Rajhi I, Nefissi Ouertani R, Ferchichi N, Khiari B, El-Bassi L, Mhadhbi H
Laboratory of Legumes and Sustainable Agro Systems, Centre of Biotechnology of Borj Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
Photosynthetica. 2024 Jun 27;62(2):221-231. doi: 10.32615/ps.2024.019. eCollection 2024.
This study aimed to evaluate the impact of four biochar concentrations (0, 2, 5, and 8%) on single and interactive effects of salinity and drought stresses on the morphological, physiological, and photosynthetic parameters of faba bean plants. PCA analysis showed that plants displayed different behavior under non-stressed and stressed conditions. The most discriminating quantitative characters were related to plant biomass production and photosynthesis, especially shoot dry mass, root dry mass, plant fresh mass, internal CO concentration, net CO assimilation rate, and relative water content. The obtained results confirm the biochar's important role in promoting plant growth under normal or stressed conditions. Thus, a better understanding of the impact of biochar on plant growth under drought and salinity stresses will be beneficial for sustainable agriculture.
本研究旨在评估四种生物炭浓度（0%、2%、5%和8%）对盐度和干旱胁迫对蚕豆植株形态、生理和光合参数的单一及交互影响。主成分分析表明，植株在非胁迫和胁迫条件下表现出不同的行为。最具区分性的定量特征与植物生物量生产和光合作用有关，特别是地上部干质量、根部干质量、植株鲜质量、胞间CO₂浓度、净CO₂同化率和相对含水量。所得结果证实了生物炭在正常或胁迫条件下促进植物生长的重要作用。因此，更好地了解生物炭在干旱和盐度胁迫下对植物生长的影响将有利于可持续农业。
