Spring wheat response to timing of water deficit through sink and grain filling capacity

Rajala, Ari; Hakala, Kaija; Mäkelä, Pirjo; Muurinen, Susanna; Peltonen‐Sainio, Pirjo

doi:10.1016/j.fcr.2009.08.007

Cited by 85 publications

(71 citation statements)

References 56 publications

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“…Por su parte, Rajala et al (2009) al estudiar distintos tratamientos de déficit hídrico en trigo de primavera detectaron que el número de granos por espiga y el peso individual del grano fue claramente afectado.…”

Section: Response Of Yield To Water Stressunclassified

Rendimiento de grano en trigo modificado por cambios en la fuente durante el llenado de grano

Valdés

Campuzano

Rueda

et al. 2017

Remexca

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El objetivo del presente trabajo fue evaluar el efecto de la limitación de la fuente durante la etapa de llenado de grano (antesis a madurez fisiológica) sobre los componentes fisiológicos y numéricos del rendimiento de trigo mediante defoliación y estrés hídrico. Los experimentos se llevaron a cabo en el ciclo verano-otoño 2013 (temporal; experimento 1) e invierno-primavera 2013-2014 (riego; experimento 2) en Toluca, México, a una densidad de 350 semillas m-2 y una dosis de fertilización de 200-60-30 (N-P-K); en ambos experimentos los tratamientos para reducir la fuente fueron impuestos en antesis. En el experimento 1 se estudiaron 60 líneas elite (CIMCOG) y dos tratamientos de reducción de fuente (defoliado y sin defoliar), bajo un diseño de parcelas divididas con dos repeticiones. El experimento 2 consistió de 20 genotipos seleccionados del experimento 1 y sometidos a dos regímenes hídricos (riego y sequía) en un diseño de bloques completos al azar con tres repeticiones en donde cada régimen de agua se consideró un ambiente. Se realizaron análisis de varianza de acuerdo al modelo utilizado para evaluar el efecto de los tratamientos sobre las variables respuesta. Los resultados mostraron que las condiciones de estrés (defoliación y sequía) afectaron significativamente el rendimiento de grano y sus componentes. Se observó una respuesta diferencial en el comportamiento de los genotipos en ambos experimentos. El rendimiento de grano fue menos afectado por defoliación y más drásticamente por sequía a través de reducciones en el número de granos y el peso individual de los mismos.

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Section: Response Of Yield To Water Stressunclassified

Rendimiento de grano en trigo modificado por cambios en la fuente durante el llenado de grano

Valdés

Campuzano

Rueda

et al. 2017

Remexca

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show abstract

“…This was due to the frequent drought periods during growing season on coarse and loam type soils reducing the cereal yield potential (Järvi et al 1997, Kangas et al 2008. Recently, Rajala et al (2009) studied in Finland the effects of water limitation and fertilizer availability on development of yield components. The greenhouse experiment results, using cv.…”

Section: Genotype×environmental (G×e) Variation and Covariancesmentioning

confidence: 99%

“…With dataset VII, the HiL and MidE spring wheat data from the Pöytyä and Helsinki University experimental sites was used to evaluate the Cultivation value model (Peltonen 2010). Datasets VIII (Rajala et al 2009) and IX (unpublished data) provided detailed morphological, yield quality and yield component data for HiL spring wheat genotypes. 1) Modeling phases (I-IV) are described in Fig.…”

Section: Data Sourcesmentioning

confidence: 99%

“…According to Peltonen-Sainio et al (2009) the yield trends of future wheat genotypes will constantly increase during global climate change (IPCC 2007) because of the increasing demand for food and biofuel production. Cereal theoretical maximum yield capacity is limited by environmental and vegetation stresses during growing season (Passioura 2006, Rajala et al 2009). These stress factors result in reduced non-potential baseline yield levels (y b , kg ha -1 ) for cereals in actual non-optimal field growing conditions.…”

