Exogenous Abscisic Acid Increases Carbohydrate Accumulation and Redistribution to the Grains in Wheat Grown Under Field Conditions of Soil Water Restriction

By C. Travaglia, A. Cohen, H. Reinoso, C. Castillo, R. Bottini. Journal of Plant Growth Regulation, 2007

85 citations recorded by the source corpus.

This work investigates the effects of abscisic acid (ABA) on physiologic parameters related to yield in wheat (Triticum aestivum) grown under field conditions with water restriction ranging between 45.7% and 49.5% of field capacity during anthesis and postanthesis. ABA (300 mg L−1) was sprayed onto the plants at the beginning of shoot lengthening which significantly promoted leaf area and higher concentrations of chlorophylls and carotenoids in flag leaf at anthesis. ABA also increased soluble carbohydrates in shoots at anthesis, which were then re-exported to the grains at maturity. This correlated with a yield increase that was achieved by a higher number and weight of grains per spike, but protein content was not significantly affected.

Subfields: Agronomy and Crop Science, Plant Science

View Paper: https://www.semanticscholar.org/paper/b72bb13350567d7d080315b4b1f6f96fb91a9d76

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Citations in the corpus

Drought Stress in Wheat during Flowering and Grain-filling Periods (2014, background): “Terminal drought stress reduced wheat yield primarily by impairing grain filling; exogenous application of ABA at anthesis improved the structural water-soluble carbohydrates, which were then transported to developing grains (Travaglia et al., 2007).”
Nitric oxide mediates abscisic acid induced thermotolerance in the calluses from two ecotypes of reed under heat stress (2008, unknown): “005 deficiency in plants [8–12].”
Participation of abscisic acid and gibberellins produced by endophytic Azospirillum in the alleviation of drought effects in maize (2009, background): “As well, ABA may have effects on carbohydrate transport and accumulation as found in wheat (Travaglia et al. 2007).”