Search or add a thesis

Advanced Search (Beta)
Home > Morphogenetic Characterization of Wheat Germplasm for Drought Tolerance

Morphogenetic Characterization of Wheat Germplasm for Drought Tolerance

Thesis Info

Access Option

External Link

Author

Muhammad, Ikram

Program

PhD

Institute

Hazara University

City

Mansehra

Province

KPK

Country

Pakistan

Thesis Completing Year

2015

Thesis Completion Status

Completed

Subject

Natural Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/2793/1/Ikram_PhD_Thesis_%28asif%29.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726724370

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


Drought is the main environmental problem that causes high negative effect on cereals crops particularly wheat. It is a great challenge for crop breeders to produce cultivars having good potential of survival in drought stress environment. In the present research one hundred and three Wheat genotypes were evaluated for drought stress. On the basis of morphological traits, genotype 010718 ranked first on the basis of days to maturity (DM), 010771 showed highest number of tillers per plant (NTP), 010817 has highest spike length (SL), 010814 has highest peduncle length (PL), 010813 has greatest number of spikelets per spike (NSPS), 010874 has highest 1000 grain weight (GW), 010874 have highest harvest index (HI) and 010822 showed optimum plant height (PH). These genotypes could be used for further breeding programs to improve wheat production under drought stress conditions of Pakistan. The same genotypes were also evaluated for physiological tests including relative water content normal (RWCN), relative water content stress (RWCS), water loss rate normal (WLRN), water loss rate stress (WLRS) and water use efficiency (WUE) under both normal and drought stress regimes. The analysis of variance (ANOVA) results concluded that highly significant differences were found among the genotypes in both normal and drought stress. 010824 recorded the highest RWC in normal while 010809 recorded the highest relative water content (RWC) in drought stress conditions. 010808 and 010808 was ranked first on the basis of water loss rate normal (WLRN) and water loss rate stress (WLRS) while 010831 was ranked first in water use efficiency (WUE) test. These genotypes may be suggested for further cultivation in irrigated and rainfed areas of Pakistan. In the present study thirteen root traits were evaluated for drought tolerance. All root traits showed significant differences among the genotypes at (P≤0.01). 010842, 011862, 010853, 010829 and 011881 ranked first on the basis of root traits and considered to be best for drought stress areas of Pakistan. All the genotypes were screened with 105 SSR markers. Most of the markers showed high level of polymorphism. Total of 279 polymorphic alleles generated. The alleles per locus ranged from 1-3 and an average of 2.63 per locus. Polymorphic information content (PIC) values of the markers was calculated in the range of 0.00–0.59. The association analysis revealed that one hundred and three genotypes having different genetic background were classified into fifteen distinct groups. Total of 08 MTAs were recorded for root traits in GLM and MLM models. The genetic information obtained in the present study in the form of MTAs/QTLs could be utilized for breeding programs to improve drought stress tolerance.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

کچھ مصنف کے بارے میں

کچھ مصنف کے بارے میں
بسم اللہ الرحمن الرحیم نحمدہٗ و نصلی علی رسولہِ الکریم
قانون ِقدرت ہے کہ جب دنیا میں صدق و حقیقت پر خواہش اور نفس پرستی کے غبار اور پردے پڑ جاتے ہیں تو اللہ تعالیٰ اپنے بندے پیدا کرتا ہے جو صدق و سچائی اور حقیقت کو دنیا میں روشن کر دیتے ہیں۔
ایسے ہی میرے تایا زاد حافظ محمد اکرم راشدؔ صاحب کو اللہ تعالیٰ نے گو نا گوں صفات سے نوازا ہے۔ عارف والا کے نواحی گائوں 37 ای بی میں 1962 کے اوائل میں علمی خانوادے میں آنکھ کھولی والدِ محترم حافظ اللہ یار رحمۃ اللہ علیہ عالم باعمل تھے ابتدائی تعلیم اُ ن سے حاصل کی ۔ پانچ سال کی عمر میں والدِ محترم داغِ مفارقت دے گئے ۔ اُس کے بعد حقیقی چچا میرے والدِ محترم حضرت علامہ حافظ شیر علی رحمتہ اللہ علیہ نے آغوشِ محبت میں لیا اور علم کی تکمیل تک ساتھ دیا ۔ میٹرک کر نے کے بعد علمی پیاس بجھانے کے لئے کراچی گئے وہاں علم کی پیاس بجھاتے ہوئے علم کے سمندر بن گئے ۔ فاضل درسِ نظامی ، فاضل طب وجراحت، فاضل عربی، فاضل اردو کرنے کے بعد پنجاب گورنمنٹ میں بطورِ مدرس تعینات ہوئے ۔ دورانِ سروس ایم ۔اے ایجوکیشن ،ایم اے اسلامیات اور ایم اے عربی (گولڈ میڈلسٹ) پاس کیا۔
علمی زندگی میں روزنامہ ایکسپریس ، نوائے وقت میں مضامین لکھے اور عوام کی کثیر تعداد نے مضامین کو پسند کیا۔عارفوالا کے نواحی گائو ں میں ہیڈ مدرس رہے، اب ریٹائر ہو چکے ہیں اور عارفوالا شہر میںبطورِ خطیب خدمات سر انجام دے رہے ہیں ۔ حافظ صاحب اپنے حلقہ احباب میں اپنی خوش اخلاقی اور بذلہ سنجی کی وجہ سے بہت مقبول ہیں ۔ اِن کی کتاب نسیمِ سخن اُن کے علمی تبحّر کی گواہ...

