Indian Society of Genetics & Plant Breeding

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PATH ANALYSIS OF OIL YIELD IN SUNFLOWER (HELIANTHUS ANNUUS L.) HYBRIDS

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Genotypic correlations and path coefficients were computed in sunflower hybrids. Oil
yield, oil content, fatty acids and other morphological characters were studied. Oil yield
exhibited significant positive correlation with oil content and negative correlation with
stem rot infection, whereas oil content showed positive association with stem thickness
and negative correlation with stem rot infection. Stem thickness had significant positive
correlation with plant height. Oleic acid showed highly significant negative correlation
with linoleic and linolenic acids, whereas linoleic acid had significant positive association
with linolenic acid. High positive direct effects on oil yield were shown by oil content,
100-seed weight, head diameter and oleic acid content, however plant height and palmitic
acid content had direct negative effects on oil yield through stem thickness and linolenic
acid. This investigation revealed that oil content, 100-seed weight, head diameter, stem
thickness, stem rot resistance and high oleic acid content may be given high priority for the
improvement of oil yield in sunflower hybrid breeding.
 

Keywords: Sunflower hybrids, path analysis, oil yield, fatty acids.

Info

Year: 1993
Volume: 53
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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