Correlation and Path Analysis Studies for Growth and Yield Contributing Traits in Indian Mustard (Brassica junceaL.)

Abstract

A study was undertaken at West Bengal, India with Indian mustard var. varuna, during winter season of 2010-11 and 2011-12 in a split-plot design with three levels of irrigation (main-plots) and four levels of sulphur (sub-plots) with three replications. Experimental results revealed that application of two irrigations at 30 and 60 DAS, along with 45 kg S ha -1 influenced growth attributes and seed yield significantly.Further increase in S level upto 60 kg ha -1 although gave higher seed yield but the difference was non-significant. Highest consumptive use of water was recorded with two irrigations (at 30 and 60 DAS) while it was increased slightly with increase in S levels from 0 to 60 kg ha -1 . Sulphur @ 45 kg ha -1 recorded highest water use efficiency at all irrigation levels. Irrigation (twice at 30 and 60 DAS) fetched higher net return over single irrigation. At all irrigation levels, 45 kg S ha -1 recorded the highest net return and B:C ratio. Seed yield showed positive significant correlation with all the independent variables and CGR revealed the highest degree of correlation followed by RGR, NAR, plant height and number of primary branches plant -1 . It is obvious from path analysis that RGR had highest direct and positive effect on seed yield followed by CGR and number of primary branches plant -1 . Thus CGR, RGR and NAR were under genotypic control and this positive correlation toward seed yield would be favourable to breeder for genetic improvement of Indian mustard.

Effect of sulfur fertilization, varieties and irrigation scheduling on growth, yield, and heat utilization efficiency of indian mustard (Brassica JunceaL.)

“…Sulfur application might have increased metabolic activity and photosynthetic rate due to its engagement in chlorophyll formation, enzyme activation as well as primary and secondary metabolism. The results are also substantiated by the findings reported by Ray et al (2014), Singh et al (2017) and Yadav and Dhanai (2018).…”

Phenotypic Evaluation of Genetic Diversity of Diverse Indian Mustard (Brassica Juncea L. Czern and Coss) Genotypes using Correlation and Path Analysis

“…are used for studying genetic similarities or distances (Zhang et al, 2007). (Gupta et al,1991), (Vaishnava et al, 2006), (Ray et al, 2014) and (Singh et al, 2010) using D2 analysis classified 48,50,30 and 33 genotypes, respectively, for seed yield and its important component traits in Indian mustard. Hu et al, 2007 assessed genetic diversity of B. napus germplasms from China and Europe by using agronomically important traits.…”

Evaluation of rapeseed-mustard cultivars under late sown condition in coastal ecosystem of West Bengal

“…Hence, it is a challenge to identify a suitable cultivar of rapeseedmustard crop that could perform well under delayed sowing (beyond November after harvesting of kharif rice) in coastal saline zone of West Bengal, particularly under assured irrigation and NPK fertilization. Seed yield of rapeseed-mustard, a complex dependent character, is contributed by a number of component characters (Ray et al, 2014b). Thus, direct selection of a cultivar for seed yield is often not very effective rather indirect selection based on some associated traits may be useful (Hassan et al, 2013).…”