Path Analysis For Yield and Quality Traits in Soybean [Glycine max (L.) Merrill.]
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Date
2005
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Publisher
MPUAT, Udaipur
Abstract
The present investigation entitled “Path analysis for yield and quality traits in soybean
[Glycine max (L.) Merrill.]” was carried out with 18 genotypes of soybean. The genotypes were
planted in randomized block design with three replications, during kharif 2004-2005 at the
Instructional Farm of Rajasthan College of Agriculture, Udaipur.
Observations were recorded on fifteen characters viz., days to 50% flowering, days to 75% per
cent maturity, plant height, number of branches per plant, number of pods per plant, 100-seed
weight, biological yield per plant, seed yield per plant, harvest index, protein content, soluble
protein content, oil content, acid value, saponification value and iodine value. Statistical analysis
was undertaken to estimate variability parameters, correlation and path analysis.
Analysis of variance exhibited significant differences among genotypes for all the characters,
suggesting the presence of a good deal of variability in the material under study. Number of branches
per plant, seed yield per plant and pods per plant, showed high genotypic coefficient of variation,
heritability and genetic gain, hence, selection can be practiced for their improvement. Soybean entries
Pusa 24, JS 335 and NRC 12 were identified superior for various quantitative traits. JS 80-21 for
protein and RAUS 79-5 and Pusa 22 for oil identified as superior. Association studies revealed that
seed yield per plant exhibited positive and significant association with pods per plant, biological yield
per plant, number of branches per plant, harvest index, 100-seed weight, protein content and soluble
protein content. All the above-mentioned characters also showed positive and significant mutual
association between themselves, except harvest index with number of branches per plant and
biological yield per plant.
Path coefficient analysis revealed that 99%variability of seed yield was explained by these
traits and direct effect of biological yield per plant and harvest index were of higher magnitude
contributing to positive association with seed yield per plant. Hence, it can be concluded that grain
yield was mainly a product of direct as well as indirect effects of biological yield per plant and harvest
index.
Description
Path Analysis For Yield and Quality Traits in
Soybean [Glycine max (L.) Merrill.]
Keywords
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Citation
Saharan and Sharma, 2005