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Principal component biplot showing genotypic grouping under optimum conditions. DTH, days to 50% heading; DTM, days to maturity; GY, grain yield per plot; SL, spike length; KPS, number of kennels per plant; PC, proline content; PH, plant height; TN, number of productive tillers; SPS, number of spikelets per spike; TSW, thousand seed weight.
