Effect of drought on yield and yield components of durum wheat and triticale in a Mediterranean environment

Giunta, Francesco; Motzo, Rosella; Deidda, Mauro

doi:10.1016/0378-4290(93)90161-f

Cited by 157 publications

(84 citation statements)

References 19 publications

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“…The highest reduction (85%) related to 'Rihane-05' genotype. Kirby and Jones (1997) and Giunta et al (1993) also reported that mean decreased in grain yield under drought stress. In addition, decline of grain yield and components yield reported in Tab.…”

Section: Resultsmentioning

confidence: 99%

Water Deficit Stress Tolerance in Some of Barley Genotypes and Landraces under Field Conditions

Aboughadareh

Naghavi²,

Khalili³

2013

Not Sci Biol

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In order to investigate the effects of water deficit stress on some agro-morphological and physiological traits of seven genotypes and five landraces of barley, a split plot experiment was conducted a completely randomized block design with four replications in 2011-2012 cropping season at experimental field of College of Agriculture, Payame Noor University of Center, West Azerbaijan, Iran. Analysis of variance revealed significant differences among genotypes and landraces for all of the studied traits, and showed highly significant effects of water deficit stress on all the studied traits. Based on correlation analysis, all the characters included in the study except leaf temperature and number of grain per spike showed significant positive correlation with grain yield under both conditions. In terms of physiological characters high significant correlation coefficient was found between relative water content and grain yield under stress condition; however, high significant correlation coefficient observed between fluorescence chlorophyll and grain yield under non-stress condition. 1000-grain weight had negative correlation with all characters except leaf temperature under non-stress condition. However, this character had significant and positive correlation with fluorescence chlorophyll, relative water content, SPAD value, spike length, number of spike per plant under stress condition. Considering the grain yield potential 'Naghadeh' , 'Piranshahr' and 'Mahabad' landraces together with 'CW3117-77' genotype were ranked as the superior group of drought tolerant barley. On the other hand, 'Naghadeh' landrace was identified as a barley landrace that could be grown under both normal and water deficit stress conditions with high grain yield.

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Section: Resultsmentioning

confidence: 99%

Water Deficit Stress Tolerance in Some of Barley Genotypes and Landraces under Field Conditions

Aboughadareh

Naghavi²,

Khalili³

2013

Not Sci Biol

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“…† Least significant difference at P = 0.05. grains spike −1 , traits that develop during the period most sensitive to drought occurrence, i.e., from double ridge to anthesis (Shpiler & Blum, 1991). Giunta et al (1993) also reported that severe water deficit around anthesis seriously influences wheat yield, reducing the number of spikes and spikelets and, therefore, decreasing plant fertility. Mean grain weight was less affected by water shortage under rainfed conditions, appearing as a relatively stable trait, possibly due to the high proportion of translocated pre-anthesis reserves for grain filling when the photosynthetic source is limited by stress (Bidinger et al, 1977;Blum, 1983;Blum et al, 1994).…”

Section: Effect Of Water Stress On Grain Yield and Its Related Characmentioning

confidence: 99%

Yield Formation in Mediterranean durum wheats under two contrasting water regimes based on path-coefficient analysis

et al. 2005

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SummaryThe components of grain yield are altered by adverse growing conditions as the effects of certain environmental factors on crop growth and yield differ depending upon the developmental stages when these conditions occur. Path-coefficient analysis was used to investigate the main processes influencing grain yield and its formation under Mediterranean conditions. Twenty-five durum wheat genotypes, consisting of four Spanish commercial varieties and 21 inbred lines from the ICARDA durum wheat breeding program, were grown during 1997 and 1998 under both rainfed and irrigated conditions in southern Spain. Path-coefficient analysis revealed that under favourable conditions grain yield depended in equal proportion on the three primary yield components (i.e. spikes m −2 , grains spike −1 , and mean grain weight), whereas in the rainfed experiments, variations in grain yield were due mainly to spikes m −2 and to a lesser extent to grains spike −1 . Compensatory effects were almost absent under irrigated treatments; however, under water shortage, spikes m −2 exerted a negative influence on grain spike −1 due mainly to a negative interrelationship between tiller production and apical development. These compensatory effects could partially explain the restricted success in durum wheat breeding observed in water-limited environments of the Mediterranean region. Under rainfed conditions the number of spikes m −2 depended mainly on the ability for tiller production, whereas in the irrigated experiments the final number of spikes was determined mostly by tiller survival.

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“…Resultados similares reportan que el número de granos por m2 bajo condiciones de sequía dependió en 43% de las espigas por m2 y 56% de los granos por espiga (Ortíz et al, 2003). Sin embargo, Giunta et al (1993) al estudiar los efectos de la sequía sobre el rendimiento y sus componentes de trigo durum en ambientes de tipo mediterráneo, reportaron que los componentes afectados fueron el número de espigas fértiles por unidad de área y el número de granos por espiga.…”

Section: Response Of Yield To Water Stressunclassified

“…Similar results report that the number of grains per m2 under drought conditions depended on 43% of spikes per m2 and 56% of grains per spike (Ortíz et al, 2003). However, Giunta et al (1993), studying the effects of drought on yield and its durum wheat components in Mediterranean-type environments, reported that the main components affected were the number of fertile spikes per unit area and the number of grains per spike. al cambio en el número de granos por espiga (Figura 6).…”

Section: Response Of Yield To Water Stressmentioning

confidence: 99%

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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Effect of drought on yield and yield components of durum wheat and triticale in a Mediterranean environment

Cited by 157 publications

References 19 publications

Water Deficit Stress Tolerance in Some of Barley Genotypes and Landraces under Field Conditions

Water Deficit Stress Tolerance in Some of Barley Genotypes and Landraces under Field Conditions

Yield Formation in Mediterranean durum wheats under two contrasting water regimes based on path-coefficient analysis

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

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