Response of two potato clones (S. tuberosum L.) to contrasting temperature regimes in the field

Sarquís, Jorge I.; González, Héctor Zermeño; Bernal-Lugo, I.

doi:10.1007/bf02855207

Cited by 18 publications

(12 citation statements)

References 22 publications

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“…Reduced g s may significantly reduce the A n rate, but apparently especially high-WUE clones were able to counteract this by reducing c i in line with results reported by (Liu et al 2005). However, it was observed that under the influence of combined high values of leaf temperatures (above 30°C), PAR (1200 lmol m À2 s À1 ) and VPD (3.0-3.5 kPa), g s was increased, confirming findings of (Hammes and Jager 1990) and (Sarqu ıs et al 1996). This rather unusual reaction to increasing VPD seems to occur only at high VPD, as (Ku et al 1977) observed reductions in stomatal conductance by increasing temperature to 35°C but maintaining lower VPD in the range of 1.0-2.5 kPa.…”

Section: Discussionsupporting

confidence: 66%

“…Such stomatal reaction as observed here may signify that the regulation of transpiration is compromised but certainly contribute to leaf-coolingunder high temperatures/VPD conditions, where photosynthesis and translocation are known to be suboptimal and adversely affect potato growth in the field (e.g. (Sarqu ıs et al 1996, Timlin et al 2006).…”

Section: Discussionmentioning

confidence: 77%

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Contrasting Water‐Use Efficiency (WUE) Responses of a Potato Mapping Population and Capability of Modified Ball‐Berry Model to Predict Stomatal Conductance and WUE Measured at Different Environmental Conditions

Kaminski

Kørup

Kristensen

et al. 2014

J Agronomy Crop Science

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Potatoes (Solanum tuberosum L.) are drought-sensitive and more efficient water use, while maintaining high yields is required. Here, water-use efficiency (WUE) of a mapping population comprising 144 clones from a cross between 90-HAF-01 (Solanum tuberosum 1 ) and 90-HAG-15 (S. tuberosum 2 9 S. sparsipilum) was measured on well-watered plants under controlled-environment conditions combining three levels of each of the factors: [CO 2 ], temperature, light, and relative humidity in growth chambers. The clones were grouped according to their photosynthetic WUE (pWUE) and whole-plant WUE (wpWUE) during experiments in 2010. Two offspring groups according to pWUE and wpWUE were identified on the basis of experiments conducted in 2010, which in experiments in 2011 again showed significant differences in pWUE (46 %, P < 0.001) and wpWUE (34 %, P < 0.001). The high-WUE group had a higher net photosynthesis rate (34 %) and dry matter accumulation (55 %, P < 0.001) rather than leaf-level transpiration rate (À4 %, no significant difference) or whole-plant water use (16 %). The pWUE correlated negatively to the ratio between leaf-internal and leaf-external [CO 2 ] (R 2 = À0.86 in 2010 and R 2 = À0.83 in 2011, P < 0.001). The leaf chlorophyll content was lower in the high-WUE group indicating that the higher net photosynthesis rate was not due to higher leaf-N status. Less negative value of carbon isotope discrimination (d 13 C) in the high-WUE group was only found in 2011. A modified Ball-Berry model was fitted to measured stomatal conductance (g s ) under the systematically varied environmental conditions to identify parameter differences between the two groups, which could explain their contrasting WUE. Compared to the low-WUE group, the high-WUE group showed consistently lower values of the parameter m, which is inversely related to WUE. Differences related specifically to the dependence of g s on humidity and net photosynthesis rate were only found in 2010. The lower ratio between leafinternal and leaf-external [CO 2 ] and higher WUE of the high-WUE group was consistent over a wide range of air vapour pressure deficits from 0.5 to 3.5 kPa. The mapping population was normally distributed with respect to WUE suggesting a multigenic nature of this trait. The WUE groups identified can be further employed for quantitative trait loci (QTL) analysis by use of gene expression studies or genome resequencing. The differences in population WUE indicate a genetic potential for improvement of this trait.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 77%

Contrasting Water‐Use Efficiency (WUE) Responses of a Potato Mapping Population and Capability of Modified Ball‐Berry Model to Predict Stomatal Conductance and WUE Measured at Different Environmental Conditions

