Author(s):

SK Sinha, Rahul Singh, Jitendra Tiwari and Dinesh Thakur

Abstract: The present investigation was conducted with one ninety six maize (<em>Zea mays </em>L.) genotypes to evaluate their performance for principal component analysis in randomized block design with two replications. Total 14 PC groups were formed and out of these, only four principal components (PCs) exhibited more than 1.0 Eigen value and showed about 76.11% variability among the traits studied. The PC1 had 33.42%, PC2 showed 19.05%, PC3 exhibited 16.49% and PC4 showed 7.15% variability for traits under study. PC scores revealed that genotype TNAU/CBE-98, CAL 14114, IAMI-73, CAL 1462, CAL 14111 and Z490-23 in PC1 indicated that they had highly and positively associated for the characters contributed for yield traits viz., days to 80% maturity, final plant stand, plant height, ear height, ear length, ear girth, number of cobs per plot, number of kernels per row, test weight and grain yield kg per plot. The highest PC score of IAMI-44 followed by BLD 7, PFSR R5, Pharas gaon I-4, Jagdalpur I-2, IAMI-7, SC-104(2011), IAMI-33, PC-106 and Pharas gaon I-1 in PC2 exhibited for characters number of kernels per row and shelling percentage. Highest PC scores was obtained by IAMI-40, IAMI-29, IAMI-17, CML289-B-B-B, IAMI-22, IAMI-55, IAMI-35, VL121230, TNAU/CBE-98 and Pharas gaon I-I for characters like, days to 50% tasseling, days to 50% silking and ear length. PC scores in PC4 were recorded highest for characters plant height and ear height in genotypes DMR 10 RYFWS 8384 (B), SC-24-9(C12)-3-2-1-1, CM 104, IAMI-87, Jagdalpur I-2, IAMI-74, IAHM 2015-45, EC-611064, Z489-92 and Pharas gaon II-I. Among these the genotypes CAL 14114, IAMI-73, CAL 1462, Z490-23, TNAU/CBE-98, IAMI-44, BLD 7, PFSR R5, Jagdalpur I-2, IAMI-7, IAMI-33, PC-106, IAMI-40, IAMI-29, IAMI-17, IAMI-22, IAMI-55, IAMI-35, VL121230, EC-611064 and Z489-92 were identified as diverse lines.

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