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Assessment of Genetic Diversity in Tomato Germplasm Based on Morpho-Physiological Traits and Molecular Markers

Thesis Info

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External Link

Author

Rizvi, Abida

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2013

Thesis Completion Status

Completed

Subject

Botany

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/1586

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725540809

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Cultivated tomato (Solanum lycopersicum L.) an important vegetable crop is reported to have very low genetic diversity. The present study was conducted to determine the extent of heritable variation in tomato germplasm. Germplasm comprised of 82 accessions including accessions of Solanum lycopersicum L. and four wild species S. chilense, S. habrochaites, S. pennellii and S.pimpinellifolium. At morpho-physiological level data was recorded for qualitative and quantitative traits from seedling to reproductive stages in 2006 and 2007. F-ratio and heritability values were high for most of the traits. Cluster analysis revealed grouping of accessions based on similarities irrespective of geographical origin. Principal Component Analysis (PCA) revealed positive contribution of fruit traits on PC1 while vegetative and agronomic traits on PC2. Towards yield Correation studies revealed complex pattern of association. Path analysis revealed that direct selection of the genotypes with greater equatorial diameter or multiple trait selection for traits which exert indirect positive effects through fruit diameter may meet the target of yield improvement. The germplasm investigated had enough variation (>50%) which can be employed in future breeding programs for yield as well as other vital combinations. Keeping in view the results of path analysis and other statistics 19 accessions have been identified for yield enhancement program. Genetic variance of 82 genotypes was studied for seed protein profile also. Out of 23 bands one was monomorphic and 22 were polymorphic. Low polymorphism was detected and cultivar identification was not possible. Cluster analysis did not reveal differentiation either for agronomic traits or origin. In a representative sample of 39 accessions microsatellite analysis was performed employing 15 SSR markers. An average of 2.8 alleles per locus was observed. Average Polymorphism Information Content (PIC) value was 0.507. From the results it is concluded that SSR markers were effective in detecting polymorphism in crops with high genetic similarity. Regarding wild species S. pimpinellifolium was distinguishable while for rest of three species it seems pertinent to conclude these as cultivated tomato not the wild species.
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عبدالرحمن ناصر اصلاحی

عبدالرحمان ناصر اصلاحی
افسوس، مدرسۃ الاصلاح اور جامعہ ملیہ اسلامیہ کے تعلق کی ایک اہم یادگارنہ رہی، مولانا عبدالرحمان ناصر اصلاحی جامعی کی قریب ایک صدی کی حیات مستعار پوری ہوئی، اناﷲ، ان کی شخصیت کی طرح ان کا قلم بڑا شگفتہ تھا، پروفیسر عبداللطیف اعظمی کے ہم درس تھے اور ڈاکٹر ذاکر حسین اور پروفیسر مجیب جیسے نامور اساتذہ سے اکتساب فیض کیا تھا، پروفیسر خلیل الرحمان اعظمی کے ہم وطن بھی تھے اور ہمدم وہم ساز بھی، جب تک صحت نے ساتھ دیا، دارالمصنفین آتے جاتے رہے، اب وہ اﷲ تعالیٰ کے جوار رحمت میں ہیں، قارئین سے بھی مغفرت کی دعاؤں کی درخواست ہے۔ (عبد السلام قدوائی، جنوری ۲۰۰۹ء)

 

لفظ خاتم کا معنی و مفہوم ائمہ لغت ومفسرین کے اقوال کی روشنی میں ایک تحقیقی جائزہ

Almighty Allah Has bestowed us with more than one lakh andtwenty four thousand prophets for guidance of human being. It started with Hazrat Adam As and end up with hazrat Muhammad (PBUH). As it was endedwith hazrat Muhammad PBUH, so he was called with the title of ‛. ‚خاتم; النبیینThe Holy Prophet PBUH himself said “No Prophet will come after me”. Thisbelief keep pivotal value among all beliefs. According to Muslim scholars, anyone who has doubt on finality of Prophethood will be considered nonMuslim. Therefore in this article the word ‛ ‚خاتمis analyzed comprehensively in the light of various sayings of different Muslim scholars

Factors Impacting Female Teachers’ Competencies of Secondary Public Schools of Karachi

In the education system the teachers play a very important role. Therefore, a teacher needs to have her own philosophy of education on which she makes educational decisions for her students. Her philosophy of education needs not to be the once presented by different educationist and philosophers, it could be a mixture of the ones already available or something new and significant that she found effective in teaching her students. The females are more suitable for teaching profession and majority of women join it as career in our country because they can understand the psychological needs of the students easily. The teacher has to understand the little things that affected the ability to learn the temperature in the classroom, the time of the day. She has an understanding of human nature and the maturity at secondary level. Especially while teaching and showing impact of different factors on teaching competencies. The research topic is “Factors impacting female teachers’ competencies of secondary public schools of Karachi”. This study aimed to find out the impact of different factors i.e. socio economical, emotional, political, educational, environmental and administrative problems related to female secondary school teachers on their teachingii competency. It was predicted that the problem would have adverse impact on teaching performance of government secondary school teachers. The aims and objectives of this study were: (1) To find out the problems of female school teacher. (2) To identify the socio cultural problems. (3) To find out the environment problems of female school teachers. (4) To measure the teaching competency of teachers by relationship between teachers and students. (5) To find out the personal school problems of female teachers. This research study was quantitative cum qualitative in nature and discussed the teaching competencies of female teachers at secondary level. The population of this study was all the government girls’ secondary schools of Karachi city. The total sample of the study was comprised of 50 secondary female schools. Ten (10) towns and their 300 teachers were selected for study. The tools used for this study were questionnaire and interviews of Principals, District Education Officers and one Scholar. The study was survey based and descriptive research. The data were systematically tabulated and statistically analyzed by using simple mean, standard deviation and percentage graphic bar to show the exact result of the data. Recommendations were drawn in the light of results and conclusion.