Search or add a thesis

Advanced Search (Beta)
Home > Evaluation of Some Commercial and Candidate Cultivars of Spring Wheat Triticum Aestivum L. for Salt Tolerance

Evaluation of Some Commercial and Candidate Cultivars of Spring Wheat Triticum Aestivum L. for Salt Tolerance

Thesis Info

Access Option

External Link

Author

Kanwal, Hina

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2015

Thesis Completion Status

Completed

Subject

Botany

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/7772/1/Hina_Kanwal_Botany_UAF_2015_Part-1%20%281%29.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726138163

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


A study was planned to assess the salt tolerance potential of 10 wheat cultivars, five newly developed (S-24, Saher-2006, Inqlab-91, Faisalabad-2008 and Lasani) and five candidate (P.B-18, M.P-65, SH-20, AARI-10, G.A-20). Two salinity levels were (0 mM and 150 mM) applied at three growth stages seedling, tillering and boot stages. This study comprised independent two experiments. The first experiment was performed to screen the 10 wheat cultivars on the basis of biomass production and yield under saline stress. Four wheat cultivars (S-24, Saher-2006, Lasani and AARI-10) were selected on the basis of the results of the first experiment and again grown in the following year for detailed study of physio-biochemical responses under saline stress imposed at different growth stages. Saline stress application at different growth phases caused a marked reduction in biomass production, yield, different gas exchange attributes, photosynthetic pigments and water relation parameters. However, comparatively cvs. S-24 and Saher-2006 showed less reduction in these attributes due to saline application at three growth stages. Less cholophyll degradation, comparatively higher photosynthetic and transpiration rate and leaf turgor were observed due to saline stress imposition at the boot stage. However, it was greater due to salinity imposed at the seedling stage. Furthermore, NaCl applied at three different growth stages markedly increased the endogenous Na+ level and caused reduction in Ca2+, K+, K+/ Na+ and Ca2+/ Na+ ratios. Overall, cvs. Saher-2006 and S-24 maintained higher K+/ Na+ and Ca2+/ Na+ ratios as compared to the other wheat cultivars under salt stress. There was a less decrease in K+/ Na+ and Ca2+/ Na+ ratios under the saline environment developed at the boot stage while maximum at the seedling stage. A significant alteration in different biochemical attributes was observed in all wheat cultivars under saline stress imposed at three growth stages. For example, a substantial increase was observed in H2O2, MDA, soluble proteins, proline, glycinebetaine and activities of different aintioxidants (SOD, POD, CAT, phenolics). Different wheat cultivars showed variation in these biochemicals in response to salt stress applied at different growth stages. Maximum antioxidative enzymes activities were observed in cvs. S-24 and Saher-2006 due to saline stress application at three growth stages. However, cvs, S-24 and Sher-2006 had higher accumulation of GB and proline as compared to the other cultivars (Lasani and AARI-10) under saline stress imposed at early growth stages (seedling and tillering) than at the boot stage. Anatomical studies of four wheat cultivars under saline stress applied at different growth stages showed that cvs. S-24 and Saher- 2006 had thick epidermis of stem and root, greater schlerification in stem and leaf, higher vascular bundle and metaxylem area and greater cortical cell area due to saline stress applied at three different growth stages than the other two cultivars (Lasani and AARI- 10). These anatomical characteristics showed their better adaptability under saline environment in terms of checking water loss, good water storage capacity, and better toxic ion compartmentalization due to large size vacuoles of cortical cells and better water and nutrient transport through vessels. So, it can be inferred that wheat is more prone to adverse effects of saline stress when applied at the early growth stage (seedling) than at later growth stages. Overall, of all wheat cultivars cvs. S-24 and Saher-2006 were more tolerant to saline stress.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

تاریخ کا سب سے بڑا جلسہ

تاریخ کا سب سے بڑا جلسہ

10اپریل 1986ء لاہور پاکستان کی تاریخ کا سب سے بڑا جلسہ اور استقبال جس میں 10لاکھ سے زائد افراد نے شرکت کی ۔لاہور ائیر پورٹ سے مینار تک چند منٹوں کا سفر گھنٹوں میں طے ہوا ۔ٹنوںکے حساب سے پھولوں کی پتیاں نچھا ور کی گئیں کہ لاہو ر کی سڑکیں سرخ ہو گئیں لاہور کے ہوٹلوں ریڑھی بانوں کے پاس کھانے پینے کی اشیاء ختم ہو گئی تھیں ۔عوام نے ایسا جلسہ پھر کبھی نہ دیکھا تھا اور یہ وڈیو آپ پہلی بار دیکھ رہے ہیں ۔(بشکریہ :اسلم خواجہ )

 

نقد رجال میں امام بوصیری كا منہج مصباح الزجاجہ کی روشنی میں

Imām Ahmad Al- Būṣīrī is a famous Muhaddith of the 8th Hijra century. He has authored many important works in the field of Hadith. One of them is his famous book: "Miṣbāḥ al-Zujajah fī Zawaed ibn Mājah".  Imām Būṣīrī is an important scholar of the field of ῾Ilm al-Jarḥ wa al-Ta῾dīl. In the book mentioned above, the Imām has collected only those aḥādīth of the book Sunan Ibn Mājah, which were reported by Imām Ibn Mājah only apart from the other authors of the six books of Sunan.  After collection, Imām Būṣīrī clarified the authentic and unauthentic narrations. There were some narrations about which he remained silent.  This paper aims to discuss the methodology of Imām Būṣīrī in authentication of narrations of his book "Miṣbāḥ al-Zujajah fī Zawaed ibn Mājah".

