| Pak. J. Bot., 38(1): 121-130, 2006. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
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CHARACTER CORRELATION AND PATH COEFFICIENT IN SOYBEAN GLYCINE MAX (L.) MERRILL MUHAMMAD ARSHAD*1, NAAZAR ALI* AND ABDUL GHAFOOR**
Abstract: Thirty-three soybean genotypes were evaluated for days to flowering,
days to maturity, pod length, number of branches, number of unfilled,
filled pods and total pods, 100 seed weight and seed yield. Grain yield
(kg ha-1) was estimated on the basis of 12 m2
plot size. Genetic parameters, correlation, path coefficients and linkage
distances were estimated for all these traits. Analysis of variance
and mean performance for yield and its components revealed significant
differences among all the genotypes for all the characters. Seed weight
had positive correlation with unfilled, filled and total pods. Grain
yield had positive and significant correlation with all the characters
except days to flowering and seed yield per 5 plant. Moreover, it had
significant but negative correlation with days to maturity and also
negatively correlated with un-filled pods. Days to maturity, branches,
pod length, pods and 100 seed weight had positive direct effects on
grain yield. High indirect effect was also exhibited via pod length
by most of the traits hence these characters may be given more emphasis
while selecting high yield soybean lines. Cluster diagram based on Euclidean
dissimilarity revealed three clusters at 50% linkage distance, cluster
I consisted 14 genotypes, cluster II 8 and cluster III 11 genotypes.
The accessions in the cluster III were of short duration and high yielding
having high seed weight.
Oilseeds Program, Crop Sciences Institute, National Agricultural Research
Center (NARC),
Islamabad 45500-Pakistan, Ph: 92-51-9255198 |
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