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Home > Ecotypic Adaptations in Bermuda Grass [Cynodon Dactylon L. Pers. ] for Salt Stress Tolerance

Ecotypic Adaptations in Bermuda Grass [Cynodon Dactylon L. Pers. ] for Salt Stress Tolerance

Thesis Info

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External Link

Author

Tufail, Aasma

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Botany

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/13260/1/Aasma_Tufail_Botany_2016_HSR_UAF_07.09.2016.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725944759

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Bermuda grass [Cynodon dactylon (L.) Pers.] belongs to the family Poaceae which is one of the most tolerant and widely distributed turf and fodder grasses. It has cosmopolitan nature and specific adaptations to a variety of environmental hazards. Naturally adapted populations of C. dactylon from different regions of the Punjab, Pakistan were established in the study area, Old Botanic Garden, University of Agriculture, Faisalabad in normal (nonsaline) and saline soil. Experiment for salt stress (0, 100, 200 and 300 mM NaCl) was arranged in two factor factorial (ecotypes and salt levels) in a completely randomized design (CRD) with ten replications in hydroponic system with half-strength Hoagland’s nutrient solution. Analysis of variance (ANOVA) and LSD for comparison of mean values of the data was statistically analyzed using Microsoft Excel, Minitab statistical software and Redundancy Analysis (RDA) technique. Correlation coefficient was drawn between morphoagronomical, anatomical and physio-biochemical characteristics. Overall salt stress decreased shoot and root fresh and dry weights, shoot length, number of tillers Plant-1, number of roots Plant-1, number of leaves Plant-1, flag leaf area, internode length, number of stomata, stomatal size, epidermal thickness, phloem area, net CO2 assimilation rate, transpiration rate and chlorophyll contents. However increasing effect of salt stress was observed on root length, sclerenchymatous thickness, aerenchyma cells, cortical cell area, metaxylem area, bulliform cell area, trichomes length and density, stomatal conductance water use efficiency, accumulation of Na+ and Cl- along with Ca2+, proline, glycine betaine, total soluble sugars, total soluble proteins and enzymatic and non-enzymatic antioxidants. Of all ecotypes, Derawar fort saline desert (DF-SD) ecotype and Pakanna-hyper saline (PA-HS) ecotypes accomplished better under high salinities than their counterparts from the moderately saline Kalar Kahar lake saline (KKL-S) and Pakanna reclaimed field (PA-RF) and least saline Muzaffargarh river bank (M-RB) and Botanical garden (BG-NS). All the ecotypes on the basis of shoot biomass production, root growth and various physio-biochemical and anatomical features, can be rated according to their degree of salt tolerance as DF-SD>PAHS> UL-HS>KL-HS>KKL-S>S-HS>S-SW>PA-RF>T-W>M-RB>BG-NS. In conclusion, all ecotypes adopt very specific strategy/mechanism to cope high salinities, which indicates the change in their genetic makeup during long evolutionary history.
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میں نے بس تجھ کو چاہا ہے

میں نے بس تجھ کو چاہا ہے
کون سا ایسا جرم کیا ہے

لوگ مجھے کیوں دیکھ رہے ہیں
مجھ سے کیا کچھ غلط ہوا ہے

تجھ کو جس کی خبر نہیں ہے
تیری یاد میں سوکھ چکا ہے

اُس سے اتنی نفرت کیوں ہے
وہ تو تیرا دوست رہا ہے

تیری جدائی سہوں مَیں کیسے؟
تُو کیوں مجھ سے دور گیا ہے

آج کی رات نہ سو پائوں گا
گلی میں تجھ کو دیکھ لیا ہے

تیری گلی میں جاتا کیوں ہوں
ہوش کہاں مجھ کو رہتا ہے

کوئی تو بات ہے دل میں تیرے
میں نے یہ محسوس کیا ہے

رات بنی ہے سونے کو جی
جانے تُو کیوں جاگ رہا ہے

عالم برزخ اور عذاب قبر کا ثبوت ۲۶ قرآنى آىات مبارکہ کى روشنى مىں: اىک تجزىاتى مطالعہ

Holy Quran is the revealed book of Allah Almighty. This holy book has described the fundamental principles for the guidance and success of Human beings. One of the fundamental beliefs is that of life herein after (Akhirat). Allah Almighty has described several stages for the same life. The first destination of man purgatory which is like an interval between death and resurrection. This destination is the beginning point of the graciousness and severe pain in the life herein after. In the article under reference efforts have been made to explore and highlight the Quranic view point about purgatory (the interval between death and resurrection).

