Correlation and path coefficient analyses in sweet corn

Aim of this study was to determine the selection criteria for plant breeders using correlation and path coefficient analyses in a sweet corn sub population comparing 8 varieties. The trials were arranged in the Randomized Completely Block Design with three replicates under drop irrigated conditions during the 2009 and the 2010 main growing seasons under the Mediterranean climatical conditions. Analyses were done by pooling over two years due to insignificant genotype x year interactions. In conclusion, fresh ear weight could be used as a selection criterion because of its highly positive direct effects on fresh grain yield as well as indirect effects on all other characters. Row number per ear and ear length could also be considered for selection in a sweet corn breeding.

PDF

___

Bozokalfa, M.K., D. Esiyok, 2006. Morphological variability of some sweet corn genotypes. (in turkish with english abstract). Ege Üniv. Ziraat Fak. Derg. 43(2):1-12.
Bozokalfa, M.K., D. Esiyok, A. Ugur. 2004. Determination of Yield Quality and Plant Characteristic of some sweet corn (Zea mays L. var. saccharata) varieties as main and second crop in ege region. (in turkish with english abstract). Ege Üniv. Ziraat Fak. Derg. 41(1):11-19.
Dewey, D.R., K.H. Lu, 1959. A correlation and path analysis of components of crested wheat grass seed production. Agron . J. 51: 515-518.
Eleweanya, N. P., M.I. Uguru, E.E. Eneobong, P.I. Okocha, 2005. Correlation and path coefficient analyses of grain yield related characters in maize (Zea mays L.) under umudike conditions of south eastern Nigeria. Journal of Agriculture, Food, Environment and Extension. 4(1): 24-28.
Eltahir S.A., Ghizan, B.S., 2003. Response of two cycles of phenotypic mass selection and heritability on two tropical sweet corn (Zea mays L. saccharata) populations. Asian Journal of Plant Science, 2(1): 65-70.
Esiyok, D., K. Bozokalfa, A. Ugur. 2004. Determination of yield quality and some plant characteristic of some sweet corn (Zea mays L. var. saccharata) varieties in different locations (in turkish with english abstract). Ege Üniv. Ziraat Fak. Derg. 41(1):1-9.
Hefny, M., 2011. Genetic parameters and path analysis of yield and its components in corn inbred lines (Zea mays L.) at different sowing days. Asian Journal of Crop Science 3(3):106-117.
Joshi, B.K, 2005. Correlation, regression and path coefficient analyses for some yield components in common and Tartary buckwheat in Nepal. Fagopyrum 22: 77-82.
Kumar, T.S., Reddy, D.M.R.K.H., Sudhakar, P., 2011. Targeting of traits through assessment of interrelationship and path analysis between yield and yield components for grain yield improvement in single cross hybrids of maize (Zea mays L.) International Journal of Applied Biology and Pharmaceutical Technology 2(3):123-129.
Kusaksiz, T., 2010. Adaptability of some new maize (Zea mays L.) cultivars for silage production as main crop in Mediterranean environment. Turk. J. of Field Crops 15(2): 193-197.
Oktem, A., 2008. Determination of selection criterions for sweet corn using path coefficient analyses. Cereal Research Communications 36(4): 561–570. Qadir, A., M. Saleem, 1991. Correlation and path coefficient analysis in maize (Zea mays L.) Pak. J. Agri. Sci., 28(4): 395-398.
Schultheis, J.R., 1998. Sweet Corn Production. Published by North Carolina Cooperative Extension Service. (Access date: 15.09.2011, http://www.ces.ncsu.edu/depts/hort/hil/hil-13.html)
Selvaraj, C.I., P. Nagarajan, 2011. Interrelationship and path-coefficient studies for qualitative traits, grain yield and other yield attributes among maize (Zea mays L.). Int. J. Plant Breed. Genet. 5(3): 209-223.
Steel, RGD., J.H. Torrie, 1980. Principles and Procedures of Statistics. Second Edition, Mc. Graw-Hill Book Company Inc., New York.
Turgut, I. 2000. Effects of plant populations and nitrogen doses on fresh ear yield and yield components of sweet corn (Zea mays saccharata Sturt.) grown under Bursa conditions (in Turkish with English abstract). Turk. J. Agric. For. 24: 341–347.