قرآنی اصولوں کی روشنی میں معاشرتی استحکام

Islam is the religion of nature. It not only approves the social interaction among the masses, but also helps in its development towards positive ends. Islam has given natural and universal principles which help its followers to develop a harmonious society, discouraging all the attempts to divide the society into different sections. Islamic society is based upon the following fundamental principles i. E equality, harmony of thoughts, justice, amar-bilmaaruf-wa-nahi-anilmunkar (ask for good and forbid from evil), unity, sense of responsibility, virtue and evil, abolition of sectarianism & fulfillment of promises, reflecting the universality of the religion, Islam. Pakistan today, is facing various social problems like terrorism, corruption, poverty, unemployment, broken families, sectarianism, onslaught of western culture and demand of unrestricted liberty by womenfolk. The moral degradation of the society is due to the fact that the true Islamic spirit and moral teachings and trainings of Islam have not been applied with true mind and honest intentions. The moral values are ignored by the media which is the cause of great concern.

Date Palm Diversity in Pakistan and its Relationship With World Dates Germplasm for Exploring the Center of Origin of Phoenix Dactylifera L.

Date Palm, (Phoenix dactylifera L.) often called ‘nakhl’, ‘khajor’, or ‘khaji’ belonging to the family Arcaceae (Dransfield et al., 2008) is an evergreen tree. It is the hardiest among tropical fruit trees and exceeds most other fruit crops in productivity and adaptability. The characterization of date palm at the genetic level supplemented with phenotypic character is of great concern as an important step towards efficient conservation, maintenance and utilization of the existing genetic diversity. The present research work was carried out to investigate the phenotypic variability and genetic diversity of the date palm germplasm present in the 16 districts of Pakistan. A planned survey of date palm growing regions of Pakistan in 4 provinces (Punjab, Sindh, Khyber Pakhtunkhwa and Balochistan) and Azad Jammu and Kashmir was conducted for collecting leaf and fruit samples of date palm. Young and healthy leaves were used to extract DNA whereas seeds were extracted from fruit for recording qualitative and quantitative morphometric diversity. In total, 2460 seeds of 82 accessions were included in morphometric study. About 139 date palm accessions were evaluated for genetic variability and population structure. The recorded data were analyzed using a set of different statistical tools for making significant interpretation. A total of 19 traits (5 quantitative and 14 qualitative) enabled an assessment of phenotypic diversity and structure. The measured traits: dorsal area, lateral area, embryo to apex length, embryo to base length and their percentage, seed base, micropyle position, seed wings and frequency of wings were more variable. PCA grouped all the accessions according to their phenotypic relations and morphometric characteristics. Cluster analysis distributed all the 82 Pakistani date palm accessions into their three original groups. The results reflect huge seed morphometric variation and presented seeds as a powerful tool for phenotyping. Furthermore, our study also exhibited strong resemblance and possible relationship between some groups of accessions. All 18 SSR primer pairs successfully analyzed molecular genetic variation and produced multiple fragments in the Pakistani collection as well as in date palm germplasm representing 10 different date palm growing regions of the eastern and western world. These set of markers proved themselves as highly polymorphic for genetic diversity estimation and population structure within and among all the geographically spaced population of xvii worldwide accessions. The findings of implemented markers revealed 2-23 alleles per locus with high level of expected heterozygosity in the accessions collected from Pakistan. The most informative SSR marker in this study was mPdCIT078. In addition, cultivar identification key were established. It allowed resolving the difference and constructs the relationships of the same name or vice versa. Our results also suggested the existence of population subdivision at the regional level. Population from semi arid – monsoonal or canal irrigated (seasonal or perennial) belt of Punjab (Bhakkar, Muzafargarh and Rahim Yar Khan) and dry arid ecological zones of Balochistan (Kech, Gwadar) are stable in their structure whereas DAPC distributed 342 accessions of 10 date palm growing countries into two major geographical groups (eastern and western). It is concluded that Pakistani germplasm has huge diversity and genetic pool were close to the eastern world especially Iraq and Oman.