Integrating data from asymmetric multi-models can identify drought-resistant groundnut genotypes for drought hot-spot locations

Water/drought stress experiments are frequently conducted under imposed stress or rainout shelters, while natural drought hot-spot investigations are rare. The “drought hot spot” in Anantapur, Andhra Pradesh, India, is appropriate for drought stress evaluation due to its hot, arid environment, limit...

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Published inScientific reports Vol. 13; no. 1; p. 12705
Main Authors Ajay, B. C., Kumar, Narendra, Kona, Praveen, Gangadhar, K., Rani, Kirti, Rajanna, G. A., Bera, S. K.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 05.08.2023
Nature Publishing Group
Nature Portfolio
Subjects
631/449
704/844
Arid environments
Base Sequence
Cultivars
Drought
Drought resistance
Droughts
Genotype
Genotype-environment interactions
Genotypes
Humanities and Social Sciences
India
multidisciplinary
Rain
Rainfall
Rainy season
Science
Science (multidisciplinary)
Seasons
India
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Summary:Water/drought stress experiments are frequently conducted under imposed stress or rainout shelters, while natural drought hot-spot investigations are rare. The “drought hot spot” in Anantapur, Andhra Pradesh, India, is appropriate for drought stress evaluation due to its hot, arid environment, limited rainfall, with over 50% rainfall variability. According to reports, 30 out of 200 groundnut cultivars in India are supposed to possess drought-tolerant characteristics. However, these cultivars are yet to be evaluated in areas that are prone to drought. This study tested these drought-tolerant genotypes in naturally drought-prone areas of Anantapur under rainfed conditions from Kharif 2017 to 2019. Pod yield and rainfall-use-efficiency (RUE) were measured for these genotypes. Genotype and genotype*environment interactions affected pod yield and RUE (GEI). The AMMI model exhibits significant season-to-season variability within the same area with environmental vectors > 90° angles. GGE biplot suggested the 2018 wet season for drought-resistant cultivar identification. Kadiri5 and GPBD5 were the most drought-tolerant cultivars for cultivation in Anantapur and adjacent regions. These types could also be used to generate drought-tolerant groundnut variants for drought-prone regions.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-38581-0