<div><strong>Background:</strong> Winged bean [<em>Psophocarpus tetragonolobus </em>(L.) DC] is a protein rich, underexploited leguminous vegetable of the tropics. It grows abundantly in hot and humid environments. The present investigation applied AMMI and GGE biplot techniques to study the patterns of GEI in 05 winged bean genotypes, to find high yielding and most stable genotype(s) suited to Chhattisgarh state of India.<br />
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<strong>Methods:</strong> An experiment was carried out to ascertain the Gene &times; Environment interaction (GEI), yield stability and adaptability of 05 winged bean (<em>Psophocarpus tetragonolobus </em>L.) genotypes in Chhattisgarh India by using AMMI and GGE biplot models.<br />
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<strong>Result:</strong> First and second component of AMMI model explained more than 84.10% of GEI variation. Genotype &lsquo;AKWB-1&rsquo; exhibited maximum trait value with specific adaptation while genotypes &lsquo;RMDWB-1&rsquo; and &lsquo;Ambika 11-3&rsquo; showed general adoptability. GGE biplot model explained that genotypes &lsquo;RMDWB-1&rsquo; and &lsquo;AKWB-1&rsquo; were the best performers in all the environments excluding E4, while &lsquo;Ambika 11-3&rsquo; was the best performer at location E4 regarding the graphical analysis models of AMMI and GGE biplot. Winged bean genotype &lsquo;AKWB-1&rsquo; was the most stable genotype in all the test environment in terms of mean yield and it would be recommended for commercial cultivation in Chhattisgarh state. Other high yielding and stable genotypes i.e., RMDWB-1 and Ambika 11-3 can also be used as parents in winged bean improvement programs.</div>


<div>Yield Stability Analysis in An Underutilized Legume &lsquo;Winged Bean&rsquo; (<em>Psophocarpus tetragonolobus </em>L.)</div>


<div><strong>Background:</strong> Winged bean (Psophocarpus tetragonolobus (L.) D.C.), is unique legume which has numerous phytochemical with distinct properties. So, this research work was performed to explore and quantify the bioactive compound from different extracts of winged bean seeds through GC-MS and to assess the bio-efficacy on cowpea seed to protect them against deterioration and bruchid.<br />
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<strong>Methods:</strong> The bioactive compounds of winged bean seed extracts (from different solvents, viz., water, ethanol and hexane) were analysed by GC-MS and the bio-efficacy of identified superlative extract on maintaining the quality of cowpea seed var. VBN 3 was done using accelerated ageing method.&nbsp;<br />
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<strong>Result: </strong>The GC-MS results showed the attendance of 30 different compounds in different extracts of the winged bean seeds. Of the different compounds eluted from extract, the ethanolic seed extract revealed the existence of distinct phytocompounds such as d-mannitol,1,4-anhydro-(1.59%), diethyl phthalate (27.21%), n-hexadecanoic acid (4.54%), 9,12-octadecadienoic acid (Z,Z)- (9.71%),&nbsp; oleic acid (14.16%), octadecanoic acid (4.89%), 9,12,15-octadecatrienoic acid and 2-phenyl-1,3-dioxan-5-yl ester (1.05%) which possess significant antioxidant and insecticidal properties. Among the different concentration of ethanolic extract, cowpea seeds treated with 2.5% of ethanolic seed extract of winged bean showed the highest germination (94%) and vigour index I (4436) compared to other treatments while the control recorded lowest germination (88%) and vigour index (3572) at initial day. As ageing progresses, seed germination percent and vigour index of 2.5% ethanolic extract treated seeds dropped to 63% and 1845 while, it is 42% and 953 in case of untreated seeds. The bio-efficacy study of ethanolic extract against bruchid revealed the LD90 value (2.5%) of winged bean seed extract. This study clearly shows that ethanolic extract of winged bean seeds have many bioactive compounds with distinct properties that maintain the seed quality under storage.</div>


Yield Stability Analysis in An Underutilized Legume ‘Winged Bean’ (Psophocarpus tetragonolobus L.)

Comparative Phytochemical Profiling of Psophocarpus tetragonolobus (L.) D.C. Seed Extracts for Effective Storage of Cowpea Seeds