Pinto M L P B, Crasque J, Cerri Neto B, Ferreira T R, Souza C A S, Falqueto A R, De Souza T C, Machado Filho J A, Arantes L O, Dousseau-Arantes S
Post-graduation Program in Tropical Agriculture, Universidade Federal do Espírito Santo, Centro Universitário Norte do Espírito Santo, São Mateus, Espírito Santo, Brazil.
Post-graduation Program in Plant Biology, Universidade Federal do Espírito Santo, Centro de Ciências Humanas e Naturais, Vitória, Espírito Santo, Brazil.
Photosynthetica. 2023 Sep 18;61(3):377-389. doi: 10.32615/ps.2023.031. eCollection 2023.
This study investigates how cocoa rootstocks respond to flooding and post-flooding conditions, offering insights for cocoa plantation sustainability in flood-prone areas due to climate change. We studied L. rootstocks for 60 d of flooding and 30 d post-flooding, grafting PS-1319 scions onto five rootstocks (TSH-1188, Cepec-2002, Pará, Esfip-02, SJ-02). Photochemical performance remained stable across rootstocks, while flooding progressively reduced electron transport efficiency. Photochemical damage emerged after 7 d, worsening occurred at 19 d. Although post-flooding efficiency improved, recovery time was insufficient for full restoration. Stem diameter increased less in Esfip-02. TSH-1188 had the highest stem dry mass during flooding and the most root and total dry mass during post-flooding. SJ-02 had the lowest stem dry mass and post-flooding total dry mass. Principal component analysis revealed stem and root development as a key for recovery. SJ-02 and Esfip-02 showed lower flooding tolerance and recovery, while TSH-1188 and Pará exhibited higher resilience.
本研究调查了可可砧木对洪水及洪水后状况的反应，为气候变化导致的洪水易发地区可可种植园的可持续性提供见解。我们对砧木进行了60天的淹水和30天的淹水后研究，将PS - 1319接穗嫁接到五种砧木（TSH - 1188、Cepec - 2002、帕拉、Esfip - 02、SJ - 02）上。不同砧木的光化学性能保持稳定，而淹水逐渐降低了电子传递效率。7天后出现光化学损伤，19天时损伤加剧。虽然淹水后效率有所提高，但恢复时间不足以完全恢复。Esfip - 02的茎直径增加较少。TSH - 1188在淹水期间茎干质量最高，淹水后根干质量和总干质量最高。SJ - 02的茎干质量和淹水后总干质量最低。主成分分析表明，茎和根的发育是恢复的关键。SJ - 02和Esfip - 02表现出较低的耐淹性和恢复能力，而TSH - 1188和帕拉表现出较高的恢复力。
