Indian Society of Genetics & Plant Breeding
Nine sugarcane genotypes evaluated for commercial
cane sugar yield under six environments.The objective
of this investigation was to identify sugarcane
genotypes with good phenotypic stability for sugar
yield over the environments using nonparametric
measures. Further, the relationship among
nonparametric as well as some classical parametric
measures of stability were also studied. Based on
estimates Sill and si2, from uncorrected data, Co 1148
had shown maximum stability with low sugar yield,
however, Colk 9710 was most stable with high sugar
yield based on Si3, measure. On the other hand, the
values of Sill and SI(2) obtained from transformed data
indicating that CoS 97264 had maximum stability.
However, the estimate of Si3, from transformed data,
reflected the maximum stability in Colk 9606 for CCS
yield. Based on the rank correlation among different
measures of stability, sill and si2)were nearly perfectly
associated with high significant positive value
indicating that two measures were similar in classifying
the genotypes according to their stability over the
environmental conditions. The statistic Si3, may be
utilized for simultaneous selection for yield and
stability.
Keywords: Nonparametric measures, phenotypic stability, G x E interaction, sugarcane
Year: 2007
Volume: 67
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
Sanjeev Kumar, J. Singh, P. K. Singh and D. K. Pandey info_circle
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