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Morphological, physiological, biochemical and molecular facet of drought stress in horticultural Crops

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Title Morphological, physiological, biochemical and molecular facet of drought stress in horticultural Crops
Not Available
 
Creator Kumar R., Berwal M.K. and Saroj P.L.
 
Subject Drought stress, morphological modifications, stomatal conductance, osmolytes
 
Description Not Available
Water stress disrupts horticultural crop growth, development and finally results
in low productivity particularly in arid and semi arid parts of the world. Plants
require certain physical, chemical and biological factors for their growth and
development. Any deviation from these factors may cause aberrant metabolic
changes and plant experience a tension known as stress. Water stresses trigger a
wide variety of plant responses, ranging from altered gene expression and cellular
metabolism to changes in plant growth, leaf morphology and movement and root
development and finally productivity. Drought stress modifies photosynthetic rate,
relative water content, leaf water potential, and stomatal conductance. Finally, it
destabilizes membrane structure and permeability, protein structure and function,
leading to cell death. Drought tolerant plants possess various mechanisms like
reduction in water loss by reducing stomatal conductance or morphological
modification, improving water uptake by developing efficient root systems and
accumulation of osmolytes. Management practices employed for drought stress
management in horticultural crops include use of drought tolerant crop varieties,
use of tolerant root stocks, canopy management, wind breaks, regulated deficit
irrigation and partial root zone drying, uses of anti-transpirants etc. The varieties
selected should have deep root system (bael, ber), leaf shedding (ber, lasoda,
pomegranate), thorns on stem (ker, karonda, ber), stomata at lower side (custard
apple), wax coating (ber), thin foliage and leaf orientation (aonla), hair on leaf and
sunken stomata (fig, phalsa, ber and lasoda). This paper elaborates physiological,
biochemical and molecular mechanism of drought tolerance along with drought
stress management in horticultural crops.
Not Available
 
Date 2020-01-13T04:41:40Z
2020-01-13T04:41:40Z
2019-10-01
 
Type Journal
 
Identifier Kumar R., Berwal M.K. and Saroj P.L. (2019). Morphological, physiological, biochemical and molecular facet of drought stress in horticultural Crops. International Journal of Bio-resource and Stress Management, 10(5):545-560.
Online ISSN 0976-4038
http://krishi.icar.gov.in/jspui/handle/123456789/29684
 
Language English
 
Relation DOI: HTTPS://DOI.ORG/10.23910/IJBSM/2019.10.5.2031;
 
Publisher The Society for Bio-resource and Stress Management