Assessment of drought stress tolerance in root and tuber crops

Abstract

Plant growth and productivity is adversely affected by environmental abiotic and biotic stresses. Drought is one of abiotic stresses that cause serious damage to plants. Therefore, understanding the extent of drought stress and assessing the mechanisms of drought tolerance in plants is very crucial to devise different coping mechanisms with the stresses. Brief discussions have been given on some of the terminologies such as drought tolerance vs. resistance; potential yield vs. yield potential, and water use efficiency. Mechanisms of adaptation to drought stress, inheritance of drought tolerance and the contribution of biotechnology to develop methods of coping up with the problems have been discussed. Finally, methods of screening for drought tolerance have been outlined. The integration of both agricultural practices and conventional and contemporary breeding strategies are necessary in developing crop varieties that are tolerant to abiotic stresses including drought.

The Role of Protein-Rich Extracts from Chondrus crispus as Biostimulant and in Enhancing Tolerance to Drought Stress in Tomato Plants

“…Recently, the agricultural sector is facing multiple simultaneous challenges, by rising the productivity to feed the growing global demand and coping with the climate change which is disrupting weather patterns [ 1 ]. Hotter temperatures and changing rainfall patterns lead to an altered water supply, thus generating plant drought stress which has recently become a major constraint to agriculture [ 2 ]. Unfortunately, part of the conventional agriculture still relies on agrochemicals (e.g., synthetic fertilizers and pesticides) but the use of more sustainable methods in the agriculture production systems is needed [ 3 ].…”

Effects of Drought Stress on Photosynthetic and Physiological Parameters of Tomato

“…Crop losses caused by drought are the highest among losses caused by all abiotic stresses (Placide et al, 2014). Drought can influence water metabolism in plants and cause significant changes in plant morphology, physiology, and biochemistry (Torres-Ruiz et al, 2015).…”

Prope legitimate rootstocks determine the selection criteria for drought-tolerant cocoa

“…The root weight character was an observed variable that indicated the root growth. One of several approaches to assess plant adaptation was the evaluation of the plant ability to maximize the rooting system under lack of water condition (Atayase et al 2013; Placide et al 2014;Setyawan et al 2018). 16.01 Note: *significantly different at α 5%, ** significantly different at α 1%, tn not significantly different, EN: experimental number, CV: coefficient of variance, PSS: the percentage of survived seedling, SD: stem diameter, PH: plant height, NL: the number of leaves, LA: the leaf area, FWL: the fresh weight of leaf, DWL: the dry weight of leaf, FWS: the fresh weight of stem, DWS: the dry weight of stem, FWR: the fresh weight of root, DWR: the dry weight of root, RA: the root area, RL: the root length, RV: the root volume, FWC: the fresh weight of plant canopy, DWC: the dry weight of plant canopy Physiological and biochemical characters of prope legitimate cocoa rootstocks Drought stress-induced various plant responses in terms of morphological, physiological, and biochemical characters (Borem et al 2012).…”