Effect of Drought Stress on Canopy Temperature, Growth and Yield Performance of Cowpea Varieties

Ndiso, James Biriah; Chemining’wa, George N.; Olubayo, Florence; Saha, H. M.

doi:10.9734/ijpss/2016/21844

Cited by 29 publications

(32 citation statements)

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“…The results of this study showed that canopy temperature of strawberry plants increased under salt stress. Previous studies revealed that lower canopy temperature genotypes appear to exhibit better tolerance to drought stress; for example, in water stress conditions, increases in canopy temperature were observed in wheat (Triticum aestivum L. and T. durum L.) [53] and cowpea (Vigna unguiculata L.) varieties [54]. We suggest that for strawberry plants limited water availability under salt stress conditions results in rising canopy temperatures.…”

Section: Discussionmentioning

confidence: 61%

Application of Nano-Silicon Dioxide Improves Salt Stress Tolerance in Strawberry Plants

et al. 2019

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Silicon application can improve productivity outcomes for salt stressed plants. Here, we describe how strawberry plants respond to treatments including various combinations of salt stress and nano-silicon dioxide, and assess whether nano-silicon dioxide improves strawberry plant tolerance to salt stress. Strawberry plants were treated with salt (0, 25 or 50 mM NaCl), and the nano-silicon dioxide treatments were applied to the strawberry plants before (0, 50 and 100 mg L−1) or after (0 and 50 mg L−1) flowering. The salt stress treatments reduced plant biomass, chlorophyll content, and leaf relative water content (RWC) as expected. Relative to control (no NaCl) plants the salt treated plants had 10% lower membrane stability index (MSI), 81% greater proline content, and 54% greater cuticular transpiration; as well as increased canopy temperature and changes in the structure of the epicuticular wax layer. The plants treated with nano-silicon dioxide were better able to maintain epicuticular wax structure, chlorophyll content, and carotenoid content and accumulated less proline relative to plants treated only with salt and no nano-silicon dioxide. Analysis of scanning electron microscopic (SEM) images revealed that the salt treatments resulted in changes in epicuticular wax type and thickness, and that the application of nano-silicon dioxide suppressed the adverse effects of salinity on the epicuticular wax layer. Nano-silicon dioxide treated salt stressed plants had increased irregular (smoother) crystal wax deposits in their epicuticular layer. Together these observations indicate that application of nano-silicon dioxide can limit the adverse anatomical and biochemical changes related to salt stress impacts on strawberry plants and that this is, in part, associated with epicuticular wax deposition.

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Section: Discussionmentioning

confidence: 61%

Application of Nano-Silicon Dioxide Improves Salt Stress Tolerance in Strawberry Plants

et al. 2019

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“…Turgor osmotic potential, leaf water potential, and RWC were reduced at the tillering and jointing growth stages of wheat plants whereas osmotic adjustment increased [35]. In most cases, the crops are severely affected during the reproductive or flowering stages of growth compared to the vegetative stage of growth, which invariably affects the yield, as observed in rice, chickpea, cowpea, and wheat [36][37][38]. The physiological parameters of different crops affected by drought stress are shown in Table 1.…”

Section: Changes In Physiological Parameters Of Drought-stressed Plantsmentioning

confidence: 99%

“…Drought stress at vegetative and flowering phases significantly reduced the shoot dry weight in cowpea varieties by 56.2% and 36.2%. [37] Faba bean (Vicia faba L.)…”

Section: Plant Species Effect Of Drought Stress On Crop Growth and Yimentioning

confidence: 99%

Plant Growth Promoting Rhizobacterial Mitigation of Drought Stress in Crop Plants: Implications for Sustainable Agriculture

2019

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Abiotic stresses arising from climate change negates crop growth and yield, leading to food insecurity. Drought causes oxidative stress on plants, arising from excessive production of reactive oxygen species (ROS) due to inadequate CO2, which disrupts the photosynthetic machinery of plants. The use of conventional methods for the development of drought-tolerant crops is time-consuming, and the full adoption of modern biotechnology for crop enhancement is still regarded with prudence. Plant growth-promoting rhizobacteria (PGPR) could be used as an inexpensive and environmentally friendly approach for enhancing crop growth under environmental stress. The various direct and indirect mechanisms used for plant growth enhancement by PGPR were discussed. Synthesis of 1-aminocyclopropane−1-carboxylate (ACC) deaminase enhances plant nutrient uptake by breaking down plant ACC, thereby preventing ethylene accumulation, and enable plants to tolerate water stress. The exopolysaccharides produced also improves the ability of the soil to withhold water. PGPR enhances osmolyte production, which is effective in reducing the detrimental effects of ROS. Multifaceted PGPRs are potential candidates for biofertilizer production to lessen the detrimental effects of drought stress on crops cultivated in arid regions. This review proffered ways of augmenting their efficacy as bio-inoculants under field conditions and highlighted future prospects for sustainable agricultural productivity.

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“…Various of studies about the response to drought stress on cowpea were conducted by Bastos et al (2011);Punggulani et al (2012); Okon (2013); Uzunova dan Zlatev (2013); Abed (2014); Kutama et al (2014); Ndiso et al (2016). However, the study about some local cowpea from southwest Maluku varieties was focused on exploration and agronomic characterization while the observation in response to drought stress and to do screening on tolerant varieties had not been done yet.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, it can also affect the growth and productivity of cowpea due to drought stress as described by Peijic et al (2013) that drought stress affects cowpea production and it also depends on genotype, intensity and stress periods, stage of plant development. Ndiso et al (2016) also reported that water stress imposed vegetative growth stage and the impact of water stress on growth is dependent on the cowpea variety.…”

Section: Introductionmentioning

confidence: 99%

Physiological responses of some local cowpea from Southwest Maluku (Indonesia) varieties to drought stress

Karuwal¹,

Suharsono

Tjahjoleksono

et al. 2017

Biodiversitas

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Abstract. Karuwal Rl, Suharsono, Tjahjoleksono A, Hanif N. 2017. Physiological responses of some local cowpea from Southwest Maluku (Indonesia) varieties to drought stress. Biodiversitas 18: 1294Biodiversitas 18: -1299. The aim of this study was to analyze the physiological responses of some local cowpea from Southwest Maluku (Indonesia) varieties to drought stress. The physiological responses were analyzed by measuring plant height, number of leaves, relative water content (RWC), and chlorophyll content using Anova and were continued with Duncan test at 5% significance level. Results of this research showed that the varieties and drought stress in the form of watering periods to affect to all variables except plant height. Physiological responses showed that at every ten days watering periods, the crimson varieties gives the highest plant height (33.85 cm), the brown varieties gives the highest number of leaves (30), the dark brown varieties have the highest RWC (88.675%), and the highest content of chlorophyll a (0.5088 mg/L), chlorophyll b (1.595 mg/L), and total chlorophyll (1.5095 mg/L) are found in white varieties. The supply of water at every ten days is the optimum time of drought stress in cowpea. Further research will be needed on the responses of the other variables for screening, selection, then multi-location trials to obtain tolerant local cowpea varieties to drought.

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Effect of Drought Stress on Canopy Temperature, Growth and Yield Performance of Cowpea Varieties

Cited by 29 publications

References 0 publications

Application of Nano-Silicon Dioxide Improves Salt Stress Tolerance in Strawberry Plants

Application of Nano-Silicon Dioxide Improves Salt Stress Tolerance in Strawberry Plants

Plant Growth Promoting Rhizobacterial Mitigation of Drought Stress in Crop Plants: Implications for Sustainable Agriculture

Physiological responses of some local cowpea from Southwest Maluku (Indonesia) varieties to drought stress

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