Maize Intercropping in the Traditional "" System. Physiological, Morphological, and Agronomical Parameters under Induced Warming: Evidence of related Effect of Climate Change in San Luis Potosí (Mexico).

Life (Basel)

Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), CIACYT-Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico.

Published: October 2022

AI Article Synopsis

  • An experiment was conducted in San Luis Potosí, Mexico, to study the effects of increased temperatures on the physiological, morphological, and yield parameters of various crops, comparing warmer and cooler climates.
  • The experiment used open-top chambers to induce heat and found that while warming improved growth and development, it significantly delayed yield outcomes, with squash being the most negatively affected and beans benefiting the most.
  • The findings indicated that warming impacted photosynthetic efficiency and gas exchange differently across crops, leading to varied physiological responses and overall effects on crop systems.

Article Abstract

Warmer temperatures predicted as a result of climate change will have an impact on . An experiment was carried out with induced passive heat with the objective of simulating the increase in temperature on the physiological, morphological, and yield parameters of from different climates of San Luis Potosí, Mexico. Two different environments, Open-top chambers (OTC) and control, and three , from warm-dry, temperate, and hot and humid climates, were studied. A total of 12 experimental units of 13.13 m were used in the random design, with a factorial arrangement of 2 × 3 and two replications. Abiotic variables (minimum, maximum, and mean daily temperatures and accumulated heat units) were determined and compared between the two environments and confirmed that the OTC increased the abiotic variables. The growth and development parameters increased under the warming effect. Furthermore, the from hot and humid climate was the least affected. In contrast, the warming considerably delayed yield parameters. The squash suffered the most, while the bean benefited the most. The warming affected the chlorophyll fluorescence and gas exchange differently for each crop. However, at an early stage, the maximum photochemical efficiency (Fv/Fm) and non-photochemical quenching (qN) for bean and maize were reduced, while at a late stage, they were Fv/Fm, photochemical quenching (qP), and qN for maize; stomatal conductance and transpiration rate of the squash were improved under the warming treatments. In conclusion, the warming delayed the yield and photosynthetic parameters, while growth and development benefited. The systems were differently affected by warming.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9605515PMC
http://dx.doi.org/10.3390/life12101589DOI Listing

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