Exploring Local Maize Diversity for Increased Agricultural Sustainability: New Insights into Drought Stress Response and Recovery of Guinea-Bissau Landraces
نویسندگان
چکیده
Landraces are rightfully known as the backbone of sustainable food production, particularly in areas experiencing significant environmental constraints. However, protecting landraces from genetic erosion and valuing their potential for plant breeding production requires in-depth understanding phenotypic traits. Two Guinea-Bissau (GA, GV) two elite cultivars (P98438, P0023) were subjected to drought stress 7 (S1) 12 (S2) days. After this period plants rewatered (R). The relative water content (RWC) was unchanged S1 decreased S2 all genotypes. Chlorophyll a fluorescence parameters changed moderately remarkably S2, including on GA GV plants, where decrease Fv/Fm PI, an increase absorbed, trapped, dissipated energy per reaction center, found. P0023 showed most contrasting behavior genotypes, presenting PI values specific fluxes center (RC), whereas P9838 presented intermediate behavior. Drought (S1 S2) amount chlorophyll (Chl.) carotenoids plants. On contrary, P0023, only pigment with Chl. b. Fatty acid (FA) analyses allowed identification C16:0, C18:2, C18:3 larger amounts, C14:0, C16:1t, C18:0, C18:1 acids lower abundance. C18:3, double bond index, total FA (except increased C14:0 C16:0 acids. expression phospholipase D (PLD) higher at S2. recovery, PLD notorious landraces. smallest alterations after while Guinea’s suffered more radical leading conclusion that drought-sensitive recovery rate impaired.
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ژورنال
عنوان ژورنال: Sustainability
سال: 2021
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su13105441