Exploring the Role of Psyllium Husk As Therapeutic Agent in Human Subjects

Present research was carried out to evaluate the efficacy of psyllium husk as a therapeutic agent in normal and hypercholesterolemic subjects. For the purpose, dietetic cookies were prepared by replacing straight grade flour with psyllium husk in different combinations @ 5, 10, 15, 20 and 25%. Psyllium husk was analysed for chemical composition, dietary fiber through enzymatic method and functional component arabinoxylan (AX) using GC-MS. Characterization results indicated psyllium husk as a rich source of dietary fiber and arabinoxylan. The treatments of prepared cookies were analysed for physical, chemical and sensory attributes with special reference to dietary fiber, arabinoxylan, gross energy, hardness and color tonality. Physical characteristics showed decline in diameter and spread factor whilst, increase in thickness of treated cookies. Chemical assay revealed higher protein in control cookies whereas moisture, ash, crude fiber & NFE along with dietary fiber and arabinoxylan contents were higher in psyllium based cookies. Softer cookies with low gross energy and better color tone were formed using psyllium husk. Sensory panel explicated cookies quite acceptable however decrease in sensory score was recorded during storage. Considering the results of characterization, dietary fiber and sensory response, one best treatment namely T4 (20% replacement of psyllium husk) was selected along with control for two months efficacy study in human subjects during two consecutive years i.e. 2009-10 (Trial-I) & 2010-11 (Trial-II) for validity of the results. Bio-evaluation trial was carried out in normal subjects following same module in hypercholesterolemics by providing five cookies twice a day to each subject. Results indicated non-significant differences in serum lipid profile and glycemic indices (glucose and HbA1c) of normal subjects after consuming dietetic cookies (T4). Nevertheless, psyllium husk based cookies had positive impact to attenuate the lipid profile of hypercholesterolemic subjects. In this context, elevated base line values of total cholesterol 231.50±6.46, LDL 158.78±8.91, VLDL 35.92±1.36, LDL/HDL 4.99±0.25 and glucose 103.10±7.90mg/dL, were significantly reduced to 202.90±7.26, 134.60±8.13, 30.40±1.05, 4.09±0.17 and 92.07±4.11mg/dL, respectively in the Trial-I. Likewise, significant declining trend was observed in respective traits due to treatment T4 in Trial-II. The percent reduction in total cholesterol was 12.35 & 11.26%, LDL 15.22 & 14.10%, VLDL 13.48 & 12.08% and glucose 10.70 & 12.19%, respectively in Trial-I &II for hypercholestrolemic subjects due to dietetic cookies (T4). However, HDL concentration increased non-momentously during the study period. Likewise, triglycerides level was also affected non-significantly however, a slight decline was recorded. Safety evaluation of dietetic cookies was also carried out simultaneously in both categories of subjects and no sign of abnormality was observed in liver (ALT & AST) and kidney functions (urea & creatinine). It has been observed that high base line value for urea was non-significantly declined after administration of test diet in hypercholesterolemic subjects. Furthermore results for hematological tests depicted safe range in allied parameters i.e. platelets count, ESR, red blood cells and white blood cells indices. It is interesting to mention that the ESR of hypercholestrolemic subjects was momentously affected by using therapeutic diet (T4) as it was reduced to 5.61 and 6.98% in Trial-I & II, respectively. It has been observed that psyllium husk is friendly to the normal subjects nonetheless supportive for the hypercholesterolemic subjects. From the current explorations it is concluded that psyllium husk based cookies (supplemented with 20% psyllium husk) have potential to be used as a functional ingredient against the menace of hypercholestolemia and allied discrepancies in vulnerable segments of the population.