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Articles by Altaf-ur-Rehman Rao
Total Records ( 4 ) for Altaf-ur-Rehman Rao
  Mohammad Arshad , Salah-ud-Din and Altaf-ur-Rehman Rao
  To analyze the vegetation a phytosociological study of fenced and unfenced reserves of National Park Lalsuhanra was conducted. Three sites were selected at I) fenced unirrigated ii) fenced irrigated iii) unfenced desert area. Three quadrate measuring 100 x 100 m2 were laid on each site to record the frequency, density and coverage of plant species. Plant communities were determined on the basis of Importance Value Index (IVI) and each was named after the leading species. A total of 19 plant species in the fenced un-irrigated, 17 in fenced irrigated and 13 in unfenced, un-irrigated desert area were recorded. Plant communication recognized were 1) Farsetia hamiltonii-Stipagrosts plumosa, in fenced unirrigated 2) Cymbopogon jwarancusa - Fagonia cretica in fenced irrigated and 3) Stipagrostis plumosa - Acacia jacquemontii in unfenced unirrigated desert area. The natural vegetation of all the three sites in the reserve areas of Natural Park Lalsuhanra was mainly herbaceous but in degrading form. Because of overgrazing the vegetation cover in unfenced desert ares was in decreasing state as copared to protected area.
  Mohammad Arshad , Altaf-ur-Rehman Rao , Ghulam Akbar and Munir Akhtar
  The inherent genetic potential of four ecotypes of a perennial grass Sporobolus iocladus, collected from four habitats of Cholistan desert, showed considerably high genetic variation with regard to morphological characters recorded. Ecotype 4 from "Shaheedan Wala Toba" and ecotype 1 from "Lal Suhanra" appeared to be the best thriving ones with respect to leaf area, number of tillers per plant, fresh weight of plant and number of leaves per tiller. Positive correlations among various morphological variables indicate that selected ecotypes may eventually prove highly desirable for enhancing biomass production and restoration of plant cover in saline `dahars` in degraded rangelands of Cholistan.
  Muhammad Naeem , Salah-ud-Din Baber , Altaf-ur-Rehman Rao and M. Yasin Ashraf
  The present vegetal investigations were aimed at the National Park Reserves Chinji (Talagang). The area of the park was surveyed thoroughly and three study sites were selected in the park, keeping in view the following physiogeogrphic factors: Nature of vegetation cover, density, frequency and coverage of plant species, species composition, water regimes, extent of desertification, level of salinity and sodicity, soil texture and structure, soil profile, topography. Following three plant communities in Chinji were recognized on the bases of importance value. S1/Q1 Cynodon - Acacia - Dodonaea S2/Q2 Cynodon - Dodonaea - Acacia S3/Q3 Cynodon - Dodonaea - Eulaliopsis - Cymbopogon The community of Q1, Q2 and Q3 comprised 19, 21 and 19 plant species respectively, out of which 5 in Q1 7 in Q2 and 6 in Q3 got vanished during the second year. New colonizers were Eulaliopsis binata and Asparagus adscendens in Q1 and Eulaliopsis binata in Q3.
  Kalsoom Akhtar , Muhammad Ashraf and Altaf-ur-Rehman Rao
  Seven mungbean genotypes were evaluated for their response to water-deficit stress and for different stress attributes for the selection of productive and stress tolerant genotypes. The results indicated that means productivity (MP) and geometric means productivity (GMP) would be useful selection indices to identify mungbean genotypes that have high seed yield potential across a range of environments. MP would best identify genotypes with high performance in nonstress environments and GMP would best identify genotypes with high performance in stress environments. High and negative correlation coefficients were found between stress susceptibility index (SSI) and seed yield in the driest condition both with Ys (r = -0.96) and Yc (r = -0.82). Stress tolerance index (STI), highly significantly correlated with Ys, Yc, MP and GMP at all stress intestines, may prove to be a useful index of yield potential and stress tolerance across a range of environments. Generally, choice of the most appropriate index will depend on the objective of selection and target areas.
 
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