Genetic analysis for yield and yield attributing characters on advanced lines of wheat (Triticum aestivum L.) under restricted irrigation condition

Abstract

An experiment entitled “Genetic analysis for yield and yield attributing characters on advanced lines of Wheat (Triticum aestivum L.) under restricted irrigation condition” was cunducted during Rabi 2024-25 at BTC College of Agriculture and Research Station Bilaspur (IGKV, Raipur), using twenty two wheat (Triticum aestivum L.) genotypes evaluated in a randomized block design with four replication. Analysis of variance revealed highly significant difference among genotypes for all yield contributing characters. High genotypic and phenotypic cofficient of variation were recorded for grain yield per plot(kg), moderate GCV and high PCV were recorded for spike length(cm). Moderate PCV and GCV were recorded for grain filling period, no. of effective tillers per plants, flag leaf length(cm), test weight(g). High heritability for all contributing characters and genetic advance were moderate and low for yield contributing characters. Correlation analysis showed significant positive associations of grain yield per plot(kg) with no. of effective tillers, spike length, spikelets per main spike, no. of grain per main spike and harvest index (%). Path coefficient analysis revealed grain filling period, no. of effective tiller/plant, spike length(cm), spikelets per main spike, and harvest index (%) as the most important direct contributors to yield. Overall, genotypes HI1700 and CG1052 were superior in yield performance over all checks, indicating their promise for future improvement to restricted irrigated condition.