Original article | Helia 2019, Vol. 42(70) 85-99
Adeel Riaz Muhammad Hammad Nadeem Tahir Muhammad Rizwan Sajid Fiaz Sadaruddin Chachar Khuram Razzaq Bisma Riaz Hafiza Sadia
pp. 85 - 99
Published online: June 01, 2019 | Number of Views: 2 | Number of Download: 19
Abstract
In breeding programs it is imperative to recognize the genetic variations and levels of association between traits that directly or indirectly affect the yield. Achene yield and related traits in forty-nine sunflower genotypes were studied for genetic variability correlations and path coefficient analysis. The phenotypic coefficient of variation (PCV) were higher than the genotypic coefficient of variation (GCV) for the all the studied traits in sunflower. The most active association of achene yield was found with achene/head 100-achene weight and plant height. However oil contents had a negative association with achene filling percentage 100-achene weight number of leaves and stem diameter. The maximum direct influence on achene yield were exerted by head diameter followed by achene filling percentage 100 achene weight achene/head and number of leaves. In contrast plant height days to maturity and stem diameter had the negative direct impact on yield. The genetic correlations were higher than phenotypic correlations which suggest that environmental influences were very low. Our results showed that achene/head 100 achene weight plant height and head diameter are important plant traits which should be considered while planning any breeding program for higher achene yield in sunflower.
Keywords: genetic variability, correlation, path coefficient, sunflower, achene yield
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