Vol. 12, Issue 7 (2023)

Author(s):
Sudhir Sharma, Omender Sangwan and Vijeta Gupta

Abstract:
A set of twenty sugarcane genotypes were evaluated in randomized block design (RBD) at CCS Haryana Agricultural University, Regional Research Station, Uchani, Karnal from February, 2021- March, 2022 to study the genetic variability, correlation and path analysis of nine characters. The analysis of variance revealed significant differences among the genotypes for all the characters under study indicating the existence of genetic variability. Coefficients of variation at genotypic and phenotypic levels, heritability (broad sense) and expected genetic advance (as percent of mean) were high for commercial cane sugar, germination (%) at 45 DAP, single cane weight, stalk length and cane yield. The commercial cane sugar, single cane weight, stalk length, number of millable canes at harvest and stalk diameter exhibited significant and positive correlation with cane yield. Commercial cane sugar (t/ha) exhibited positive and significant genotypic and phenotypic association with cane yield, single cane weight, stalk length, stalk diameter, number of millable canes at harvest, number of tillers at 120 DAP and number of shoots at 240 DAP. The analysis of path coefficient indicated that the highest positive direct contribution to cane yield was manifested by number of shoots at 240 DAP, commercial cane sugar and single cane weight. Hence, on the basis of this study it could be concluded that number of shoots at 240 DAP, commercial cane sugar and single cane weight are most important characters while selecting genotypes for higher cane yield.