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<article>
<title><b>Genetic variability and association studies for drought tolerance in groundnut</b></title>
<authors>Masoud Salehe Sultan, Julia Sibiya, Cousin Musvosvi and Patrick Okori, Wills Munthali,   Charles Harvey</authors>
<keywords>Correlation, genetic variability, groundnut, selection</keywords>
<pages>159-170</pages>
<issue_number>4 (4) 2020 </issue_number>
<issue_period>October, 2020</issue_period>
<abstract>The current study was undertaken to estimate variability (phenotypic and genotypic), heritability, genetic advance (GA), correlation and path analysis among traits of 25 groundnut genotypes evaluated under drought or moistures stress and well-watered condition. The results indicated high genetic coefficient of variation (GCV), coupled with high genetic advance (GA), genetic advance as percent of mean (GAM) and heritability for number of mature pods per plant, biomass, pod yield per plant and SPAD chlorophyll meter reading. Seed yield was highly significant and positively correlated with biomass, pod yield, relative water content, SPAD chlorophyll meter reading, harvest index, shelling percentage and days to maturity. Furthermore, path analysis showed that pod yield and SHP had the highest direct and indirect effects on seed yield respectively. Therefore, integration of these traits in drought tolerance or moisture stress tolerance breeding scheme would be advantageous in selecting groundnut genotypes that are more capable in water use efficiency.</abstract>
</article>
