Indian Society of Genetics & Plant Breeding

Stability analysis for economic traits in kale (Brassica oleracea var. acephala L.)

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Stability analysis was carried out in sixteen kale genotypes
including three commercial checks over six environments
(three locations for two years) to identify phenotypically
stable genotypes that could perform more or less
uniformly under different environmental conditions for
various economic traits. Pooled analysis of variance for
stability in the performance of different genotypes of kale
were highly significant for all the characters viz. plant
height, plant spread, leaf thickness, stem thickness, leaf
number, leaf weight, leaf yield, leaf length, lamina length,
leaf breadth, leaf size, average stalk weight, average midrib
weight, leaf: stalk ratio, blade: midrib ratio, days to first
leaf picking and duration of picking indicating that the
material selected possessed significant variation for all
the characters under study confirming that the
environments selected were variable and random and
influenced the expression of most of the traits selected
for stability studies. Mean squares arising due to G x E
interaction were significant for most of the traits except
plant spread, leaf thickness, leaf weight, average stalk
weight, average midrib weight, blade: midrib ratio and leaf:
stalk ratio revealing that most of the characters under
study were having significant differential response to the
changing environments and the characters showing non
significant mean squares revealed, by and large, less
effects of the changing environments. In the present study
no genotype was found stable for leaf yield across
environments. However, genotypes SH-K-28, SH-K-33,
Khanyari and SH-K-21 could be recommended for
cultivation across environments on the basis of stability
performance for various economic characters.

Keywords: Kale, environments, stability, economic traits


Year: 2008
Volume: 68
Issue: 2
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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