation rate (NAR) were Zero nearly. During of growth period, Ziba cultivar had maximum DM and LAI.In both experiments, period of pod, seed filling and growth reduced by increasing of water limitation. In microsperma cultivars, period of growth and seed filling were lower than microsperma cultivars. The period of seed filling with period of pod and growth showed positive correlation and significant. In greenhouse experiment, the number of leaves and surface of pods affected by water limitation but number of leaflets, DM and DM of root non-affected. In macrosperma cultivars the mean of pod surface and pod weight were more than microsperma cultivars. In field experiment, the number of leaves and DM reduced by increasing of water limitation.At 100 and 25 AW, the number of leaves were 49.9 and 36.13 respectively .At 25 AW, DM reduced at about 21.4 lower than 100 AW. In both experiments the role of RWC showed that it was height at 100 AW but low at 25 AW.In general, amount of RWC was height in microsperma types at seed filling period. LAI reduced at seed filling period but it was height at 100 and 75 AW than 25 AW. In both experiments, number of sear flowers and hollow pods increased but number of pods per plant, seed per pod, seed pre plant, 100- seed weight, grain yield and harvest index (HI) were reduced by increasing of water limitation.In greenhouse experiment, grain yield was reduced about 14.1 , 37.9 and 46.9 at 75 , 50 and 25 AW, respectively. HI reduced about 60 at 25 AW. ILL4400 cultivar showed least number of sear flowers and height grain yield but Ziba cultivar showed height pods number and seeds number per pod. In macrosperma cultivars, HI was height about 60 -69.5 then microsperma cultivars. In the field experiment, grain yield was about 50.4g.m2 at 100 AW and it was reduced about 17.6 , 23.2 , 34.4 at 75 , 50 and 25 AW respectively. In both experiments, ILL4400 cultivar showed the height of grain yield. Grain yield with number of sear flowers hollow pods had negative correlation but with number of pods per plant, seed per pod, seed per plant and 100-seed weight showed positive correlation. At 100 and 75 AW, Mass maturity (MM, end of seed filling) was achieved at 600 GDD after flowering but it was about 520 GDD after flowering at 25 , 50 AW. MM was attained at about 540-560 GDD and 580 GDD after flowering for microsperma and macrosperma types respectively. Electro conductivity (EC) least was attained at about 560- 700 GDD after flowering (It was 7-22 ?s.cm-1g-1). The later harvests were showed the weak tendency to increasing of EC at 25 and 50 AW. Maximum germination rate was achieved at 540-680 GDD (It was 0.49-0.76 per day) after flowering. Dry matter of seedling was attained at 600-740 GDD (It was 87-114 mg) after flowering. Maximum seed vigor occurs at about 20-80 GDD after MM, as tested by EC. Due to reduce of 100-seed weight, percent of seed protein increased but rate of seed protein reduced. The macrosperma cultivars ad height percent of seed protein but microsperma cultivars showed height rate of seed protein. In MM, moisture content of seed was among 16 -26 that is not suitable for mechanical harvest, but it was about 14 -17 after MM that is suitable for mechanical harvest.

مستند نام اشخاص تاييد نشده

حاتمی، علی

مستند نام اشخاص تاييد نشده

قاسمی گلعذانی، کاظم، استاد راهنما

مستند نام اشخاص تاييد نشده

آلیاری، هوشنگ، استاد راهنمای همکار

مستند نام اشخاص تاييد نشده

شکیبا، محمدرضا، استاد مشاور

مستند نام اشخاص تاييد نشده

مقدم، محمد، استاد مشاور همکار

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