Author(s):

Rohit Kumar Saini, SA Kerkhi, Kamal Khilari, Pooran Chand, SK Singh and MK Yadav

Abstract: The present experiment on bread wheat (Triticum aestivum L.) was carried out with 17 parents and 52 F₁'s developed from line x tester mating design to find out the genetic association among various important economic characters for the purpose of genetic enhancement in the grain yield of wheat. The parental lines (13 lines and 4 testers) were grown during rabi, 2015-2016 and 52 cross combinations among lines and testers were made and the seeds of parental lines and 52 crosses were procured. The experiment was conducted at Crop Research Center (Chirodi Block) of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U.P.) under timely sown conditions during rabi, 2016-17. Estimation of correlation coefficient at phenotypic level, grain yield per plant exhibited highly significant and positive association with harvest index, biological yield per plant, grain per spike, days to 50 % flowering, spikelets per spike, spike length, gluten content and productive tillers per plant indicated that by improving these traits could made improvement in yield. Genotypic and phenotypic path coefficient revealed that harvest index and biological yield per plant had high (0.30 to 1.00) direct effect on grain yield. Therefore, direct selection for these two traits would be effective for further yield improvement in wheat genotypes.

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