Muhammad Ajmal Khan

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Suaeda fruticosa Forssk is a leaf succulent obligate halophyte that produces numerous seeds under saline conditions. Seeds are a good source of high quality edible oil and leaves are capable of removing substantial amount of salt from the saline soil besides many other economic usages. Little is known about the biochemical basis of salt tolerance in this(More)
Improvement of crop production is needed to feed the growing world population as the amount and quality of agricultural land decreases and soil salinity increases. This has stimulated research on salt tolerance in plants. Most crops tolerate a limited amount of salt to survive and produce biomass, while halophytes (salt-tolerant plants) have the ability to(More)
Salinity causes oxidative stress in plants by enhancing production of reactive oxygen species, so that an efficient antioxidant system, of which ascorbic acid (AsA) is a key component, is an essential requirement of tolerance. However, antioxidant responses of plants to salinity vary considerably among species. Limonium stocksii is a sub-tropical halophyte(More)
The water balance and hydrochemistry of precipitation components in Acacia tortilis and Chlorophospermum mopane forests in the arid zone of Rajasthan, India, were studied for four years (1993-1996). Rainfall and throughfall were measured for each rainfall event during the monsoon season (June-September) using an automatic raingauge and 96 graduated(More)
The combination of traits that makes a plant successful under saline conditions varies with the type of plant and its interaction with the environmental conditions. Knowledge about the contribution of these traits towards salt resistance in grasses has great potential for improving the salt resistance of conventional crops. We attempted to identify(More)
Seed heteromorphism observed in many halophytes is an adaptive phenomenon toward high salinity. However, the relationship between heteromorphic seed germination and germination-related hormones under salt stress remains elusive. To gain an insight into this relationship, the roles of gibberellins (GAs) and abscisic acid (ABA) in regulating germination of(More)
Thellungiella halophila (salt cress) is a salt tolerant species with high genetic and morphological similarity to model plant Arabidopsis thaliana. The role of growth regulators in imposing seed dormancy and a release from it while responding to environmental signals has been examined. Seeds of salt cress possess a deep dormancy at maturity which decreased(More)
We demonstrate a compact, open-path, quantum cascade-laser-based atmospheric ammonia sensor operating at 9.06 µm for high-sensitivity, high temporal resolution , ground-based measurements. Atmospheric ammonia (NH 3) is a gas-phase precursor to fine particulate matter, with implications for air quality and climate change. Currently, NH 3 sensing challenges(More)