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VOL. 7, ISSUE 4 (2025)
Genetic evaluation of climate resilient sugarcane genotypes under drought conditions (Saccharum Officinarum L)
Authors
Dr. M Charumathi, Dr. PV Padmavathi, Dr. K Madhu Kumar, Dr. Ch Mukunda Raio, Dr.M Bharathalakhmi
Abstract
The present study evaluated the extent of
genetic variability, correlation of traits among promising popular released and
prerelease clones along with a standard CoA92081 were tested under drought
conditions at RARS, Anakapalle from 2018-19 to 2020-21. Moderate phenotypic and
genotypic coefficient of variation coupled with high heritability and genetic
advance as percent of mean were observed for Stalk population at 120DAP, NMC,
Cane length, LAI at 120DAP, CCS yield and cane yield suggested predominance of
additive gene action in governing these characters amenable for improvement
through simple selection. In contrast low to moderate GCV, PCV, moderate to
high heritability and low GAM for traits like germination, brix percent, sucrose
percent, purity percent, pol percent cane, juice extraction per cent, fibre
percent in the present study implies the narrow range of variability and
importance of non-additive gene action in inheritance of the characters. Low to
moderate GCV, PCV coupled with moderate to high heritability and GAM for traits
of number of green leaves at 120 DAP, LAI at 120 DAP, SCMR at 120 DAP, cane
girth and single cane weight indicative of both additive and non-additive gene
action in inheritance of characters. positive and significant correlation with
cane yield recorded for CCS yield, single cane weight cane girth cane length
brix % purity% NMC stalk population at 120 DAP and germination percent These
traits should be regarded as important selection criteria for cane yield
improvement program. The elite clones identified viz.,2005A128,
2006A223,2009A107,2009A252,2014A224,2014A142 can serve as valuable genetic
resources for developing climate resilient sugarcane genotypes through targeted
breeding efforts
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Pages:131-136
How to cite this article:
Dr. M Charumathi, Dr. PV Padmavathi, Dr. K Madhu Kumar, Dr. Ch Mukunda Raio, Dr.M Bharathalakhmi "Genetic evaluation of climate resilient sugarcane genotypes under drought conditions (<i>Saccharum Officinarum L</i>)". International Journal of Agriculture and Plant Science, Vol 7, Issue 4, 2025, Pages 131-136
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