Kaminski

Kørup

Kristensen

et al. 2014

J Agronomy Crop Science

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“…Low solar irradiance is a yield constraint at 30 to 40 o N in winter when potatoes are grown to escape the summer heat (HAVERKORT, 1990). SARQUIS et al (1996) stated that the magnitude of the effect of elevated temperatures on potato growth and final yield is determined by an intricate interaction between soil temperature, air temperature, solar radiation flux density, and photoperiod duration. Their data extended previous observations of reduction in photosynthesis rate under elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Potato potential yield based on climatic elements and cultivar characteristics

Pereira¹,

Nova

Ramos³

et al. 2008

Bragantia

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There is currently a great deal of interest in estimating crop productivity as a function of climatic elements by means of different crop weather models. An agrometeorological model is presented based on carbon dioxide assimilation maximum rates for C 3 plants, fraction of photosynthetically active radiation, air temperature, photoperiod duration, and crop parameters under tropical climate conditions. Such crop parameters include leaf area and harvest indexes, dry matter content of potato tubers, and crop cycles to estimate potato potential yields. Field data from observed productivity obtained with the cultivar Itararé (IAC-5986), grown under adequate soil water supply conditions at four different regions in the State of São Paulo (Itararé, Piracicaba, Tatuí, and São Manuel), Brazil, were used to test the model. The results revealed an excellent performance of the agrometeorological model in study, with an underestimation of irrigated potato productivity less than 10%.Key words: modelling, Solanum tuberosum L., climatic elements, crop indexes, yield. PRODUÇÃO POTENCIAL DA BATATEIRA EM FUNÇÃO DE PARÂMETROS CLIMÁTICOS E FITOTÉCNICOS RESUMOHá um grande interesse em estudos de estimativa da produtividade de culturas agronômicas em função de elementos climáticos através do uso de diversos modelos agrometeorológicos. Neste estudo, empregou-se um modelo agrometeorológico com base em taxas máximas de assimilação de dióxido de carbono para plantas de metabolismo C 3 , radiação fotossinteticamente ativa, temperatura do ar, comprimento do dia e parâmetros fitotécnicos, como índice de área foliar, índice de colheita, conteúdo de matéria seca dos tubérculos e duração do ciclo fenológico da cultura para estimar a produtividade potencial da batateira. Dados de campo obtidos a partir de produtividades observadas com a cultivar Itararé (IAC-5986), sob condições de suprimento adequado de água no solo para quatro localidades distintas do Estado de São Paulo (Itararé, Piracicaba, Tatuí e São Manuel), Brasil, foram utilizados para testar o modelo. Os resultados revelaram um excelente desempenho do modelo climático em estudo, com subestimativas de rendimento potencial inferiores a 10%.Palavras-chave: modelagem, Solanum tuberosum L., elementos de clima, índices culturais, produção. A.B. Pereira et al.

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“…In other plant systems, it has been shown that photosynthesis limitation under heat is conferred by a mixture of ribulose bisphosphate carboxylase activity, electron transport, and pyrophosphate regeneration effects (Sage and Kubien 2007). In potato under heat stress, both increase and decrease of photosynthetic rate was observed (Lafta and Lorenzen 1995;Timlin et al 2006), but increased respiration rate appears to have a greater effect on net carbon accumulation under heat than drop of photosynthetic rate (Sarquis et al 1996). More moderate increases of respiration rates have been recognized as a heat-tolerance trait in Solanum chacoense and Solanum acaule (Wivutvongvana 1979).…”

Section: Potato Responses To Climate Change Effects-heat Drought Anmentioning

confidence: 99%

Adaptation of the Potato Crop to Changing Climates

Schafleitner

Ramírez

Jarvis

et al. 2011

Crop Adaptation to Climate Change

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Response of two potato clones (S. tuberosum L.) to contrasting temperature regimes in the field

Cited by 18 publications

References 22 publications

Contrasting Water‐Use Efficiency (WUE) Responses of a Potato Mapping Population and Capability of Modified Ball‐Berry Model to Predict Stomatal Conductance and WUE Measured at Different Environmental Conditions

Contrasting Water‐Use Efficiency (WUE) Responses of a Potato Mapping Population and Capability of Modified Ball‐Berry Model to Predict Stomatal Conductance and WUE Measured at Different Environmental Conditions

Potato potential yield based on climatic elements and cultivar characteristics

Adaptation of the Potato Crop to Changing Climates

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