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Abstract
Ten (10) sunflower genotypes were evaluated in a triplicated randomized complete blocked design in field for plant height, stem diameter at base, internodal length, head diameter, number of whorls head-1, achene weight head -1 , 100-achene weight, achene oil and protein content. Association among various plant traits and direct and indirect effects of various traits on achene weight head -1 were estimated. Correlations of head diameter, 100-achene weight, stem diameter at base, internodal length and oil contents were positive and significant with achene weight head -1 . Path analysis showed that direct effects of plant height, head diameter, 100-achene weight and oil contents were positive while direct effects of stem diameter at base, internodal length, number of fertile whorls head -1 and protein contents were negative on achene weight head-1. This shows that selection based on head diameter, 100-achene weight, plant height, internodal length and stem diameter at base will be more effective in improving yield. Keywords : Sunflower, correlation coefficient, path coefficient, yield components African Journal of Biotechnology Vol. 12(16), pp. 1968-1971
Highlights
Oil and fat, being the natural carrier of vitamin A and D, are essential part of human diet and are important source of energy
Path analysis showed that direct effects of plant height, head diameter, 100-achene weight and oil contents were positive while direct effects of stem diameter at base, internodal length, number of fertile whorls head-1 and protein contents were negative on achene weight head-1
This shows that selection based on head diameter, 100-achene weight, plant height, internodal length and stem diameter at base will be more effective in improving yield
Summary
Oil and fat, being the natural carrier of vitamin A and D, are essential part of human diet and are important source of energy. Developing countries between 1963 and 2003 revealed large increase in the available consumption of calories from vegetable oils (199%). The total availability of edible oil in 2008 to 2009 was 2.821 million tons. Domestic production of edible oil stood at 684 thousand tons during 2008 to 2009, which is 24% of the total availability in the country while the remaining 76% was made available through imports (Government of Pakistan, 2011). Oil seed sunflower is the preferred source of oil for domestic consumption and cooking worldwide (Hu et al, 2010). It is considered as an important oil crop in the world nowadays, with an annual production of 20 to 25 M ha worldwide
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