Effect of water deficit on photosynthetic oxygen exchange measured using 18O2 and mass spectrometry in Solanum tuberosum L. leaf discs

Planta ◽  
1995 ◽  
Vol 195 (4) ◽  
Author(s):  
Christophe Tourneux ◽  
Gilles Peltier
Keyword(s):  
Mass Spectrometry ◽  
Solanum Tuberosum ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Oxygen Exchange ◽  
Leaf Discs ◽  
Effect Of Water ◽  
Photosynthetic Oxygen

Effect of water stress on tuber quality (dumbel, pointed, cracks and total deformed tubers) in potato (Solanum tuberosum L.)

2021 ◽  
Vol 14 (1) ◽  
pp. 84-88
Author(s):  
Subhash Kumar ◽  
Devendra Kumar ◽  
B. Singh ◽  
Yash Pal Singh ◽  
Pushpendra Singh ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Water Stress ◽  
Solanum Tuberosum L ◽  
Tuber Quality ◽  
Effect Of Water

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.

Growth, quality, and yield characteristics of transgenic potato (Solanum tuberosum L.) overexpressing StMyb1R-1 under water deficit

2012 ◽  
Vol 39 (3) ◽  
pp. 154-162 ◽  
Author(s):  
Ju-Sung Im ◽  
Kwang-Soo Cho ◽  
Ji-Hong Cho ◽  
Young-Eun Park ◽  
Chung-Gi Cheun ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Transgenic Potato ◽  
Growth Quality

Responses of Solanum tuberosum L. to Water Deficit by Matric or Osmotic Induction

2021 ◽  
Author(s):  
Athos Odin Severo Dorneles ◽  
Aline Soares Pereira ◽  
Talis Basilio da Silva ◽  
Marisa Taniguchi ◽  
Gabriel Streck Bortolin ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Water Deficit ◽  
Solanum Tuberosum L

Effect of Water Deficit on Translocation of Carbohydrate in Solanum tuberosum

1974 ◽  
Vol 1 (4) ◽  
pp. 529 ◽  
Author(s):  
R Munns ◽  
CJ Pearson
Keyword(s):  
Solanum Tuberosum ◽  
Water Deficit ◽  
Net Photosynthesis ◽  
Leaf Water ◽  
Tuber Growth ◽  
Direct Effects ◽  
Effect Of Water ◽  
Water Potentials

The effect of drought on the fixation and translocation of labelled carbon in the potato (S. tuberosum) was examined. Low leaf water potentials resulted in a decrease in translocation which was proportional to the decline in net photosynthesis, irrespective of whether tubers were absent or present. The ratio of 14C entering polysaccharides to that in ethanol-soluble compounds markedly decreased in droughted leaves. These data suggest that the decrease in growth of tubers under conditions of water deficit can be ascribed to direct effects on tuber growth and photosynthesis but not to interference with vein loading or velocity of transport of photosynthate.

scholarly journals Effect of water deficit on some physiological and biochemical responses of the yellow diploid potato (Solanum tuberosum L. Group Phureja)

2020 ◽  
Vol 38 (1) ◽  
pp. 36-44
Author(s):  
Wilmar Ariza ◽  
Luis Ernesto Rodríguez ◽  
Darwin Moreno-Echeverry ◽  
Carlos Arturo Guerrero ◽  
Liz Patricia Moreno
Keyword(s):  
Solanum Tuberosum ◽  
Stomatal Conductance ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Tuber Initiation ◽  
Diploid Potato ◽  
Biochemical Responses ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Physiological And Biochemical

Water availability is one of the main limitations of potato yields due to the high sensitivity of this crop to water deficit. The objective of this study was to determine the effect of water deficit on some physiological and biochemical responses in yellow diploid potato plants (Solanum tuberosum L. Group Phureja) of the cultivars Criolla Colombia, Criolla Dorada and Criolla Ocarina. Plants at tuber initiation were subjected to two treatments: continuous irrigation and water deficit imposed by withholding water at tuber initiation for 17 d. The results showed that plants under water deficit increased chlorophyll concentration, malondialdehyde and proline content. However, these plants showed a decrease in stomatal conductance, leafarea, total dry mass and exhibited a higher root/shoot ratio in all potato cultivars. In addition, all the cultivars also showed a decrease in yield, which was associated with sensitivity to water stress. Although the high content of proline and high root/shoot ratio may be associated with tolerance to water deficit, this association was not observed in these cultivars, probably due to the high reduction of stomatal conductance, which limited the production of photoassimilates, plant growth, and,therefore, the yield.

scholarly journals Growth and phenology of three Andean potato varieties (Solanum tuberosum L.) under water stress

2016 ◽  
Vol 34 (2) ◽  
pp. 141-154 ◽  
Author(s):  
Loyla Rodríguez P. ◽  
Danny Sanjuanelo C. ◽  
Carlos Eduardo Ñústez L. ◽  
Liz Patricia Moreno-Fonseca
Keyword(s):  
Solanum Tuberosum ◽  
Water Deficit ◽  
Solanum Tuberosum L ◽  
Stem Length ◽  
Water Deficit Stress ◽  
Potential Yield ◽  
Drought Period ◽  
Lateral Shoots ◽  
Negative Effect ◽  
Number Of Leaves

The water-deficit stress has a negative effect on the growth and development of plants, reducing the yield of crops. This study evaluated the effect of a water deficit on the growth and phenology of potato (Solanum tuberosum L.) varieties Diacol Capiro, Pastusa Suprema and Esmeralda. Plants that were starting tuberization were subjected to a water deficit by suspension of irrigation until reaching a foliar water potential of -2.0 MPa; later the plants were re-irrigated and recovered. The water deficit decreased the flowering time in 'Diacol Capiro', the development of leaves and maturation of fruits in 'Esmeralda' and the development of leaves and formation of lateral shoots in 'Pastusa Suprema'. In the three varieties, the water deficit did not induce a significant reduction in the stem length, the number of leaves per stem and per site or the number of main stems per site. The plants demonstrated responses related to escape and evasion mechanisms during the water deficit through the adjustment of the metabolism in order to reduce the duration of the phenological stages. The duration of the biological cycle for the three varieties was 148 days, with a requirement of 1,850 GDD. There were no differences in the potential yield, probably due to the short duration of the stress period. The three varieties demonstrated plasticity when modifying the phenology in response to the drought period.

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