Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions

Henrik Bak Topbjerg; Kacper Piotr Kaminski; Bo Markussen; Kirsten Kørup Sørensen; Kåre Lehmann Nielsen; Hanne Grethe Kirk; Mathias Neumann Andersen; Fulai Liu

doi:10.1016/j.scienta.2014.08.006

Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions

Henrik Bak Topbjerg, Kacper Piotr Kaminski, Bo Markussen, Kirsten Kørup Sørensen, Kåre Lehmann Nielsen, Hanne Grethe Kirk, Mathias Neumann Andersen, Fulai Liu^*

^*Corresponding author for this work

5 Citations (Scopus)

Abstract

Optimizing crops water use is essential for ensuring food production under future climate scenarios. Therefore, new cultivars that are capable of maintaining production under limited water resource are needed. This study screened for clonal differences in intrinsic water use efficiency (WUE_i) within a dihaploid potato (Solanum tuberosum L.) mapping population under well-watered (WW) and drought-stress (DS) conditions. The factorial dependency of WUE_i on several plant bio-physiological traits was analyzed, and clonal difference of WUE_i was compared. Significant differences in WUE_i were found among the clones within the population. Under WW the two clones showing the highest WUE_i were significantly different from the two lowest WUE_i performing clones. This could only be seen as a trend under DS. Under WW, WUE_i differences were closely associated to net photosynthetic rate (A_n) and nitrogen isotope composition (δ¹⁵N) in the leaf biomass, but did not relate to stomatal conductance (g_s) and carbon isotope composition (δ¹³C) in the leaf biomass. A_n was found to correlate significantly with leaf nitrogen concentration ([N]_leaf) and chlorophyll content index (CCI) under WW. Leaf abscisic acid concentration did not correspond to the changes in g_s, indicating that other factors might have been involved in controlling g_s among the different clones. Collectively, the clonal differences in WUE_i were attributed mainly to the variation in A_n, which in turn was influenced by plant N metabolism. Clones with high WUE_i could be potentially used as material in future breeding programs. Furthermore CCI seemed to be a reliable tool in estimating the clonal A_n and thereby WUE_i.

Original language	English
Journal	Scientia Horticulturae
Volume	178
Pages (from-to)	61-69
Number of pages	9
ISSN	0304-4238
DOIs	https://doi.org/10.1016/j.scienta.2014.08.006
Publication status	Published - 2014

Keywords

Intrinsic water use efficiency
Mapping population
Nitrogen
Nitrogen isotopes
Potato
Stable carbon

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.scienta.2014.08.006

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Topbjerg, H. B., Kaminski, K. P., Markussen, B., Sørensen, K. K., Nielsen, K. L., Kirk, H. G., Andersen, M. N., & Liu, F. (2014). Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions. Scientia Horticulturae, 178, 61-69. https://doi.org/10.1016/j.scienta.2014.08.006

Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions. / Topbjerg, Henrik Bak; Kaminski, Kacper Piotr; Markussen, Bo et al.

In: Scientia Horticulturae, Vol. 178, 2014, p. 61-69.

Research output: Contribution to journal › Journal article › Research › peer-review

Topbjerg, HB, Kaminski, KP, Markussen, B, Sørensen, KK, Nielsen, KL, Kirk, HG, Andersen, MN & Liu, F 2014, 'Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions', Scientia Horticulturae, vol. 178, pp. 61-69. https://doi.org/10.1016/j.scienta.2014.08.006

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title = "Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions",

abstract = "Optimizing crops water use is essential for ensuring food production under future climate scenarios. Therefore, new cultivars that are capable of maintaining production under limited water resource are needed. This study screened for clonal differences in intrinsic water use efficiency (WUEi) within a dihaploid potato (Solanum tuberosum L.) mapping population under well-watered (WW) and drought-stress (DS) conditions. The factorial dependency of WUEi on several plant bio-physiological traits was analyzed, and clonal difference of WUEi was compared. Significant differences in WUEi were found among the clones within the population. Under WW the two clones showing the highest WUEi were significantly different from the two lowest WUEi performing clones. This could only be seen as a trend under DS. Under WW, WUEi differences were closely associated to net photosynthetic rate (An) and nitrogen isotope composition (δ15N) in the leaf biomass, but did not relate to stomatal conductance (gs) and carbon isotope composition (δ13C) in the leaf biomass. An was found to correlate significantly with leaf nitrogen concentration ([N]leaf) and chlorophyll content index (CCI) under WW. Leaf abscisic acid concentration did not correspond to the changes in gs, indicating that other factors might have been involved in controlling gs among the different clones. Collectively, the clonal differences in WUEi were attributed mainly to the variation in An, which in turn was influenced by plant N metabolism. Clones with high WUEi could be potentially used as material in future breeding programs. Furthermore CCI seemed to be a reliable tool in estimating the clonal An and thereby WUEi.",

keywords = "Intrinsic water use efficiency, Mapping population, Nitrogen, Nitrogen isotopes, Potato, Stable carbon",

author = "Topbjerg, {Henrik Bak} and Kaminski, {Kacper Piotr} and Bo Markussen and S{\o}rensen, {Kirsten K{\o}rup} and Nielsen, {K{\aa}re Lehmann} and Kirk, {Hanne Grethe} and Andersen, {Mathias Neumann} and Fulai Liu",

