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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #418289
Research Project: Development of Peanut Cultivars or Germplasm with Improved Yield and Tolerance to Biotic and Abiotic Stresses

Location: Crop Genetics and Breeding Research

Title: Nutrient uptake and nutrient use efficiency of Valencia peanut genotypes with different levels of drought tolerance under terminal drought.

Author
item SATHONGKAEN, W - Khon Kaen University
item VORASOOT, NIMITR - Khon Kaen University
item KAEWPRADIT, W - Khon Kaen University
item JANKET, A - Khon Kaen University
item Holbrook Jr, C
item JOGLOY, SANUN - Khon Kaen University

Submitted to: Journal of Plant Nutrition
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/6/2024
Publication Date: 4/3/2024
Citation: Sathongkaen, W., Vorasoot, N., Kaewpradit, W., Janket, A., Holbrook Jr, C.C., Jogloy, S. 2024. Nutrient uptake and nutrient use efficiency of Valencia peanut genotypes with different levels of drought tolerance under terminal drought.. Journal of Plant Nutrition. 47(10):1697-1709. https://doi.org/10.1080/01904167.2024.2319164.
DOI: https://doi.org/10.1080/01904167.2024.2319164

Interpretive Summary: Selection of suitable peanut genotypes with resistance to drought is an important strategy to combat problems of drought. This study aimed to investigate nutrient uptake and nutrient use efficiency (NUE) of Valencia peanut genotypes in response to terminal drought. Terminal drought reduced total nutrient uptake and NUE for biomass and pod yield among tested Valencia peanut genotypes. The ability of peanut to maintain high nutrient efficiency for biomass and pod yield might be a part of physiological mechanisms for tolerance to terminal drought conditions. ICG10890 and ICG10092 genotypes showed the highest NUE for biomass and pod yield. Genotype ICG13127 performed well regarding nutrient uptake and NUE for pod yield. These three Valencia peanut genotypes (ICG10092, ICG10890, and ICG 14127) are promising parents to use for further peanut improvements for drought tolerance.

Technical Abstract: Selection of suitable peanut genotypes with resistance to drought is an important strategy to combat problems of drought. This study aimed to investigate nutrient uptake and nutrient use efficiency of Valencia peanut genotypes in response to terminal drought. A pot experiment was conducted in a factorial randomized complete block design with 4 replications. Factor A consisted of two soil water regimes (field capacity and ¼ available water), and ten Valencia peanut genotypes were assigned as factor B. Macronutrient uptakes and nutrient use efficiencies (NUE) were examined; drought reduced nutrient uptakes, NUE for biomass and NUE for pod yield. Unique behaviors of some tested Valencia peanut genotypes on given traits were found. Genotype PI536121 had the highest K, Ca and Mg uptakes, while two genotypes ICG10890 and ICG10092 showed the highest NUE for biomass and pod yield. Genotype ICG14127 performed well regarding K, Ca and Mg uptakes and NUE for pod yield. Total nutrient uptakes of N, P, K, Ca and Mg were significantly positively correlated with biomass and pod yield (r=0.48**-0.76**), whereas the number of seeds per pod and 100-seed weight were positively correlated with total nutrient uptakes of N, K, Ca and Mg (r=0.23**-0,47**). Three tested genotypes ICG10092, ICG10890 and ICG 14127 are promising genetic sources for further improvements of Valencia peanuts for drought tolerance.