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INFLUENCE OF WATER DEFICIT ON IRON AND ZINC UPTAKE BY Matricaria chamomilla L.

Chilean Journal of Agricultural Research, Apr-Jun 2012, Vol.72(2), pp.232-236 [Peer Reviewed Journal]

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  • Title:
    INFLUENCE OF WATER DEFICIT ON IRON AND ZINC UPTAKE BY Matricaria chamomilla L.
  • Author: Pirzad, Alireza ; Darvishzadeh, Reza ; Bernousi, Iraj ; Hassani, Abbas ; Sivritepe, Nuray
  • Found In: Chilean Journal of Agricultural Research, Apr-Jun 2012, Vol.72(2), pp.232-236 [Peer Reviewed Journal]
  • Subjects: Germany ; Studies ; Iron ; Zinc ; Irrigation ; Agricultural Production ; Vitamin Deficiency ; Herbs ; Western Europe ; Experiment/Theoretical Treatment ; Agriculture Industry
  • Language: English
  • Description: Iron and zinc deficiency are a yield-limiting factor with major implications for field crop production in many agricultural regions of the world; this production is essential source of Fe and Zn in human and animal diets. Two experiments were conducted under greenhouse conditions to evaluate Fe and Zn uptake by German chamomile (Matricaria chamomilla L.) grown under several drought conditions. Treatments were arranged in four irrigation regimes (95%, 80%, 65%, and 50% field capacity) and six irrigation disruptions (stem formation, flower onset, full bloom, first harvest, second harvest, and control without disruption) based on a randomized complete block design with five and four replicates in experiments 1 and 2, respectively. In Experiment 1, the irrigation regimes had no significant effect on Fe and Zn uptake by German chamomile, which reached total means of Fe (39.68 mg kg-1) and Zn (29.15 mg kg-1). In Experiment 2, the highest amount of Fe (39.0 mg kg-1) was obtained from irrigation disruption at first harvest; this is similar to the results of irrigation disruption at flower onset and full bloom. However, irrigation disruption in stem formation (21.3 mg kg-1), second harvest (12.95 mg kg-1), and the control (7.79 mg kg-1) had a decreasing trend of Fe uptake. The maximum value of Zn (40.0 mg kg-1) occurred at irrigation disruption at the full bloom stage, which was also similar to irrigation disruption at flower onset and stem formation. However, later irrigation disruptions at the first and second harvest stages caused lower amounts of Zn uptake by chamomile. Therefore, the lowest Zn values were obtained from irrigation disruption at second harvest (5.0 mg kg-1) and the control (5.5 mg kg-1). Regressions between both Fe or Zn uptake and irrigation showed a binomial function. Influencia del déficit hídrico en la absorción de hierro y zinc por Matricaria chamomilla L. La deficiencia de hierro y zinc es un factor limitante de la producción con grandes implicaciones para producción de cultivo en terreno en muchas regiones agrícolas del mundo como fuentes esenciales de Fe y Zn en dietas para humanos y animales. Para evaluar captación de Fe y Zn por manzanilla (Matricaria chamomilla L.) cultivada en varias condiciones de sequía, se realizaron dos experimentos bajo condiciones de invernadero. Los tratamientos fueron distribuidos en cuatro regímenes de riego (95, 80, 65, y 50% capacidad de campo) con cinco replicaciones y seis interrupciones del riego (formación de tallo, inicio de floración, floración completa, primera cosecha, segunda cosecha, y sin interrupción) con cuatro repeticiones basadas en diseño de bloques completos al azar en Experimentos 1 y 2, respectivamente. En Experimento 1, los regímenes de riego no tuvieron efecto significativo en captación de Fe y Zn por la manzanilla alcanzando una media total de Fe (39.68 mg kg-1) y Zn (29.15 mg kg-1). En Experimento 2, la más alta cantidad de Fe (39.0 mg kg-1) se obtuvo de interrupción de riego en primera cosecha, similar a los resultados de interrupción de riego en inicio de floración y floración completa. Pero, la interrupción del riego en formación de tallo (21.3 mg kg-1), segunda cosecha (12.95 mg kg-1) y control (7.79 mg kg-1) tuvo una tendencia a reducir la captación de Fe. El valor máximo de Zn (40.0 mg kg-1) se obtuvo de interrupción del riego en estado de floración completa, lo cual también fue similar a la interrupción en inicio de floración y formación de tallo. Sin embargo, interrupciones de riego posteriores, en primera y segunda cosechas redujeron la captación de Zn en manzanilla. Por lo tanto, los menores valores de Zn se obtuvieron con interrupción de riego en segunda cosecha (5.0 mg kg-1) y control (5.5 mg kg-1). Las regresiones entre captación de Fe o Zn y riego mostraron una función binominal. In Experiment 2, the effect of irrigation regimes on Fe and Zn uptake was highly significant (P ≤ 0.01) (Table 1). Comparisons of means indicated that the highest amount of Fe (39.0 mg kg-1) was obtained from irrigation disruption at first harvest. This value was similar to Fe uptake observed in irrigation disruption at flower onset (24.23 mg kg-1) and full bloom (29.65 mg kg-1). Early and late irrigation disruption significantly reduced Fe uptake. Therefore, irrigation disruption in stem formation (21.3 mg kg-1), second harvest (12.95 mg kg-1), and the control (7.79 mg kg-1) had a decreasing trend of Fe uptake (Figure 2A). Regression between Fe uptake and irrigation showed a binomial function that had an increasing trend for the latest irrigation disruption for plants with maximum irrigation until the flowering stage. Irrigation continued after the flowering stage and caused reduced Fe uptake by chamomile plants; therefore, the control treatments (irrigation throughout the life cycle) had the lowest Fe uptake (Figure 2A). In accordance with research objectives, our findings indicated that Fe and Zn uptake were not affected by irrigation distances, but they were significantly affected by irrigation regimes as irrigation disruption at different growth stages. Comparisons of means and binomial function between Fe uptake and irrigation showed an increasing trend for the latest irrigation disruption to flowering stage. However, excess water, irrigation continued after the flowering stage reduced Fe uptake, so that irrigation throughout the life cycle had the lowest Fe uptake. The binomial regression between Zn uptake and irrigation showed a maximum Zn uptake in irrigation disruption at full bloom (midway stage of life cycle), and regular irrigation clearly reduced Zn uptake by chamomile plants. Finally, excess water reduced Zn uptake, but both excess water and strong water deficit reduced Fe uptake.
  • Identifier: ISSN: 07185820

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