Study of correlation and path coefficient analysis in germplasm lines of Indian mustard (Brasica juncea L.)

Abstract

An investigation was undertaken to study the correlation and path coefficient analysis of twelve quantitative traits in 30 Indian mustard (Brassica Juncea L.) germplasm lines. The experimental material was evaluated in a randomized block design with three replications. Correlation study revealed that harvest index and total biological yield per plant exerted high significant positive correlation coefficients with seed yield at both genotypic and phenotypic level. Seed yield is negatively correlated with days to 50 % flowering and days to maturity which promotes early flowering and early maturing genotypes. Path analysis revealed that harvest index showed maximum positive direct effect, followed by total biological yield per plant, days to maturity, siliquae length at the time of maturity and seed yield per plant at both genotypic and phenotypic levels. Based on result it has been concluded that two traits namely harvest index and total biological yield per plant exerted high correlation as well as direct influence on seed yield may be considered for selection and to improve the seed yield of the mustard genotypes.

Comparison of variability in early segregating generations of Indian Mustard [Brassica juncea (L.) Czern & Coss.] crosses

“…The correlations and the direct and indirect effects of the different attributing characters on seed yield per plant varied from F 2 to F 3 , indicating the segregation of the genes controlling the characters. Similar findings were reported by Tahira et al (2014), Kumar et al (2016) and Kumar et al (2018). A higher residual effect in both F 2 and F 3 generations indicated that the characters included in the present study were not able to account for all the variability observed and more characters were needed to be included for better conclusions.…”

Effect of High Temperature on Growth and Yield Attributes of Indian Mustard Genotypes Due to Late Sown

“…The findings of this study revealed that the genotypes having higher biological yield may be having the potential for greater transfer of their photosynthate from source to sink site under rising temperature caused due to late sowing stress. Similar results of genotypic variations have been reported by Kumar [31,9].…”

“…It is evident from the above findings that those mustard genotypes having a higher value of HI % seem to be more efficient in transferring their photosynthate in a balanced manner to developing seed under increasing temperature during the reproductive phase under late sowing stress. Similar results for harvest index in mustard were also reported byLallu [15,31].…”