A comparative study of C-allocation to seed storage compounds among genotypes of Indian mustard under N fertilization

  • Ibandalin MawlongEmail author
  • M. S. Sujith Kumar
  • Basant Kandpal
  • Om Prakash Premi
  • Bishal Gurung
Original Article


A study in twenty four genotypes of Brassica juncea under nitrogen (N) fertilization (80 kg ha−1 N (N80)) showed genotypic variation in oil content. