Search or add a thesis

Advanced Search (Beta)
Home > Genetic Mechanism of Some Physio- Morphological Traits of Bread Wheat under Normal and Heat Stress Conditions

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

Thesis Info

Access Option

External Link

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

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


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.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

ایم ۔ حبیب خان

ایم۔ حبیب خاں
یہ سطریں زیر تحریر تھیں کہ معلوم ہوا کہ جناب ایم حبیب خاں بھی رحلت فرماگئے وہ انجمن ترقی اردو ہند کے اسسٹنٹ سیکریٹری اور جناب خلیق انجم جنرل سیکریٹری کے دست راست تھے، نیک طبع اور شریف انسان تھے، جب بھی ملاقات ہوتی تو اپنے خلوص و محبت کا نقش دل پر بٹھا دیتے، دارالمصنفین سے بھی لگاؤ رکھتے، گزشتہ برس لکھنؤ میں ملاقات ہوئی تو دیر تک اس کے مسائل پر تبادلہ خیال کرتے رہے، مدت دراز سے انجمن سے وابستہ تھے، ادب و تنقید ان کا خاص موضوع تھا، اس پر ان کی کئی کتابیں چھپ چکی ہیں، ۶۴؍ ۶۵ برس عمر رہی ہوگی اور صحت اچھی تھی مگر دو ماہ قبل جگر کے کینسر کا عارضہ ہوا اور چل بسے اﷲ تعالیٰ اپنی رحمت کاملہ سے نوازے۔
(ضیاء الدین اصلاحی، مارچ ۱۹۹۸ء)

 

Social Welfare in the Religions of Subcontinent a Critical Study

Islam, Hinduism and Buddhism are among the major religions of Sub-continent. The present study highlights the fact that public welfare is preached by all of these religions. Giving alms for the sake of public welfare is an important part of various Hindu religious practices. The role of latest reformist movements is also worth mentioning along with the Hindu literature related with social well-being. Arya Sam฀j movement did many activities for the welfare of people. The founder of Buddhism made efforts for the betterment of mankind and used his religion and teachings to propagate public welfare. Buddhism rejected the caste system and played an important and effective role to minimize the sufferings of affected community. In this regard Islam rises to the highest pedestal as the topic of Holy Quran is Man. It focuses not only on the worldly success of man but also his success in the hereafter. Islam has gone a step ahead than other religions as the activities of public welfare are considered worship in it. The rights of human beings are given great importance and they are given no less importance than rights of Allah. Moreover, the Holy Prophet (S. A. W) took noteworthy steps for the welfare of whole mankind without any discrimination and these are highlighted in this paper. Islam also gives lineaments of the methods and modes of public welfare and goes beyond the other Semitic and non-Semitic religions in this regard. This paper explores and highlights the measures taken by the mentioned religions in a comparative manner and also proves that Islamic concept of social welfare is not only limited to human beings but it also enfolds other living beings and even plants. Islam provides a complete road map of public welfare. Islamic society not only progresses financially but it also focuses on spiritual, ideological and social progress. The aim of social welfare cannot be achieved unless equilibrium is maintained between rights and duties. Islam not only stresses on the rights of the weak but also safeguards the rights of the rich.

Mohammad Younis

Consequences of discontinuous chicken frying on some important parameters of soybean (SBO), sunflower (SFO) and canola oil (CLO) at constant temperature of 190 o C for 12 h were examined. The quality parameters such as fatty acid composition (FAC) with special emphasis on trans fatty acids (TFAs), free fatty acids (FFAs), iodine value (IV) and peroxide value (PV) of SBO, SFO and CLO were evaluated by taking out the oil samples from the fryer at an interval of 2 h. The total TFAs increased during frying of chicken in the range of 0.77- 1.67, 1.02- 2.62 and 1.29-3.14% in SFO, SBO and CLO. Other chemical parameters such as FFAs was 0.03-0.78, 0.05-0.49 and 0.19- 1.47%, PV was 1.51-3.04, 2.11-6.07 and 2.90- 8.02 meqO 2 /kg of oil increased whereas IV at 154.21- 140.69, 134.50 and 116.10-99.70 g/100g was decreased with respect to time of frying in SFO, SBO and CLO, respectively. The effect of commercial fish frying on the stability of FOs was examined at different intervals of time. The FO samples were collected into two phases; one before frying (unused) and other after frying (used; null replenishment, discarded). The main indicators of FOs determined during frying procedure were FAC, TFAs, FFA and PV. The FAC and TFAs in the FO samples were analyzed using the GC-MS. The TFAs were present in the range of 2.5-3.8, 5.6-14.8 and 7.3-20.8% in the fresh, null replenishment and discarded FO samples, respectively during the different frying periods. FFAs in fresh, NR, and discarded oils were 0.12%–0.24%, 0.22%–1.74%, and 0.80%–3.39%, respectively. PV in fresh, NR, and discarded oils were determined to be 1.15–3.93, 2.71– 7.51, and 2.84–14.68 meqO 2 /kg of oil. It was observed that commercial fryers were notusing the proper oil for frying. Furthermore, the last frying cycle just before discarding the oil may be dangerous for the health of consumers due to their significant level of TFAs, FFAs and PV. An easy UV spectrometric methodology was developed to assay PV of the FO samples. The assay of PV was based on the stoichiometric reaction of triphenylphosphine (TPP) with hydroperoxides available in FO samples to yield oxide of TPP, which indicates a reasonable absorption at 240 nm in UV region. The level of PV was found in the range 0.15-11.66 meqO 2 /Kg of oil in heated CLO samples for 1-12 h at frying temperature (180 0 C). Present methodology was compared with official procedure. The correlation of coefficient (R 2 ) was observed as 0.99525 which found in good agreement with official procedure. The present methodology may be used as a disjunctive to the official procedure, for the analysis of PV in FO samples. In another study the changes in main fat groups like saturated, monoene, trans and polyunsaturated FAs and their key fatty acid ratios (SFA/UFA, cis PUFA/SFA, C18:2/C16:0 and C18:3/C16:0) were investigated during potato chips frying in CLO. Single bounce attenuated total reflectance Fourier transform infrared (SB-ATR-FT-IR) spectroscopy was used for rapid analysis. The data obtained from gas chromatography- flame ionization detector (GC-FID) used as reference. The calibration of main fat groups and their key fatty acid ratios were developed by partial least square (PLS) regression coefficients using 4000 to 650 cm -1 spectral range. FT-IR PLS regression for the predicted SFAs, MUFAs, TFAs and PUFAs were found 0.999, 0.998, 0.998 and 0.999, respectively. Whereas for SFA/UFA, cis PUFA/SFA, C18:2/C16:0 and C18:3/C16:0 the regression coefficients were 0.991, 0.997, 0.996 and 0.994, respectively. We concludedthat FT-IR-PLS could be used for rapid and accurate assessment of changes in the main fat groups and their key fatty acid ratios ratio during frying process. The quantity of total polar compounds (TPC), carbonyl value (CV), conjugated diene (CD) and conjugated triene (CT) were monitored during potato chips frying in canola oil. Transmission Fourier transform infrared (FT-IR) spectroscopy was applied to attain improved sensitivity using 100 μm KCl cell. Partial least square (PLS) regression was applied to assess spectral regions correlating with known value of TPC, CV, CD and CT. Excellent coefficient of determinations were obtained as 0.997, 0.997, 0.999 and 0.999 for TPC, CV, CD and CT, respectively. The calibration models obtained were applied to analyze samples of canola oil drawn during potato chips frying from 1 to 7 h with wide ranges of 1.33 to 19.55% for TPC, 7.12 to 31.06 μmol/g for CV, 3.17 to 26.96 mmol/l for CD and 0.01 to 6.67 mmol/l for CT. A linear relationship was obtained between CD and TPC with a good correlation of coefficient (R 2 = 0.936). Results were compared with values obtained by their standard methods and found to be comparable. Outcomes of the present study revealed that transmission FTIR-PLS method could be used for quick and precise evaluation of oxidative changes occurred during frying process without using any organic solvent.