Portrayal of Camelids in Pastoral Economy of Northeastern Herders of Balochistan

Balochistan is the largest province of Pakistan; which makes about 44% of the total geographical area of the country. The livestock sector is very important with the province housing about 20% of the national stock. At present national camel herd comprises about one million heads of camels, and 13% growth rate has been observed since 1996 to 2006. Out of the total national camel population 41% found in Balochistan province alone. The country produced 38.69 billion liters milk in year 2006-2007 and made its place as one of the higher milk producing country in international ranking but per capita milk availability (170. liter) is still very low. The share of different species has been reported as buffalo 25.04 billion liters, cow 13.33 billion liters and goats 0.32 billion liters. In spite of 0.92 million camel populations, camel milk has not been documented in the grey record and has never been appreciated, valued and estimated properly. No doubt the automobile and machine transportation decreased its draught role, but it is still an important food animal and indigenous animal genetic resource. Camel is a hardy animal and has proved his worth in the long prevailing droughts in Balochistan, remained almost for 10 years (1994-2004). According to camel herders, the only cause was the hardiness of camel and long traveling ability enabling him to access to feed sources and water points. It was revealed that camel still play important role, provide cash earning, transportation, food and wool, etc. The camel herds in the northeastern Districts of Balochistan are mostly practice semi-nomadic livestock keeping system, therefore, they follow a regular pattern of seasonal migration according to the season, foliage availability and agricultural operations. Women perform all management practices at home, and take care of young and sick animals. Camel is the major player and the food and livelihood earning source in the existence of pastorals people of Suleiman mountainous region. Mangrota camel fair (Mela) is one of the largest socioeconomic activities of camel herders of the said region, which is held every year in the month of October, in Mangrota town. Mangrota is a town of tehsil Thonsa, District Dera Ghazi Khan in the Punjab province of Pakistan. It was found that the camels are brought mainly by the people of viSuleiman mountainous region, bought mostly by the people of NWFP (North West Frontier Province) and Western and Central Balochistan. The herders avail a good opportunity for the sale of their animals on one hand and exchange their expertise, vision and social chit chat on the other hand. Camels are a potential milch animal and produce more and quality milk than any indigenous cattle breed in Pakistan, but their potential have never been realized and couldn’t be harvested as a prospective milk producing animal. A study on milk production ability was conducted on 40 lactating camels in northeastern Balochistan and samplings were done at the end of each second week (level) for a whole lactation in 2006. The daily milk yield ranged from 6.045-11.732 kg/day with a mean daily yield as 10.22±0.43 kg/day (mean±SE). The lactation length ranged from 231-275 days with a mean of 259±7.02 days. Many factors found affecting daily and lactation yield i.e. affect of age and parity, stage of lactation, season of production, type/breed of camel and calving season on milk production. Among parities, 5 th parity (13.50 year) of age had the highest lactation yield (3168 kg) of milk followed by 3 rd parity (8.75 year) of age with (3051 kg) of milk and 4 th parity (11.45 year) of age with (3010 kg) of milk and lowest milk was produced in the 1 st parity (4.5 year of age ) with (1566 kg) (p>0.05). Six multiparious camels regularly milking were selected for the study of milk composition, and the milk was analyzed for two stages of lactation (2 nd and 7 th month of lactation). The study revealed that the Kohi camel milk contains average of fat, protein, lactose and ash contents as 2.63, 5.05, 4.01 and 0.70%, respectively. The parity affected the milk fat, protein, lactose and ash contents. The fat and protein contents increased with the advancement of the parity but to a certain level (parity 5). Stage of lactation also affected the milk composition and fat percentage was higher (2.70%) in the second stage of lactation than (2.57%) those of first stage. protein was higher in the first stage of lactation (5.56% and 4.15% respectively) than second stage of lactation (4.54% and 3.87% respectively). Lactose was higher in the first stage of lactation (3.67%) than second stage of lactation (2.55%), while the ash was higher in the second stage of lactation (0.73%) than first stage of lactation (0.68%). Average mineral profile of the milk samples was observed as Na (49.42 mg/100g), Mg (15.04 mg/100g), Fe (0.55 mg/100g), Mn (0.066 mg/100g), Cu (0.22 mg/100g) and Zn (1.42 mg/100g). All minerals viiexcept Na had showed a very minute variation among parities. An irregularity was found in the chemical composition of the camel milk based on the parity and stage of lactation. Not only the parity and stage of lactation but also the age of the animal, continuous herd’s movement, nutritional management and the seasonal difference might have contributed in the cause of all irregularities. Keeping in view the important roles camel play and its future importance as a valuable animal genetic resource, authorities are stressed upon to reconsider this animal specie in the research and development plans of the country. The potential of camels as a dairy animal was demonstrated under traditional management, to further elucidate factors affecting the milk yield capacity, studies under different management and controlled environment were recommended.