Hauptseite > Publikationsdatenbank > Field scale plant water relation of maize (Zea mays) under drought – impact of root hairs and soil texture > print

001     909806
005     20230301073347.0
024 7 _ |a 10.1007/s11104-022-05685-x
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024 7 _ |a 0032-079X
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024 7 _ |a 1573-5036
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024 7 _ |a 2128/32395
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024 7 _ |a WOS:000850758800001
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037 _ _ |a FZJ-2022-03427
082 _ _ |a 580
100 1 _ |a Jorda, Helena
|0 P:(DE-Juel1)177809
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245 _ _ |a Field scale plant water relation of maize (Zea mays) under drought – impact of root hairs and soil texture
260 _ _ |a Dordrecht [u.a.]
|c 2022
|b Springer Science + Business Media B.V
336 7 _ |a article
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520 _ _ |a Background and aimsImpact of drought on crop growth depends on soil and root hydraulic properties that determine the access of plant roots to soil water. Root hairs may increase the accessible water pool but their effect depends on soil hydraulic properties and adaptions of root systems to drought. These adaptions are difficult to investigate in pot experiments that focus on juvenile plants.MethodsA wild-type and its root hairless mutant maize (Zea mays) were grown in the field in loam and sand substrates during two growing seasons with a large precipitation deficit. A comprehensive dataset of soil and plant properties and monitored variables were collected and interpreted using simulations with a mechanistic root water uptake model.ResultsTotal crop water use was similar in both soils and for both genotypes whereas shoot biomass was larger for the wild type than for the hairless mutant and did not differ between soils. Total final root length was larger in sand than in loam but did not differ between genotypes. Simulations showed that root systems of both genotypes and in both soils extracted all plant available soil water, which was similar for sand and loam, at a potential rate. Leaf water potentials were overestimated by the model, especially for the hairless mutant in sand substrate because the water potential drop in the rhizosphere was not considered.ConclusionsA direct effect of root hairs on water uptake was not observed but root hairs might influence leaf water potential dependent growth.
536 _ _ |a 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)
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700 1 _ |a Ahmed, Mutez A.
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700 1 _ |a Javaux, Mathieu
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700 1 _ |a Carminati, Andrea
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700 1 _ |a Duddek, Patrick
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700 1 _ |a Vetterlein, Doris
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700 1 _ |a Vanderborght, Jan
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773 _ _ |a 10.1007/s11104-022-05685-x
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|v 478
|y 2022
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856 4 _ |u https://juser.fz-juelich.de/record/909806/files/Invoice_2936174587.pdf
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