Drought tolerance assessment of potato (Solanum tuberosum L.) genotypes at different growth stages, based on morphological and physiological traits

2022 ◽  
Vol 261 ◽  
pp. 107361
Author(s):  
Sizwe Goodman Mthembu ◽  
Lembe Samukelo Magwaza ◽  
Jacob Mashilo ◽  
Asanda Mditshwa ◽  
Alfred Odindo
Keyword(s):  
Solanum Tuberosum ◽  
Drought Tolerance ◽  
Solanum Tuberosum L ◽  
Physiological Traits ◽  
Growth Stages ◽  
Morphological And Physiological Traits ◽  
Different Growth Stages

scholarly journals Changes in Phytochemical Content During Different Growth Stages in Tubers of Five Varieties of Potato (Solanum Tuberosum L.)

2018 ◽  
Vol 6 (1) ◽  
pp. 12-22 ◽  
Author(s):  
Geoffrey Kipkoech Kirui ◽  
Saifuddin Fidahussein Dossaji ◽  
Nelson Onzere Amugune
Keyword(s):  
Solanum Tuberosum ◽  
Phenolic Compounds ◽  
Analytical Methods ◽  
Nutritional Quality ◽  
Solanum Tuberosum L ◽  
Bioactive Metabolites ◽  
Growth Stages ◽  
Potato Varieties ◽  
Safety Limit ◽  
Different Growth Stages

Potato (Solanum tuberosum L.) synthesizes a variety of bioactive metabolites including phenolic compounds and glycoalkaloids that protects against insects and diseases, and may influence its nutritional quality. Phenolics provide valuable health promoting antioxidants, whereas glycoalkaloid concentrations exceeding the upper safety limit of 20 mg/100 g fresh weight (Fwt) are potential neurotoxins. Therefore, efficient selection for tuber nutritional quality is dependent upon safe and reliable analytical methods. The aim of this study was to determine the changes in the concentration of glycoalkaloids and phenolic compounds during different growth stages in tubers of five selected potato varieties grown in Kenya. α-chaconine and α-solanine were separated and identified by HPLC. Total glycoalkaloids (TGA) and phenolics were determined by UV spectrophotometry. Recovery efficiencies for validation of analytical methods ranged from 85.9-93.5%. Significant differences in TGA and phenolic contents were detected among potato varieties. Tuber TGA content ranged from 6.80 to 10.56 mg/100g Fwt in vars. Dutch Robijn and Tigoni, respectively, and were within the upper safety limit. The corresponding values for chlorogenic acid contents in the examined varieties ranged from 46.39 to 58.04 mg/100 g Fwt. Total phenolic concentration in the examined tuber extracts varied ranged from 129.24 to 192.52 mg CGA/g Fwt. Glycoalkaloid and phenolic production were significantly reduced from time of initiation to maturity at 55 and 125 days, respectively, after planting (DAP). These results demonstrate that tuber phytochemicals were strongly influenced by variety and level of maturity. For nutritional safety and quality purposes, harvesting of mature potato tubers after 125 DAP is recommended.

Phytotoxicity of Oxidised and Reduced Nitrogen Aerosols on Potato (Solanum Tuberosum L.) Crop

2017 ◽  
pp. 169-188
Author(s):  
Bhagawan Bharali ◽  
Zafar Ullah ◽  
Bhupendra Haloi ◽  
Jayashree Chutia ◽  
Sonbeer Chack
Keyword(s):  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Solanum Tuberosum L ◽  
Membrane Stability ◽  
Tuber Initiation ◽  
Growth Stages ◽  
Cell Membrane Stability ◽  
Tuber Bulking ◽  
Use Efficiency ◽  
Different Growth Stages

In a field trial (2012), simulated aerosols: NH4Cl (reduced) and NaNO2 (oxidised) @ 10 & 20 kg ha-1y-1 (˜ 100 ppm & ˜ 200 ppm respectively), 1000 cm3m-2 of each along with a control were misted to population of Kufri Jyoti at different growth stages viz., vegetative (10-60 DAS), tuber initiation (60-90 DAS) and tuber bulking >90DAS). The higher dose of aerosols lowered nitrate reductase activity, nitrogen use efficiency, cell membrane stability, tuber yield, but increased photosynthesis, peroxidise activity significantly. The mechanisms of injury in terms of higher peroxidase activity and lower membrane stability of leaf cells have been elucidated. Foliar feeding of nitrogenous pollutant in the form of aerosols to plants at juvenile stage is important in addition to basal use of recommended fertilizers.