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confidence: 99%

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A comparative ideotype, yield component and cultivation value analysis for spring wheat adaptation in Finland

Laurila¹,

Mäkelä²,

Kleemola³

et al. 2012

AFSci

Self Cite

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In this study Mixed structural covariance, Path and Cultivation Value analyses and the CERES-Wheat crop model were used to evaluate vegetation and yield component variation affecting yield potential between different highlatitude (> 60° N lat.) and mid-European (< 60° N lat.) spring wheat (Triticum aestivum L.) genotypes currently cultivated in southern Finland. Path modeling results from this study suggest that especially grains/ear, harvest index (HI) and maximum 1000 kernel weight were significant factors defining the highest yield potential. Mixed and Cultivation value modeling results suggest that when compared with genotypes introduced for cultivation before 1990s, modern spring wheat genotypes have a significantly higher yielding capacity, current high yielding midEuropean genotypes even exceeding the 5 t ha -1 non-potential baseline yield level (y b ). Because of a forthcoming climate change, the new high yielding wheat genotypes have to adapt for elevated temperatures and atmospheric CO 2 growing conditions in northern latitudes. The optimized ideotype profiles derived from the generic high-latitude and mid-European genotypes are presented in the results. High-latitude and mid-European ideotype profiles with factors estimating the effects of concurrent elevated CO 2 and temperature levels with photoperiodical daylength effects can be utilized when designing future high yielding ideotypes adapted to future growing conditions. The CERES-Wheat ideotype modeling results imply, that with new high yielding mid-European ideotypes, the non-potential baseline yield (y b ) would be on average 5150 kg ha -1 level (+ 108 %) vs. new high-latitude ideotypes (y b 4770 kg ha -1 , 100%) grown under the elevated CO 2(700ppm) ×temperature (+3°C) growing conditions projected by the year 2100 climate change scenario in southern Finland.

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“…Grain formation is a very complicated process and might be influenced by multiple factors. Drought prior to pollination strongly reduced the number of fertile florets and grains, whereas terminal drought reduced the number of grains per spike in spring wheat (Rajala et al, 2009). This could explain that the grain number in Jiyuan was less than that in Taian.…”

Section: The Grain Number Within Different Spike Partsmentioning

confidence: 99%

Characters of Rachis and Grain within Different Spike Parts in Spike Hetero Branching Wheat (Triticum aestivum L.)

Zhao

Zhang²,

Qingrong³

et al. 2012

JAS

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Spike hetero branching wheat (Triticum aestivum) (SHBW) has one main rachis, but has branched rachises at lower parts of main rachis. This type of spike could increase greatly grain number by bearing grain in branching rachis. In this study, field experiments were conducted at three locations in Huanghuai wheat zone during two growing seasons (2008)(2009)(2010). The rachises length, node number, grain number, and grain weight were investigated within five different spikes parts. The results showed that the proportion of the length of upper no-branching part to that of lower branching part within the main rachis varied from 0.49-0.99; The coefficient of variations (CVs) of main rachis length, node number within main rachis and grain number and thousand grain weight within the upper part of main rachis were 9.78%, 8.49%, 21.73% and 17.32%, respectively, but CVs of these traits within the branched rachises were 54.45%, 37.21%, 36.80%, and 19.45%, respectively. This indicated that the morphological characters within branched rachises were more easily influenced by external environments. Grain number in the whole spike and average branched rachises length were unstable under various environments and the two traits should be regarded as the main choice factors in future breeding selection in SHBW.

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Spring wheat response to timing of water deficit through sink and grain filling capacity

Cited by 85 publications

References 56 publications

Rendimiento de grano en trigo modificado por cambios en la fuente durante el llenado de grano

Rendimiento de grano en trigo modificado por cambios en la fuente durante el llenado de grano

A comparative ideotype, yield component and cultivation value analysis for spring wheat adaptation in Finland

Characters of Rachis and Grain within Different Spike Parts in Spike Hetero Branching Wheat (Triticum aestivum L.)

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