Path Coefficient Analysis in Coconut
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2007-02
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Yield in coconut is a complex character dependent upon a large number of components and their interactions. Path coefficient analysis was carried out to know direct and indirect effects of characters influencing yield. The correlation coefficients were partitioned into direct effects (path coefficients) and indirect effects in order to pinpoint the direct and indirect effects of these associations. In 43 progenies of eight high yielding W.C.T. palms of known parentage, planted at CPCRI, Kasaragod in 1953, 12 vegetative as well as reproductive characters observable at different stages of growth till yield stabilization were observed. The age of plants was calculated from the date of sowing of nuts. Path coefficient analysis was carried out for two yield characters namely, (1) yield of nuts during stabilized period, (2) cumulative yield upto 24 years after sowing, taking two sets of yield contributing characters. Seven yield contributing characters were kept common in these two analyses. The analysis for yield of nuts during stabilized period showed that the major contributing characters which influenced directly or indirectly were average number of female flowers, number of functioning leaves at 19 years, and internodal distance at fixed mark. These characters influenced yield negatively indicating their value in selection.
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In: Proceedings, PLACROSYM IV, CFTRI, Mysore, 3-5 Dec. 1981. Edited by S. Vishveshwara and others 1982 p-191-199