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dc.contributor.author
Cantarero, Marcelo Gabriel
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dc.contributor.author
Abbate, Pablo Eduardo
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dc.contributor.author
Balzarini, Monica Graciela
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dc.date.available
2022-12-02T23:12:56Z
dc.date.issued
2016-07
dc.identifier.citation
Cantarero, Marcelo Gabriel; Abbate, Pablo Eduardo; Balzarini, Monica Graciela; Effect of Water Stress during the Spike Growth Period on Wheat Yield in Contrasting Weather; Agriculture Journal IJOEAR; International Journal of Environmental and Agriculture Research; 2; 7; 7-2016; 1-16
dc.identifier.issn
2454-1850
dc.identifier.uri
http://hdl.handle.net/11336/180072
dc.description.abstract
The effect of water deficit on spring wheat yield (Triticum aestivum L.) was analyzed focusing on crop growth and dry weight partitioning during the spike growth period (SGP). Two levels of water availability (rainfed and irrigated) were tested in two locations (Córdoba and Balcarce, Argentina). The degree of source limitation for grain filling was greater under rainfed conditions (12%) than under irrigation (5%); however, water stress affected yield by 40% (mean of all experiments), mainly through grain number m-2 (GN) rather than by differences in weight per grain. The decrease in GN due to water stress was associated with spikes dry weight (SDW = total spikes weight ? grain weight) measured 7 days after anthesis, but some additional experiment effect was detected on GN. Analysis of different weather variables showed the vapor pressure deficit (VPDX) as the one that best explained GN deviations. A model for GN estimation with or without water stress, was developed including the effect of water stress on SDW reduction ( ΔSDW ), where H represents no waterstress:GN 4878 51 SDWH max 10 91 VPDX, 51 ΔSDW (R =0.93).The SDW was analyzed as the product between spike growth rate (SGR) and the spike growth period (SGP) duration. SGP duration was not affected by water level, but anthesis date was up to 9 days earlier under water stress in Córdoba. SGR was more associated with crop growth rate (CGR) than with assimilates partition to spikes, and this effect increased when CGR was reduced. CGR was associated with the amount of intercepted photosynthetic active radiation during the SGP but not with the radiation use efficiency. Thus, GN was affected for both water stress reducing the availability of assimilates for spike growth and VPDX of each environment.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Agriculture Journal IJOEAR
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
SDW
dc.subject
RAINFED CONDITIONS
dc.subject.classification
Otras Ciencias Agrícolas
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dc.subject.classification
Otras Ciencias Agrícolas
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Effect of Water Stress during the Spike Growth Period on Wheat Yield in Contrasting Weather
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-12-01T14:13:27Z
dc.journal.volume
2
dc.journal.number
7
dc.journal.pagination
1-16
dc.journal.pais
India
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dc.description.fil
Fil: Cantarero, Marcelo Gabriel. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
dc.description.fil
Fil: Abbate, Pablo Eduardo. Instituto Nacional de Tecnología Agropecuaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.description.fil
Fil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.journal.title
International Journal of Environmental and Agriculture Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://ijoear.com/assets/articles_menuscripts/file/IJOEAR-JUN-2016-29.pdf
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