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Articles by A.R. Dar
Total Records ( 5 ) for A.R. Dar
  Lubna Andleeb , A.H. Munshi and A.R. Dar
  In Kashmir, Salix is cultivated on large scale. There are diverse cultivars of Salix found in Kashmir Valley but they are not well demarked due to similarities in certain morphological characteristics. Salix species is an important source of aspirin and salicylic acid. It has tremendous economic importance. Its wood is used for manufacturing different types of furniture, bats etc. Therefore, in the present study a fingerprinting technique has been used to differentiate cultivars of Salix found in Kashmir Valley. Among Salix cultivars, genetic diversity has been ascertained in the S. viminalis using Amplified Fragment Length Polymorphism (AFLP) technique. AFLP analysis of different Salix viminalis cultivars which were difficult to identify morphologically revealed that they are different cultivars of the same species. AFLP markers were able to reveal that the four Salix cultivars taken for study were highly diverse at genetic level. The 4 primers used generated a total of 240 bands of which 197 (82%) were polymorphic. The broad genetic base can be attributed to their out-crossing nature. Our study may be useful in identifying diverse genetic stock of S. viminalis, which may be conserved on priority basis.
  Anzar A. Khuroo , Akhtar H. Malik , A.R. Dar , G.H. Dar and Z.S. Khan
  The documentation of biodiversity and its traditional use(s) by the ethnic communities have assumed priority due to the rampant loss of biodiversity, the looming threats of biopiracy and the increasing patent wars on bio-resources. In view of this, the present paper describes in detail the ethno-veterinary medicinal uses of some angiosperm plant species by the Gujar tribe of the Kashmir Himalaya; with the sole objective of documentation of this secret treasure-trove of valuable ethno-botanic knowledge. In the present investigation, each plant species has been provided with the scientific name, local name, growth form, altitudinal range and present status of occurrence; followed by part(s) used, mode of preparation, method of use and the dosage.
  A.R. Dar , Zafar Reshi , G.H. Dar and Lubna Andleeb
  Five populations of Aquilegia nivalis were regularly surveyed during 2004-2006 for the study of phenological events, population size, recruitment and mortality of its individuals besides reproductive ecology. The study revealed that its perennating organs start sprouting in the first week of June, followed by flowering of individuals in the 3rd week of June and seed formation in the last week of September. Due to the herkogamous and dichogamous nature of its flowers, A. nivalis is an out-breeder. The number of individuals in its populations ranges from 2.87 ind./m2±0.12 to 10.28 ind./m2±0.57. Due to small size of its populations, very few (0.37 ind/m2±0.15 to 2.86 ind./m2±0.14) individuals reach the reproductive stage. Furthermore, 10.66%±4.19 to 18.72%±10.31 of individuals are damaged by herbivores in various populations. These factors limit the availability of compatible mates in the populations and contribute to low-insect visitation frequency (0.03±0.00 to 0.14±0.02; n=18), low pollen viability (46.50±1.93; n=3) and consequentially very low fruit (0%±0 to 70%±15.28) and seed set (0%±0 to 60.8%±15.85). All these factors, in conjunction with hostile habitat conditions and enhanced anthropogenic pressures, contribute to the present threat status of this endemic species.
  A.R. Dar , Zafar Reshi and G.H. Dar
  Seven spatially separate populations were studied in an attempt to identify and understand the bottlenecks that are responsible for the restricted occurrence and limited size of the existing populations of an endemic species, Meconopsis latifolia, in the Kashmir Himalaya, which is at the brink of extinction. Of the seven populations, only a few individuals in three populations flowered and produced seeds. Vegetative individuals predominated the populations. This skewed distribution of vegetative and reproductive individuals within populations was largely due to herbivory by rodents and cattle that prevented flowering. The surveyed populations showed variability in plant height (38.82±4.39 to 95.37±6.73 cm, p = 0.0001), rhizome length (11.8±0.66 to 27.56±3.74 cm, p = 0.007), number and dimensions of basal and upper leaves, the number of reproductive individuals (0.15 to 2.88 ind. m-2, p = 0.0001) and flower number (16.6±0.67 to 29.12±2.708, p = 0.0001). Breeding experiments confirmed the out-breeding nature of the species and only one insect species foraged and pollinated its flowers. The reproductive output, though relatively more in high elevational populations, was severely constrained by herbivory and pre-dispersal seed predation. Reduced population size, herbivory, reduced number of reproductive individuals, pre-dispersal seed predation and highly-specialized habitat requirements are the major restrictive factors responsible for the present critically endangered threatened status of this species.
  A.R. Dar and G.H. Dar
  The wealth of vegetation that adorns the earth shows a vast array of floristic diversity ranging from microscopic algae to gigantic Eucalyptus. Among these, gymnosperms, particularly conifers, constitute an important floristic component of evergreen forests by virtue of their multidimensional ecological and socio-economic values. In view of their immense importance, a thorough study has been undertaken to explore the conifers of Kashmir. During the present investigation, a total of 16 species, spread over 9 genera in 3 families, were recorded. Among these, the family Pinaceae with 7 species in 4 genera is the most dominant, while Taxodiaceae with 2 species in 2 genera is the least represented. Out of the total taxa 7 species, belonging to 5 genera, are exotic and exist in cultivation only.
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