Sudhir Sharma*, Rakesh Kumar and Ramesh Kumar
Department of Genetics and Plant Breeding, CCS Haryana Agricultural University,
Regional Research Station, Uchani, Karnal – 132001 (Haryana), India
Email: sudhir_sharma7234@rediffmail.com
Received-16.04.2022, Revised-10.05.2022, Accepted-20.05.2022
Abstract: Nineteen early maturing sugarcane clones were evaluated in randomized block design with three replications at research farm ofCCS Haryana Agricultural University, Regional Research Station, Uchani, Karnal during springseason, 2020-21. The objective of the investigation was to study genetic variability, correlation and path analysis for seventeen characters among nineteen diverse early maturing sugarcane clones. Significant differences were observed among the genotypes for all the characters studied. GCV values were highest for number of tillers at 120 DAP, commercial cane sugar (t/ha), number of shoots at 240 DAP, single cane weight, cane yield and number of millable canes at harvest.High heritability coupled with high genetic advance as per cent of mean was observed for number of tillers at 120 DAP, commercial cane sugar (t/ha) and germination per cent suggesting that these characters are governed by additive gene action and selection for these characters will be effective for further improvement in cane yield. The characters commercial cane sugar (t/ha), single cane weight, purity per cent at 8 months, cane length, number of millable canes at harvest and number of shoots at 240 DAP showed high significant and positive association with cane yield at both genotypic and phenotypic level. Path coefficient analysis revealed that commercial cane sugar (t/ha) exhibited high positive direct effect on cane yield followed by brix per cent at 10 months, commercial cane sugar at 8 months, purity per cent at 8 months, brix per cent at 8 months, cane length and number of millable canes at harvest.These characters merit special attention in formulating selection strategy in sugarcane for developing high yielding and early maturing sugarcane clones.
Keywords: Sugarcane, Genetic variability, Heritability, Genetic advance, Correlation, path Cofficient analysis
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