Pre-anthesis phosphorus sprays boost reproductive development and seed yield in heat-stressed Phaseolus vulgaris L.

Página do item simplificado
dc.citation.journaltitlePLANT SCIENCE
dc.creatorLAIRA, M. D.
dc.creatorGRACIANO, D. S.
dc.creatorANDRADE, S. A. L.
dc.creatorZAMBROSI, F. C. B.
dc.creatorRIBEIRO, R. V.
dc.date.accessioned2026-05-05T17:56:52Z
dc.date.issued2025
dc.description.resumoClimate change intensifies heat waves, threatening global food security. Common bean (Phaseolus vulgaris L.) is highly sensitive to heat waves during flowering, which disrupts source-sink relationships, reduces pollen viability, and diminishes seed yield. Phosphorus (P) deficiency further limits carbohydrate transport to reproductive tissues during heat waves. This study evaluated the efficacy of leaf P spraying in mitigating heat wave effects in common bean plants facing P deficiency (PD) and P sufficiency (PS) during flowering, i.e., phenological phases V4 to R6. A complete factorial experiment evaluated two substrate P availability during flowering (PD and PS), two leaf P spraying treatments applied during the pre-anthesis (without P spraying, -P; and with P spraying, +P), and two air temperature regimes during flowering: control (28/18 °C, day/night) and heat wave (38/28 °C, day/night). Preventive leaf P spraying improved photochemical efficiency, reduced oxidative stress, and avoided decreases in photosynthetic pigment content under heat wave. P-sprayed plants exhibited greater starch deposition in pollen grains and higher soluble carbohydrate concentration, showing less cellular damage caused by heat wave. As a result, leaf P spraying also increased seed yield under heat wave by sustaining pollen viability owing to improved supply of soluble carbohydrates to reproductive structures. These findings underscore the critical role of leaf P spraying in alleviating heat wave and impaired P acquisition in common bean during flowering by enhancing reproductive resilience and yield stability. This study highlights the potential of such a strategy of preventive leaf P spraying at critical phenological phases to improve crop performance under heat wave conditions caused by climate change.
dc.format.extent112611
dc.format.issue359
dc.identifier.citationMatheus D. Laira, Diego da S. Graciano, Sara A.L. Andrade, Fernando C.B. Zambrosi, Rafael V. Ribeiro, Pre-anthesis phosphorus sprays boost reproductive development and seed yield in heat-stressed Phaseolus vulgaris L., Plant Science, Volume 359, 2025, 112611, ISSN 0168-9452, https://doi.org/10.1016/j.plantsci.2025.112611.
dc.identifier.doihttp://dx.doi.org/10.1016/j.plantsci.2025.112611
dc.identifier.urihttps://repositorio.iac.sp.gov.br/handle/iac/62
dc.subjectCarbohydrates, Climate change, Phosphorus nutrition, Pollen viability Source-sink dynamics
dc.titlePre-anthesis phosphorus sprays boost reproductive development and seed yield in heat-stressed Phaseolus vulgaris L.

Arquivos

Coleções

Científicos