scholarly journals Potato Annexin STANN1 Promotes Drought Tolerance and Mitigates Light Stress in Transgenic Solanum tuberosum L. Plants

PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0132683 ◽  
Author(s):  
Michal Szalonek ◽  
Barbara Sierpien ◽  
Wojciech Rymaszewski ◽  
Katarzyna Gieczewska ◽  
Maciej Garstka ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Drought Tolerance ◽  
Solanum Tuberosum L ◽  
Light Stress

Okra growth and drought tolerance when exposed to water regimes at different growth stages

2018 ◽  
Vol 25 (3) ◽  
pp. 226-258 ◽  
Author(s):  
Sifau A. Adejumo ◽  
Okechukwu S. Ezeh ◽  
Luis A.J. Mur
Keyword(s):  
Drought Tolerance ◽  
Growth Stages ◽  
Water Regimes ◽  
Different Growth Stages

Field Screening for Variation of Drought Tolerance in Solanum tuberosum L. by Agronomical, Physiological and Genetic Analysis

2007 ◽  
Vol 50 (1) ◽  
pp. 71-85 ◽  
Author(s):  
Roland Schafleitner ◽  
Raymundo Gutierrez ◽  
Ricardo Espino ◽  
Amelie Gaudin ◽  
José Pérez ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Drought Tolerance ◽  
Genetic Analysis ◽  
Solanum Tuberosum L ◽  
Field Screening

Two potato (Solanum tuberosum) varieties differ in drought tolerance due to differences in root growth at depth

2014 ◽  
Vol 41 (11) ◽  
pp. 1107 ◽  
Author(s):  
Jaime Puértolas ◽  
Carlos Ballester ◽  
E. David Elphinstone ◽  
Ian C. Dodd
Keyword(s):  
Solanum Tuberosum ◽  
Drought Tolerance ◽  
Root Growth ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Shoot Biomass ◽  
Genotypic Differences ◽  
Deep Soil ◽  
Soil Layers ◽  
Cultural Conditions

To test the hypothesis that root growth at depth is a key trait explaining some genotypic differences in drought tolerance in potato (Solanum tuberosum L.), two varieties (Horizon and Maris Piper) differing in drought tolerance were subjected to different irrigation regimes in pots in a glasshouse and in the field under a polytunnel. In the glasshouse, both cultivars showed similar gas exchange, leaf water potential, leaf xylem ABA concentration and shoot biomass independently of whether plants were grown under well watered or water deficit conditions. Under well watered conditions, root growth was three-fold higher in Horizon compared with Maris Piper, 3 weeks after emergence. Water deficit reduced this difference. In the polytunnel, applying 60% or less irrigation volume compared with full irrigation significantly decreased tuber yield in Maris Piper but not in Horizon. This was coincident with the higher root density of Horizon in deep soil layers (>40 cm), where water content was stable. The results suggest that early vigorous root proliferation may be a useful selection trait for maintaining yield of potato under restricted irrigation or rainfall, because it rapidly secures access to water stored in deep soil layers. Although selecting for vigorous root growth may assist phenotyping screening for drought tolerance, these varieties may require particular environmental or cultural conditions to express root vigour, such as sufficiently deep soils or sufficient water shortly after emergence.

scholarly journals ASSOCIATION MAPPING OF MORPHOLOGICAL AND PHYSIOLOGICAL TRAITS OF FLAG LEAF RELATED TO DROUGHT TOLERANCE IN BARLEY

2019 ◽  
Vol 6 (2) ◽  
pp. 7-18
Author(s):  
Mitra Jabbari ◽  
Barat Ali Fakheri ◽  
Reza Aghnoum ◽  
Nafiseh Mahdi Nezhad ◽  
Reza Ataei ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Association Mapping ◽  
Flag Leaf ◽  
Physiological Traits ◽  
Morphological And Physiological Traits
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