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Articles by Lubna Andleeb
Total Records ( 2 ) for Lubna Andleeb
  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.
  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.
 
 
 
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