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Gupta, Anil Kumar
- Zinc as an Important Factor Determining Resistance against Helicoverpa armigera Herbivory in Pigeon Pea (Cajanus cajan L.)
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PDF Views:81
Authors
Affiliations
1 Department of Biochemistry, Punjab Agricultural University, Ludhiana 141 004, IN
2 Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141 004, IN
1 Department of Biochemistry, Punjab Agricultural University, Ludhiana 141 004, IN
2 Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141 004, IN
Source
Current Science, Vol 107, No 11 (2014), Pagination: 1871-1875Abstract
The potential of enzyme inhibitors against infestation of insects serves as attractive strategy for the management of devastating pests. In an effort to identify some effective and eco-friendly inhibitors of a damaging pest, Helicoverpa armigera, iron and zinc were found to be potent inhibitors of H. armigera α-amylase, which is an important digestive enzyme required for its survival. This observation motivated us to determine the status of iron and zinc in different pigeon pea genotypes in response to H. armigera herbivory. In general, there was significant decline in zinc content in developing seeds and pod wall after herbivory. However, zinc content was significantly higher in moderately resistant genotypes than moderately susceptible genotypes in infested developing seeds. Significant accumulation of iron was also observed in developing seeds of moderately resistant and intermediate genotypes after the pod borer attack. Higher content of zinc in pod wall of moderately resistant genotypes could determine their resistibility status against H. armigera herbivory.Keywords
Helicoverpa armigera, Iron, Pigeon Pea, Zinc.Full Text
- Mass Balance Estimation Using Geodetic Method for Glaciers in Baspa Basin, Western Himalaya
Abstract Views :230 |
PDF Views:83
Authors
Affiliations
1 Cryosphere Science Division, ESSO-National Centre for Antarctic and Ocean Research, Goa 403 804, IN
2 Divecha Centre for Climate Change, CAOS, Indian Institute of Science, Bengaluru 560 012, IN
3 Department of Civil Engineering, Dr Ambedkar Institute of Technology, Visvesvaraya Technological University-RC, Bengaluru 560 056, IN
1 Cryosphere Science Division, ESSO-National Centre for Antarctic and Ocean Research, Goa 403 804, IN
2 Divecha Centre for Climate Change, CAOS, Indian Institute of Science, Bengaluru 560 012, IN
3 Department of Civil Engineering, Dr Ambedkar Institute of Technology, Visvesvaraya Technological University-RC, Bengaluru 560 056, IN
Source
Current Science, Vol 113, No 03 (2017), Pagination: 486-492Abstract
Himalayan glaciers, which contribute to water security for almost 1.3 billion people in Asia, are now under threat due to climate change. Assessment of glacier mass balance changes is crucial to determine the implications of climate change, but in situ measurements are limited due to rugged terrain and harsh climate of the Himalaya. Remote sensing-based geodetic method is therefore important for studying the evolution of Himalayan glaciers at a large scale. In this study, the mass balance of glaciers located in Baspa basin (Western Himalaya) is estimated for a period of 11 years between 2000 and 2011, using geodetic method. Out of 89 glaciers in the basin, 42 glaciers (greater than 1 km2) covering an area of ~72% (215 km2) of the total glaciated area were selected for the study. A mean thinning of ~50 ± 11 m and mean accumulation of ~35 ± 11 m was observed during the study period, with the cumulative mass balance varying between -36.9 ± 1.98 and 6.47 ± 1.98 m.w.e. A mean annual mass loss of -1.09 ± 0.32 m.w.e.a-1 was observed for the entire basin, suggesting that the glaciers in Baspa basin are losing mass at higher rate compared to the glaciers in central and eastern Himalayas. This study demonstrates the utility of geodetic method to estimate mass balance of glaciers at basin scale, which will be useful to assess future changes in glacial extent and stream run-off.Keywords
Baspa Basin, Geodetic Method, Mass Balance, Western Himalaya.Full Text
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