Assessment of the genetic diversity of groundnut ( Arachis hypogaea L.) genotypes for kernel yield, oil and fodder quantity and quality under drought conditions

Abadya, S and Shimelis, H and Pasupuleti, J and Mashilo, J and Chaudhari, S and Manohar, S S (2021) Assessment of the genetic diversity of groundnut ( Arachis hypogaea L.) genotypes for kernel yield, oil and fodder quantity and quality under drought conditions. Crop Science (TSI). pp. 1-18. ISSN 0011-183X

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Abstract

The objective of this study was to determine drought tolerance, kernel (KY) and fodder yield and quality amongst diverse groundnut genotypes for direct production or breeding. Hundred genotypes were evaluated at ICRISAT, India during 2018–2019 and 2019–2020 under drought-stressed (DS) and non stressed (NS) conditions. Data were collected on KY; oil content (OC); oil yield (OY); protein content; palmitic, stearic, oleic, and linoleic acid contents; haulm yield (HY); and fodder quality parameters such as the contents of dry matter, ash, nitrogen (NC), neutral detergent fiber (NDFDM), acid detergent fiber (ADFDM), acid detergent lignin (ADLDM), in vitro digestibility, and metabolizable energy. Data were subjected to parametric and nonparametric statistical analyses. Combined analysis of variance revealed significant (P < .05) genotype differences for all assessed traits. Genotype × water regime interaction effects were significant for KY, OC, ash, NC, NDFDM, and ADLDM. Kernel yield positively and significantly (P < .05) correlated with OY (r = .99), LAC (r = .13), ash (r = .32), and NDFDM (r = .54) under DS condition. Haulm yield was positively and significantly (P < .05) correlated with OC (r = .24),NDFDM(r = .19), ADFDM (r = .18), and ADLDM (r = .17) under DS condition. The study identified four genotypes with high kernel and haulm yields, and six genotypes with high oleic acid content. Further, 10 genotypes were selected with relatively better drought tolerance. The selected genotypes are recommended for further breeding and variety release adapted to drought conditions.

Item Type:	Article
Divisions:	Research Program : Asia
CRP:	CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords:	Groundnut, Drought Tolerance, Breeding, Fodder
Subjects:	Others > Drought Tolerance Mandate crops > Groundnut
Depositing User:	Mr Arun S
Date Deposited:	29 May 2021 11:54
Last Modified:	29 May 2021 11:54
URI:	http://oar.icrisat.org/id/eprint/11829
Official URL:	https://doi.org/10.1002/csc2.20483
Projects:	UNSPECIFIED
Funders:	Organization of the Petroleum Exporting Countries (OPEC) Fund for International (OFID), International Foundation for Science (IFS), Haramaya University and University of KwaZuluNatal
Acknowledgement:	Authors are very thankful to Groundnut Breeding Program and International Livestock Research Institute (ILRI) based at ICRISAT, India for the technical assistance during the analysis of groundnut haulms for fodder quality and digestibility. ICRISAT is thanked for providing the groundnut germplasm used in the study.
Links:	Google Scholar

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