Claim · model-written summary
Foliar application of Zn(Met)2 was the most effective treatment, increasing seed yield by approximately 85%.
- Taxon
- sunflower
Helianthus annuuse1 - Treatment
- Foliar application of [Zn(Met)₂]e3
- Outcome
- seed yielde3
- Direction
- increasinge3
- Value
- approximately 85%e3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“This study assessed the effectiveness of Zn-aminochelates, compared with conventional ZnSO₄, applied through various application methods, in improving physiological traits, growth, yield, and seed Zn biofortification in sunflower (Helianthus annuus L.) under calcareous soil conditions”
e3“Foliar application of [Zn(Met)₂] was the most effective treatment, increasing seed yield by approximately 85%, oil yield by about 2.5-fold, and seed Zn uptake by nearly twofold, while also enhancing physiological traits, antioxidant enzyme activities, and protein accumulation”
Title
Mina Alipourbabadi; Mojtaba Norouzi Masir; Abdolamir Moezzi; et al. BMC Plant Biology 2026. doi:10.1186/s12870-026-08899-8
Other claims from this paper (7)
- Intervention effect Zn-aminochelates significantly improved seed yield, biomass production and Zn accumulation compared with ZnSO4.
- Intervention effect Foliar Zn(Met)2 increased oil yield about 2.5-fold.
- Intervention effect Foliar Zn(Met)2 increased seed Zn uptake nearly twofold.
- Intervention effect Foliar Zn(Met)2 enhanced physiological traits, antioxidant enzyme activities and protein accumulation.
- Association The N/S ratio decreased concomitantly with increased seed oil content.
- Mechanism The superior performance of methionine-based Zn chelates is likely linked to their role in sulfur metabolism, Zn mobility and antioxidant regulation.
- Recommendation Foliar application of Zn-aminochelates is an effective and practical biofortification strategy for sunflower productivity and nutritional quality on calcareous soils.