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Genetic Mechanism of Some Physio- Morphological Traits of Bread Wheat under Normal and Heat Stress Conditions

Thesis Info

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Author

Irshad, Muhammad

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2013

Thesis Completion Status

Completed

Subject

Natural Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/1194

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726305457

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Two hundred and twenty bread wheat genotypes with diverse origin were preliminary evaluated under normal temperature and heat stress conditions under field condition. Four heat stress tolerant and three thermolabile wheat strains were selected on the basis of stress tolerance index and relative grain yield performance ratio. These seven genotypes were crossed in diallel fashion including reciprocals. F 1 progenies were evaluated in field and laboratory by laying out two set of experiments, according to RCBD with three replications, one each under normal and heat stress condition. All the agronomic practices were carried out as and when required. Various physio- morphological traits were studied On grand mean basis a considerable reduction in almost all attributes was observed in heat stress as compared to normal temperature regime except for canopy temperature depression and cell membrane thermostability, which showed 17.05 and 6.24 % increase under heat stress condition respectively. Additive gene action with partial dominance was revealed for days to heading, days to anthesis, spike index at anthesis, plant height, spikes per plant, spike length, grains per spike, 1000-grain weight, grain yield per plant, dry biomass per plant at maturity, grain set index, kernels per unit spike dry weight, CTD and CMT while overdominance type of gene action was observed for the attributes viz., spikelets per spike, days to maturity, dry biomass per plant at anthesis and harvest index. Out of seven parents, the best performance under both temperature regimes was showed by genotype BKR-02, which had the maximum value of grain yield per plant and most of its components. This parental genotype exhibited high spike index at anthesis, dry biomass per plant at anthesis, grain set index, number of grains per unit dry spike weight justifying high grain yield in heat stress. Considerable crosses under normal temperature regime were BKR-02 x SH-02, Ch-86 x SH-02, SH-02 x BKR -02 and SH-02 x Ch-86. However, in heat stress regime hybrids with best performance include BKR-02 x V00183, BKR-02 x SH-02, V00183 x Ch-86, SH-02 x BKR-02 and SH-02 x Ch-86. Similarly F1 hybrids as mentioned above registered good performance for various physio-morphological traits confirming the validity of techniques involved for determination of high yielding thermotolerant wheat genotypes for hot irrigated dry climate. Overall situation displayed the significant role of both additive and non-additive genetic variability suggesting the involvement of integrated heat stress breeding strategies which can potentially exploit the additive and non-additive genetic variability in stress free and heat stress conditions.
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مولانا محمد سلیم

مولانا محمد سلیم
سخت افسوس ہے کہ مدرسہ صولتیہ مکہ مکرمہ کے ناظم اعلیٰ اورمہتمم مولانا محمد سلیم صاحب ایک ماہ کی معمولی علالت کے بعد۱۸/جولائی کوبروزشنبہ نمازفجر کے وقت نصف گھنٹہ پہلے رہ گزائے عالم جاودانی ہوگئے۔ اناﷲ وانا الیہ راجعون۔
مولانا کاآبائی وطن کیرانہ ضلع مظفر نگر تھا۔ آپ کے والد ماجد محمد سعید صاحب المتوفی ۱۳۵۷ھ مولانا رحمت اﷲ صاحب کیرانوی المتوفی ۱۳۰۸ھ صاحب ’’اظہار الحق‘‘کے بھتیجے محمد صدیق صاحب کے فرزند ارجمند تھے۔ مولانا رحمت اﷲ صاحب جب ۱۸۵۷ء کی جنگ آزادی میں شرکت کے بعد مکہ مکرمہ ہجرت کرگئے توآپ نے مولانا محمد سعید کوجن کی عمر صرف بارہ برس کی تھی، اپنے پاس مکہ مکرمہ بلالیا اوران کی تعلیم وتربیت کاخاص اہتمام کیا اوروہ بھی مستقلاً یہیں رہ پڑے، چنانچہ مولانا محمدسلیم صاحب کی پیدائش بھی مکہ مکرمہ میں ہوئی۔ حضرت مولانا رحمت اﷲ نے کلکتہ کی ایک مخیرخاتون صولت النساء بیگم کی امداد واعانت سے مکہ کے محلہ خندریسہ میں زمین کا ایک پلاٹ خریدکرایک عمارت بنوائی اور ۱۲۹۰ھ میں انہی خاتون کے نام پر مدرسہ صولتیہ کے نام سے اس عمارت میں ایک مدرسہ جاری کیا تھا۔مولانا محمد سلیم صاحب نے اسی مدرسہ میں تعلیم پائی۔ فراغت کے بعد پندرہ بیس سال اسی مدرسہ میں درس دیا، ۱۳۴۶ھ میں اس کے نائب ناظم اور ۱۳۵۷ھ میں ناظم مقررہوئے جس پر وہ اخیرتک رہے۔
مولانا نے نصف صدی سے زیادہ کایہ مدرسہ کے اہتمام وانتظام کازمانہ جس عالی ہمتی،صبر واستقلال فہم وتدبر اورلیاقت وقابلیت سے گزاراہے، وہ اُن کی زندگی کاسب سے بڑا اور دوسروں کے لیے ایک بڑاسبق آموزکارنامہ ہے۔ چنانچہ اسی اثنا میں جب ملک کے سیاسی حالات بدلے تو آپ کوچند در چند دشواریوں اور مختلف قسم کی آزمائشوں سے سابقہ پیش آیا، لیکن آپ نے بڑی پامردی اور ہمت واستقلال سے ان کا مقابلہ کیا۔ انہی...

مشاكل اللغة العربية في نيجيريا

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