مكاتیب رسول اور عربی خط نویسی

Islam has borne a deep and lasting impact on all aspects of human life. Inevitably language, which is a crucial factor in the build-up of society, has also been re-vitalized and re-invigorated by Islam. It was Arabia where Islam dawned its early rays, hence it is the Arabic language that got evolved under the revolutionary spirit of Islam. This deep impact has been caused through the two basic sources of Islam i. e. Quran and Hadith. Since our focus is Hadith, hence we shall talk on the impact of Hadith on the Arabic language. Hadith has a lasting influence on the Arabic language, its literature, and the various genres of the Arabic literature. The topmost among these diverse genres that dramatically evolved under the impact of Islam is 'letter writing'. The genre of letter writing has been passing through its evolutionary stages before the Prophet-hood of Muhammad (S. A. W) . Yet the clarity and style that it adopted; the purposefulness that it aspired and opted for; and its utility as an important official correspondence document all happened in the hands of our Holy Prophet (S. A. W) . In short, it turned into a regular genre of literature. Letter-writing owes deeply to the life infusing spirit of our Holy Prophet (S. A. W) for its lay-out and design, its aim and purpose, and basic features. Our Holy Prophet (S. A. W) left a lasting impact on the letter writing that shall always be a source of inspiration for the faithful.

Molecular and Biochemcial Characterization of Selected Wheat Landraces of Pakistan

Pakistani Bread wheat (Triticum aestivum) germplasm consisting of 204 land races belonging to different parts of Pakistan were characterized for phenological pa rameters, disease resistance against stripe rust (Yr) and Karnal bunt (KB), seed struc ture and high molecular weight glutenin subunits. Only one landrace form Dir was re sistant to KB with less than 1% bunted grains. Four landraces were found to be resistant to Yr and moderately sensitive to KB. A positive correlation was found between tillers per plants, plant height, spikelet/spike, grain/spike, TKW and grain yield. Cluster anal ysis divided landraces into seven groups on the basis of morphological similarities. Not all landraces in a cluster belonged to the same geographical origin. A high throughput analysis based on digital imaging was carried out to find the association between grain size, shape and thousand kernel weight (TKW) in Pakistani wheat landraces using PCA and multiple regression. It was revealed that grain thickness has a maximum and direct effect on grain weight. Grain weight is less effected by horizontal area of seed. A total of forty-two different allelic combinations were found for HMW-GS. Higher frequency of Null and 2+12 were observed in this germplasm. The most frequent allelic combination was 2*, 17+18, 2+12 in 25 landraces. Allelic diversity at Glu-1 revealed that Glu-BI is the most diverse locus. Quality score ranged between 4-10, with 33 land races having the highest score of 10. xviii Functional markers were applied to detect various genes related to agronomic traits, quality and disease resistance. These markers have identified a large number of these landraces to have increased height, photoperiod insensitivity, spring habit, lower TKW, lower spike number and decreased yellow pigment content. Favourable alleles associated with drought resistance were present in higher frequencies. Genotyping by sequencing (GBS) was also conducted to understand the genetics of complex traits in these landraces. Awn length was found to be associated with genomic regions on 3B, 1D, 3D, 6A and 7A and plant height on 1D. Highest MTAs were detected for spike length on chromosome 1A, 1B, 2B, 2D, 4B, 5B, 6A, 6B, 7A and 3A. Grain per spike was found to be associated with four linked and one unlinked marker. Marker S2AL_U_919434 explained 22% of phenotypic variation and grain per spike was found to be associated with TKW.