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doi = "10.1016/j.scienta.2014.08.006",

language = "English",

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T1 - Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions

AU - Topbjerg, Henrik Bak

AU - Kaminski, Kacper Piotr

AU - Markussen, Bo

AU - Sørensen, Kirsten Kørup

AU - Nielsen, Kåre Lehmann

AU - Kirk, Hanne Grethe

AU - Andersen, Mathias Neumann

AU - Liu, Fulai

PY - 2014

Y1 - 2014

N2 - Optimizing crops water use is essential for ensuring food production under future climate scenarios. Therefore, new cultivars that are capable of maintaining production under limited water resource are needed. This study screened for clonal differences in intrinsic water use efficiency (WUEi) within a dihaploid potato (Solanum tuberosum L.) mapping population under well-watered (WW) and drought-stress (DS) conditions. The factorial dependency of WUEi on several plant bio-physiological traits was analyzed, and clonal difference of WUEi was compared. Significant differences in WUEi were found among the clones within the population. Under WW the two clones showing the highest WUEi were significantly different from the two lowest WUEi performing clones. This could only be seen as a trend under DS. Under WW, WUEi differences were closely associated to net photosynthetic rate (An) and nitrogen isotope composition (δ15N) in the leaf biomass, but did not relate to stomatal conductance (gs) and carbon isotope composition (δ13C) in the leaf biomass. An was found to correlate significantly with leaf nitrogen concentration ([N]leaf) and chlorophyll content index (CCI) under WW. Leaf abscisic acid concentration did not correspond to the changes in gs, indicating that other factors might have been involved in controlling gs among the different clones. Collectively, the clonal differences in WUEi were attributed mainly to the variation in An, which in turn was influenced by plant N metabolism. Clones with high WUEi could be potentially used as material in future breeding programs. Furthermore CCI seemed to be a reliable tool in estimating the clonal An and thereby WUEi.

AB - Optimizing crops water use is essential for ensuring food production under future climate scenarios. Therefore, new cultivars that are capable of maintaining production under limited water resource are needed. This study screened for clonal differences in intrinsic water use efficiency (WUEi) within a dihaploid potato (Solanum tuberosum L.) mapping population under well-watered (WW) and drought-stress (DS) conditions. The factorial dependency of WUEi on several plant bio-physiological traits was analyzed, and clonal difference of WUEi was compared. Significant differences in WUEi were found among the clones within the population. Under WW the two clones showing the highest WUEi were significantly different from the two lowest WUEi performing clones. This could only be seen as a trend under DS. Under WW, WUEi differences were closely associated to net photosynthetic rate (An) and nitrogen isotope composition (δ15N) in the leaf biomass, but did not relate to stomatal conductance (gs) and carbon isotope composition (δ13C) in the leaf biomass. An was found to correlate significantly with leaf nitrogen concentration ([N]leaf) and chlorophyll content index (CCI) under WW. Leaf abscisic acid concentration did not correspond to the changes in gs, indicating that other factors might have been involved in controlling gs among the different clones. Collectively, the clonal differences in WUEi were attributed mainly to the variation in An, which in turn was influenced by plant N metabolism. Clones with high WUEi could be potentially used as material in future breeding programs. Furthermore CCI seemed to be a reliable tool in estimating the clonal An and thereby WUEi.

KW - Intrinsic water use efficiency

KW - Mapping population

KW - Nitrogen

KW - Nitrogen isotopes

KW - Potato

KW - Stable carbon

U2 - 10.1016/j.scienta.2014.08.006

DO - 10.1016/j.scienta.2014.08.006

M3 - Journal article

AN - SCOPUS:84906766125

SN - 0304-4238

VL - 178

SP - 61

EP - 69

JO - Scientia Horticulturae

JF - Scientia Horticulturae

ER -

Physiological factors affecting intrinsic water use efficiency of potato clones within a dihaploid mapping population under well-watered and drought-stressed conditions

Abstract

Keywords

UN SDGs

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