QUANTITATIVE TRAIT LOCI (QTL) MAPPING FOR DROUGHT TOLERANCE AND YIELD IN NIGERIAN GROUNDNUT (ARACHIS HYPOGAEA) VARIETIES
Abstract
This study investigates the genetic basis of drought tolerance and yield in Nigerian groundnut (Arachis hypogaea) varieties through Quantitative Trait Loci (QTL) mapping and phenotypic analysis. Addressing the critical need for improved drought tolerance, it employs modern molecular breeding techniques to identify key genomic regions associated with resilience and productivity under water stress, supporting sustainable agriculture in Nigeria's challenging climatic conditions. A diverse panel of groundnut genotypes was evaluated under drought-stressed and well-watered conditions across multiple locations in Nigeria. Significant differences were observed in wilting scores, root lengths, and pod yields among the genotypes, with local landrace G3 and improved variety V2 demonstrating superior drought tolerance. Specifically, G3 maintained a pod yield of 3200 kg/ha under drought stress, while the exotic variety E1 yielded only 1900 kg/ha. QTL mapping identified four major QTLs significantly associated with drought tolerance traits: qDT1 (root length), qDT2 (stomatal conductance), and qYLD1 (pod yield under drought), explaining 35%, 28%, and 40% of the phenotypic variance, respectively. High heritability estimates for root length (0.75), wilting score (0.68), and pod yield under drought (0.62) suggest that these traits can be effectively improved through selection. The positive correlations between root length and pod yield (r = 0.58) and relative water content (RWC) with stomatal conductance (r = 0.62) further indicate that selecting for these traits could enhance yield stability under drought conditions. These findings underscore the potential of utilizing QTL mapping and marker-assisted selection to develop drought-resistant, high-yielding groundnut varieties tailored to Nigeria's diverse agro-climatic conditions, contributing to...
References
Ani D P Umeh J C Weye E A 2013 Profitability and economic efficiency of groundnut production in Benue State Nigeria African Journal of Food Agriculture Nutrition and Development 134 80918105
Ashraf M Harris P J C 2020 Potential of glycinebetaine in improving plant growth and stress tolerance Plant Growth Regulation 732 211227 httpsdoiorg101007s10725020005982
Boontang S Girdthai T Jogloy S Akkasaeng C Vorasoot N Patanothai A Tantisuwichwong N 2010 Responses of released cultivars of peanut to terminal drought for traits related to drought tolerance Asian Journal of Plant Sciences 97 423431 httpsdoiorg103923ajps2010423431
ifti S Suna G 2022 Functional components of peanuts Arachis hypogaea L and health benefits A review Future Foods 5
Choudhary S Gupta R Kumar P 2021 Evaluation of drought tolerance in groundnut genotypes Journal of Agronomy and Crop Science 2074 481490 httpsdoiorg101111jac12450
Dwivedi S L Pande S Rao J N Nigam S N 2002 Components of resistance to late leaf spot and rust among interspecific derivatives and their significance in a foliar disease resistance breeding in groundnut Arachis hypogaea L Euphytica 1251 8188 httpsdoiorg101023A1015707301659
Dhanapal A Prakash M Murugaiyan V 2022 Genetic diversity in groundnut genotypes for drought tolerance Crop Science 621 312323 httpsdoiorg101002csc220230
Falalou H Sani M A Hassane Y B Falke B A Upadhyaya D H 2017 Abiotic stress tolerance and nutrients contents in groundnut pearl millet and sorghum mini core germplasm for food and nutrition security Indian Journal of Plant Genetic Resource 303 201209 httpsdoiorg105958097619262017000250
Girdthai T Jogloy S Vorasoot N Akkasaeng C Wongkaew S Holbrook C Patanothai A 2010 Associations between physiological traits for drought tolerance and aflatoxin contamination in peanut genotypes under terminal drought Plant Breeding 1296 693699 httpsdoiorg101111j14390523200901738x
Jayant K S Sarangi S K 2015 Effect of drought stress on epicuticular wax load in peanut genotypes Journal of Applied Biology Biotechnology 31 4648
Khedikar Y P et al 2010 A QTL study on late leaf spot and rust revealed one major QTL for molecular breeding for rust resistance in groundnut Arachis hypogaea L Theoretical and Applied Genetics 1215 971984 httpsdoiorg101007s0012201013667
