The Effect of a Drying Top Soil and a Possible Non-hydraulic Root Signal on Wheat Growth and Yield

Blum, A.; Johnson, J. W.; Ramseur, E. L.; Tollner, E. W.

doi:10.1093/jxb/42.10.1225

Cited by 51 publications

(18 citation statements)

References 14 publications

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“…Such nonhydraulic signalling of drying has been observed in herbaceous species such as corn (Saab & Sharp 1989;Tardieu et al 1991), cowpea (Bates & Hall 1981), sorghum (Auge et al 1995), sunflower (Neales et al 1989), rice (Bano et al 1993), and wheat (Blum et al 1991), in woody species such as Douglas-fir (Blake & Ferrell 1977), apple (Gowing, Davies & Jones 1990), rose (Auge & Duan 1991), sycamore (Khalil & Grace 1993), some conifer species (Jackson et al 1995) and six deciduous tree species (Croker et al 1998). Hydraulic control of stomatal closure has been reported mainly in woody species such as Douglas fir (Fuchs & Livingston 1996) and Betula occidentalis (Saliendra et al 1995) and in semi-woody perennial such as Hymenoclea salsola (Comstock & Mencuccini 1998).…”

mentioning

confidence: 93%

Water relations and hydraulic control of stomatal behaviour in bell pepper plant in partial soil drying

Yao¹,

Moreshet²,

Aloni³

2001

Plant Cell Environ

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Two experiments, a split-root experiment and a root pressurizing experiment, were performed to test whether hydraulic signalling of soil drying plays a dominant role in controlling stomatal closure in herbaceous bell pepper plants. In the split-root experiment, when both root parts were dried, synchronous decreases in stomatal conductance (g s ), leaf water potential (LWP) and stem sap flow (SF stem ) were observed. The value of g s was found to be closely related to soil water potential (SWP) in both compartments. Tight relationships were observed between g s and stem sap flow under all conditions of water stress, indicating a complete stomatal adjustment of transpiration. When the half-root system has been dried to the extent that its water uptake dropped to almost zero, declines in g s of less than 20% were observed without obvious changes in LWP. The reduced plant hydraulic conductance resulting from decreased sap flow and unchanged LWP may be a hydraulic signal controlling stomatal closure; the results of root pressurizing supported this hypothesis. Both LWP and g s in water-stressed plants recovered completely within 25 min of the application of root pressurizing, and decreased significantly within 40 min after pressure release, indicating the hydraulic control of stomatal closure. Our results are in contrast to those of other studies on other herbaceous species, which suggested that chemical messengers from the roots bring about stomatal closure when plants are in water stress.

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confidence: 93%

Water relations and hydraulic control of stomatal behaviour in bell pepper plant in partial soil drying

Yao¹,

Moreshet²,

Aloni³

2001

Plant Cell Environ

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“…Hoogenboom et al (1987) observaram aumento na taxa de extração de água no solo pelas raízes de plantas de soja abaixo da camada mais seca do perfil. Resultados similares também foram descritos por Blum et al (1991), para a cultura do sorgo. Aos 58 DAE, praticamente toda a água disponível no solo de textura argila pesada tinha sido extraída pelo sistema radicular das plantas.…”

