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Breeding Tomato for Fruit Production With Urban Sewage Water

Thesis Info

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Author

Raja, Shameem

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2003

Thesis Completion Status

Completed

Subject

Natural Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/2053/1/2338S.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676725657446

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Wastewater is often used for irrigation, especially in farming near urban areas, causing heavy metal accumulation and pathogenic infection in soils and crops grown there. A socio- economic survey conducted in a peri-urban area in Faisalabad called “Uchkara” revealed that in spite of being aware of the potential harmful effects of waste water, farmers preferred to use it due to its low cost and lack of alternatives. Comparison of irrigation water from different sources showed that in wastewater the concentrations of Cr, Mn, Zn, Ni, and Pb were many folds higher than their recommended safe limit, rendering affected water sources unfit for use in irrigation. Crops irrigated with this waste water also had very high concentrations of heavy metals. Higher concentrations were found in leafy vegetables than in other crops. Screening was carried out to identify high yielding and heavy metal tolerant tomato genotypes when irrigated with waste water. Diverse tolerance to heavy metals and yield- related traits were observed among tomato accessions. Higher concentrations of metals were found in vegetative parts than in fruits. The concentrations of Cr (0.35-50 ug/g), Mn (3.75- 16.25 ug/g), Ni (0.75-3.25 ug/g), Pb (0-3.75 ug/g) and Zn (13.74-69.5 ug/g) varied in fruit tissues of different tomato accessions. The tomato accessions PB-017906 and 10592 had better fruit yield and appeared relatively tolerant to heavy metals accumulation. With maternal effects and additive type of gene action was involved in the inheritance of number of flowers and number of fruits, while a dominance type of gene action was involved in the inheritance of heavy metals tolerance. Transcriptome analysis of heavy metal tolerance genes i.e., HSP and M. Thio showed that tomatoes respond to high concentrations of heavy metals through increased transcription of the HSP and M. Thio genes. It was observed under Pb and Cr stress that HSP and M. Thio protein transcripts accumulated to levels many times higher than in the in roots and leaves of control plants, reducing protein damage from heavy metals and sustaining cellular homeostasis. PCR-based diagnostics showed that the waste water had S. enterica bacterium. In contrast, tomato fruits were free of S. enterica contamination in 14 out of 16 (87.5%) tomato accessions, showing that most of the time S. enterica was physiologically blocked from gaining access to the tomato fruit. Although waste water application is the need of time the resulting information from this research will be helpful in the development of low metal-accumulators as well as S. enterica tolerant tomato genotypes suitable for heavy metals and bacterial problems by the use of wastewater.
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۳-متی

۳-متی

"أَمْ حَسِبْتُمْ أَن تَدْخُلُواْ ٱلْجَنَّةَ وَلَمَّا يَأْتِكُم مَّثَلُ ٱلَّذِينَ خَلَوْاْ مِن قَبْلِكُم مَّسَّتْهُمُ ٱلْبَأْسَآءُ وَٱلضَّرَّآءُ وَزُلْزِلُواْ حَتَّىٰ يَقُولَ ٱلرَّسُولُ وَٱلَّذِينَ آمَنُواْ مَعَهُ مَتَىٰ نَصْرُ ٱللَّهِ أَلا إِنَّ نَصْرَ ٱللَّهِ قَرِيبٌ۔"[[1]]

"پھر کیا تم لوگوں نے یہ سمجھ رکھا ہے کہ یونہی جنت کا داخلہ تمہیں مل جائے گا، حالانکہ ابھی تم پر وہ سب کچھ نہیں گزرا ہے، جو تم سے پہلے ایمان لانے والوں پر گزر چکا ہے؟ اُن پر سختیاں گزریں، مصیبتیں آئیں، ہلا مارے گئے، حتیٰ کہ وقت کارسول اور اس کے ساتھی اہل ایمان چیخ اٹھے کہ اللہ کی مدد کب آئے گی اُس وقت انہیں تسلی دی گئی کہ ہاں اللہ کی مدد قریب ہے"۔



[[1]]     القرآن ،۲ : ۲۱۴۔

Line Item Budgeting on Labor Costs to the Level of Income

Library research is a data collection technique through the library in the form of literature books, and lecture materials that are relevant to the problem under study. In this study, the authors used the following data collection methods Research library (library research) It is a data collection technique through the library in the form of literature books, and lecture materials that are relevant to the problem under study. Field research (field research) is direct retrieval of the object under study by taking the following steps Observation, namely data collection through direct observation of the object under study, Interviews, namely conducting interviews with leaders and parties interested in the object of research.

Determinants of Corporate Financing Patterns and Their Impact on Corporate Financial Performance

For decades, factors affecting corporate financing patterns are being debated. It starts with the Miller and Modigliani (1958) theory of capital structure irrelevance. The theory passed through evolutionary process and researchers observed the behavior of corporate financing. Studies in late 1990s observed the role of corporate ownership structure in determining corporate financing pattern. However, literature provides no uniformity in determinants of financing patterns in different environments. This study investigates factors affecting corporate financing patterns in various ownership structures in textile and sugar sectors of Pakistan. It also discovers the relationship between financing patterns and companies’ financial performance. It explores applicability of financing theories (trade off and pecking order) to the general situation in Pakistan, and in particular to the textile and sugar sectors. Textile sector is by far the biggest slice of six hundred and fifty listed companies at Karachi Stock Exchange (KSE) and sugar sector is the second largest sector of Pakistan. Majority of these companies are family-owned, with controlling equity interest which leads to insider control and concentrated ownership. During 1995-2004, textile sector financial performance was poor (Shah, 2007). The empirical analysis pursued 108 listed companies from textile and thirty five companies from sugar sector of Pakistan for the period 2001-06. Using Fixed Effect Model, the study concludes that group businesses, managerial ownership, institutional ownership, fixed assets business risk and profitability are statistically significant variables for both textile and sugar sectors of Pakistan. The analysis show negative relationship between debt financing and corporate financial performance in both the sectors. Major financing source for the textile and sugar sector is debt financing, particularly short term debt. Both the sectors depend on bank loan because the loan can be accessed at subsidized rate and political influence. This pattern of corporate finance reduced the incentive to mobilize capital through equity and public debt market. Partial support has been found for tradeoff theory in the textile sector of Pakistan. Sugar sector has partial support for pecking order theory. Securities and Exchange Commission of Pakistan (SECP) should take measures to strengthen the capital market for debt in order to attract the corporate sector to be listed and traded actively. Measure should be taken to provide confidence to the investors and frequent market crashes should be avoided. This will provide more opportunities to the corporate sectors for financing businesses instead of relying only on the financial institutions. Instead of prevailing numerous debt recovery laws used for different motives, a comprehensive bankruptcy law should be framed that could protect the rights of debtor as well as creditors. The policies are needed that help to strengthen the institutions. No political influence could be able to get undeserved financing on non professional basis.