Khedikar Y P et al 2018 Correction to Identification of main effect and epistatic quantitative trait loci for morphological and yieldrelated traits in peanut Arachis hypogaea L Molecular Breeding 381 7 httpsdoiorg101007s110320170764z
Koolachart R Jogloy S Vorasoot N Wongkaew S Holbrook C C Jongrungklang N Kesmala T Patanothai A 2013 Rooting traits of peanut genotypes with different yield responses to terminal drought Field Crops Research 149 366378 httpsdoiorg101016jfcr201305024
Krishnamurthy L Vadez V Devi M J Serraj R Nigam S N Sheshshayee M S Chandra S Aruna R 2007 Variation in transpiration efficiency and its related traits in a groundnut Arachis hypogaea L mapping population Field Crops Research 1033 189197 httpsdoiorg101016jfcr200706009
Liu H et al 2020 QTL mapping of web blotch resistance in peanut by highthroughput genomewide sequencing BMC Plant Biology 201 111 httpsdoiorg101186s1287002002522z
MartnezOrtega I A et al 2023 Can different types of tree nuts and peanuts induce varied effects on specific blood lipid parameters A systematic review and network metaanalysis Critical Reviews in Food Science and Nutrition httpsdoiorg1010801040839820232296559
Masoodi M et al 2021 Metabolomics and lipidomics in NAFLD Biomarkers and noninvasive diagnostic tests Nature Reviews Gastroenterology and Hepatology
Miao P et al 2023 Mapping quantitative trait loci QTLs for hundredpod and hundredseed weight under seven environments in a recombinant inbred line population of cultivated peanut Arachis hypogaea L Genes 149 httpsdoiorg103390genes14091875
Mafakheri A Siosemardeh A Bahramnejad B Struik P C Sohrabi E 2010 Effect of drought stress on yield proline and chlorophyll contents in three chickpea cultivars Australian Journal of Crop Science 48 580585
Qi F et al 2022 QTL identification fine mapping and marker development for breeding peanut Arachis hypogaea L resistant to bacterial wilt Theoretical and Applied Genetics 1354 13191330 httpsdoiorg101007s0012202204033y
Reddy K R Ali J 2020 Root traits and drought resistance in legumes Journal of Plant Physiology 243 153162 httpsdoiorg101016jjplph2020153162
Reddy T Y Reddy V R Anbumozhi V 2003 Physiological responses of groundnut Arachis hypogaea L to drought stress and its amelioration A critical review Plant Growth Regulation 411 7588 httpsdoiorg101023A1027353430164
Sallam A Dawood M F Jarqun D Mohamed E A Hussein M Y Brner A Ahmed A A 2024 Genomewide scanning to identify and validate single nucleotide polymorphism markers associated with drought tolerance in spring wheat seedlings The Plant Genome e20444
S
chwietzke S Kim Y Ximenez E Mosier N Ladisch M 2009 In Molecular genetic approaches to maize improvement AL Kriz BA Larkins Eds SpringerVerlag 347364
Votapwa IO Abdullaziz FB Sheidu A Mustapha T Ahmad YA Ismail SN Jibrin IM Tanimu SA and Abubakar UI 2024a Evaluation of Resistance to Aflavus infestation on 50 peanut Arachis hypogaea L in Northern Nigerias Semi Arid regions Proceedings of the 2nd Hybrid Annual Conference Plant Breeders Association of Nigeria Renewed hope for Nigerian AgricultureInnovations and Technology in Plant Breeding for Sustainable Food Systems November 68 Pp 106117
Votapwa IO Abdullaziz FB Sheidu A Mustapha T Ahmad YA Ismail SN Jibrin IM Tanimu SA and Abubakar UI 2024b Genetic Improvement of Peanut Arachis hypogaea L for Bacterial Wilt Resistance Screening and Breeding Strategies in Nigerian Cultivars Proceedings of the 2nd Hybrid Annual Conference Plant Breeders Association of Nigeria Renewed hope for Nigerian AgricultureInnovations and Technology in Plant Breeding for Sustainable Food Systems November 68 Pp 118127
Zhao Y Zhang X Huang Y 2021 Genotype environment interaction in drought tolerance evaluation Agricultural Sciences 127 711725 httpsdoiorg104236as2021127056
Zheng Z et al 2024 Chloroplast and wholegenome sequencing shed light on the evolutionary history and phenotypic diversification of peanuts Nature Genetics 569 19751984 httpsdoiorg101038s41588024018767
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