Section: Resultsunclassified

Disponibilidade de água às plantas de milho em solos de diferentes texturas

Carlesso

Santos

1999

Rev. Bras. Ciênc. Solo

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RESUMOO objetivo deste experimento foi avaliar diferenças na quantidade total de água armazenada no solo, na capacidade de armazenamento de água disponível às plantas e no consumo de água de plantas de milho cultivadas em solos de diferentes texturas. O experimento foi instalado em área do Departamento de Engenharia Rural da Universidade Federal de Santa Maria no ano agrícola 1995/ 1996. Utilizou-se um conjunto de 12 lisímetros de drenagem com dimensões de 156 cm de comprimento, 100 cm de largura e 80 cm de profundidade, protegidos das precipitações por uma cobertura móvel. Os tratamentos consistiram de dois níveis de manejos da água no solo (irrigado e déficit hídrico terminal aplicado durante a fase de crescimento vegetativo) e três texturas de solo (argila pesada, franco-argilo-siltosa e franco-arenosa). Os resultados demonstraram maior capacidade de armazenamento de água disponível às plantas para o solo de textura franco-arenosa (112 mm) do que para o solo de textura argila pesada (102 mm) e de textura franco-argilo-siltosa (94 mm). No entanto, esses valores representam 44, 41 e 77% da quantidade total de água armazenada nos solos argila pesada, franco-argilo-siltosa e franco-arenosa, respectivamente. Para uma mesma profundidade do solo e em condições de déficit hídrico, o solo de textura franco-arenosa apresenta maior capacidade de armazenamento de água disponível às plantas de milho do que os solos de textura argila pesada e francoargilo-siltosa.

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“…The scarcity of water and the uneven distribution of precipitation across time and space in this area are a very serious problem especially in recent years due to climate change. Therefore, controlled irrigation are vital for increasing crop yields and decrease water use (Aase & Pikul, 2000;Blum et al, 1991;Blum & Johnson, 1993;Li et al, 2001;Jiusheng, 1998;Katerji et al, 1998;Recio et al, 1999). Several water-saving methods have been developed (Belder et al, 2004;Bouman et al, 2007), among which, deficit irrigation is among the best technology that is used to reduce water consumption, increase water use efficiency (WUE), and subsequent use of that water for more efficient wheat production.…”

Section: Introductionmentioning

confidence: 99%

Water Use Efficiency of Durum Wheat (Triticum durum Desf) under Deficit Irrigation

M’hamed¹,

Rezig²,

Naceur³

2015

JAS

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Wheat production in semi-arid area of Tunisia is limited by low rainfall (200-400 mm year -1 ), and by the irregularity of the distribution of precipitation and intensification of drought during cropping season. Therefore, irrigation is proposed as alternative to improve production and to maximize water-use efficiency (WUE) of wheat. So, rational irrigation is important for increasing crop yields and decrease water use. The objective of this study was to investigate the effects of different irrigation levels on water consumption, water use efficiency of total dry matter and water use efficiency of grain yields. The study was conducted for three consecutive cropping seasons (2005)(2006)(2007)(2008). Results showed thatthe daily water consumption was varied through phonological stage. In fact, the maximum water consumption was observed at anthesis and grain filling stages. The cumulative water consumption was decreased between 3% and 37% respectively, from D1 (100% ETM) to D2 (70% ETM) and From D1 to D4 (rainfed). The relationship between total dry matter (TDM) and water consumption (WC) was in linearly regression with a high correlation coefficient (R 2 ) witch varied from 0.89 to 0.99. The water use efficiency of total dry matter (WUE-TDM) gradually decreased when irrigation levels increased. The highest, WUE-TDM (3.24 kg/m 3 , 3.65 kg/m 3 and 2.82 kg/m 3 ) was recorded under rainfed condition (D4 treatment), respectively for 2005-2006, 2006-2007 and 2007-2008. On the contrary, water use efficiency of grain yield (WUE-GY) increase considerably when irrigation levels increase. In the first year of experiment, no significant difference between treatments was observed. Therefore, the moderate irrigation (D2) recorded the highest WUE-GY (1.63 kg/m 3 ) in the second cropping season (2006)(2007). In 2007-2008, D1 and D3 irrigations regimes recorded the highest WUE-GY, respectively 1.17 kg/m 3 and 1.11 kg/m 3 . Deficit irrigation regimes (D2 and D3) were considered as rational irrigation levels to improve grain yield of wheat and to maximize WUE in the semi-arid area of Tunisia.

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The Effect of a Drying Top Soil and a Possible Non-hydraulic Root Signal on Wheat Growth and Yield

Cited by 51 publications

References 14 publications

Water relations and hydraulic control of stomatal behaviour in bell pepper plant in partial soil drying

Water relations and hydraulic control of stomatal behaviour in bell pepper plant in partial soil drying

Disponibilidade de água às plantas de milho em solos de diferentes texturas

Water Use Efficiency of Durum Wheat (Triticum durum Desf) under Deficit Irrigation

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