MAINTENANCE OF TURGOR IN RESPONSE TO DROUGHT IN SCHIMA WALLICHII AND QUERCUS SEMECARPIFOLIA AT PHULCHOWKI HILL, KATHMANDU, NEPAL
Journal Title: Journal of Biological and Scientific Opinion - Year 2013, Vol 1, Issue 3
Abstract
In the central Himalaya, plants are subjected to a prolonged dry period, thus developing moisture stress. Maintenance of turgor, tissue water relations and response to drought were studied at Phulchowki Hill, Kathmandu, Nepal by pressure-volume curve analysis in two Himalayan tree species (Schima wallichii at 1400 m elevation, and Quercus semecarpifolia at 2130 m). Variations were found for turgor maintenance in these two species. Both osmotic potential at zero turgor (sz) and osmotic potential at full turgor (sf) declined in dry months and decline was greater in the summer months of 1999 when pre monsoon rain was negligible. Q. semecarpifolia showed high osmotic adjustment at sz, –2.45 MPa than S. wallichii (̶ 1.24 MPa). Similarly osmotic adjustment at sf was –1.89 MPa in Q. semecarpifolia, and –1.07 MPa in S. wallichii. Pressure potential at full turgor (pf) was also high in Q. semecarpifolia (2.18 MPa) in the dry month. Comparatively, S. wallichii showed elastic adjustment with high elasticity of cell walls while Q. semecarpifolia had rigid cell walls. Q. semecarpifolia lost turgor at 76 ̶ 95 % relative water content while S. wallichii at 66 – 89 %. Among these two species S. wallichii maintained turgor by both elastic and osmotic adjustments while Q. semecarpifolia showed osmotic adjustment for the maintenance of turgor during the dry months and showed high drought tolerance.
Authors and Affiliations
Kanta , Poudyal
Keywords
Related Articles
- EP ID EP87853
- DOI 10.7897/2321-6328.01302
- Views 156
- Downloads 0
IMPACT OF DRYING CORIANDER HERB ON ANTIOXIDANT ACTIVITY AND MINERAL CONTENT
The present study investigated the impact of drying on quality, mineral content and antioxidant activity of coriander herb after four drying treatments. The coriander herb was subjected to different drying methods viz.,...
GINGIVAL ENLARGEMENT: AN ISSUE OF PINK TISSUE: CASE SERIES
Increase in size of gingiva is a common feature of gingival disease. Accepted current terminology for this condition is gingival enlargement and gingival overgrowth. Gingival enlargement may result from chronic or acute...
ACNE VULGARIS IN PERSPECTIVE OF UNANI LITERATURE: A REVIEW
Acne vulgaris is a chronic condition affecting more than 85% of adolescents and young adults. It is one of the most common diseases affecting humanity and its impact on quality of life (QoL) is important. The interaction...
ANCIENT AND MODERN REVIEW OF NUTRITIONAL VALUE AND THERAPEUTICAL BENEFITS OF MUDGA (GREEN-GRAM)
According to Caraka Samhita, the varieties of pulses as Mudga (green gram) and Masha (black-gram) have been described in Samidhanya varga and are called Vaidala (dicotyledons). Mudga is the best as soup, is very easily d...
COMPARISON OF MICRO VASCULAR DECOMPRESSION AND PERIPHERAL NEURECTOMY FOR TRIGEMINAL NEURALGIA: A PROSPECTIVE STUDY
Trigeminal neuralgia is a debilitating condition which is characterized by bouts of electric shock-like pain that most commonly involves the second and third division of the trigeminal nerve. This prospective study is do...