Abstract

AbstractWhite maize is the new maize (Zea mays L.) cultivar in Bangladesh. The country needs high‐yielding white maize varieties for farmers’ cultivation, but developing such variety requires appropriate inbred lines. Here, nine F2 populations of white maize were evaluated through assessment of their genetic variability, heritability, and character association for selection of promising lines based on yield and growth parameters. Analysis of genetic variability showed that there were significant variations among the various genotypes of F2 populations. High heritability coupled with large genetic advances in percentage means were obtained in plant height, cob height, number of branches per tassel, number of cobs bearing node, leaf blade area, and grain yield per plant. The analysis of path coefficient indicated positive direct contribution towards yield per plant through days to 50% tasseling, days to 50% silking, cob height, days to maturity, number of branches of the tassel, cob breadth, and number of grains per row. The results thus indicated that indirect selection based on plant height, days to maturity, cob height, leaves per plants, cob length, number of rows per cob, and number of grains per row are reliable to select the appropriate lines for yield improvement in white maize. In view of the yield and its contributing characteristics, the population of KS 510 has a high yield potential for improvement of the varietal performance of white maize.

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