Browsing Faculty of Natural Sciences by Subject "Drought"
Now showing items 1-11 of 11
-
Assessing the effects of in vitro imposed water stress on pineapple growth in relation to biochemical stress indicators using polynomial regression analysis
(AcademicPres, 2020)Knowing the mechanisms that operate under water stress in commercial crops, particularly those that can affect productivity, such as phenolic or cell wall metabolism, is becoming increasingly important in a scenario of ... -
Common bean as a potential crop for future food security: an overview of past, current and future contributions in genomics, transcriptomics, transgenics and proteomics
(Taylor & Francis Open Access, 2021)Common bean is an important legume crop having high quality protein, micronutrients, vitamins and antioxidants, which makes it a “grain of hope” for poor communities. Hence, a good number of breeding activities have been ... -
Cross-species multiple environmental stress responses: An integrated approach to identify candidate genes for multiple stress tolerance in sorghum (Sorghum bicolor (L.) Moench) and related model species
(Public Library of Science, 2018)BACKGROUND Crop response to the changing climate and unpredictable effects of global warming with adverse conditions such as drought stress has brought concerns about food security to the fore; crop yield loss is a major ... -
Drought and exogenous abscisic acid alter hydrogen peroxide accumulation and diferentially regulate the expression of two maize RD22-like genes
(Nature Research, 2017)Increased biosynthesis of abscisic acid (ABA) occurs in plants in response to water defcit, which is mediated by changes in the levels of reactive oxygen species such as H2O2. Water defcit and ABA induce expression of ... -
Drought and salinity stress alters ROS accumulation, water retention, and osmolyte content in sorghum plants
(Elsevier, 2017)biotic stresses such as drought and salinity are major environmental factors that influence crop productivity worldwide. These adverse conditions induce osmotic stresses in plant cells by decreasing water availability, thus ... -
Green synthesis of iron oxide (hematite) nanoparticles and their influence on sorghum bicolor growth under drought stress
(MDPI, 2023)Drought is a major abiotic stress that confronts plant growth and productivity, thus compromising food security. Plants use physiological and biochemical mechanisms to cope with drought stress, but at the expense of ... -
Indigenous African cereal crops can contribute to mitigation of the impact of climate change on food security
(Arid land institute, 2021)Zea mays L. (maize) is one of the top three cultivated cereals globally, along with wheat and rice. The United States, China, and Brazil are among the largest producers of maize, producing approximately 79% of the world’s ... -
Investigating changes over time of annual rainfall in Zimbabwe
(Copernicus Publications, 2010)There is increasing concern in southern Africa about the possible decline of rainfall as a result of global warming. Some studies concluded that average rainfall in Zimbabwe had declined by 10% or 100 mm during the ... -
Morphological and physiological responses of Calobota sericea plants subjected to water limitation and subsequent rewatering
(Taylor and Francis Group, 2021)Calobota sericea is a native legume of South Africa, confined to the water-limited rangelands, and it has recently been prioritised for additional characterisation regarding its pasture potential. In this study, we examined ... -
Neighbourhood responses to drought in the Western Cape
(Springer, 2021-10)An extreme drought event occurred in the Western Cape when the mean level of water supply dams declined to 28% of capacity in August 2017 (Odendaal 2019). Our survey of 240 households and 71 businesses identified ... -
Review of in-situ and remote sensing-based indices and their applicability for integrated drought monitoring in South Africa
(MDPI, 2023)The devastating socioeconomic impacts of recent droughts have intensified the need for improved drought monitoring in South Africa (SA). This study has shown that not all indices can be universally applicable at all ...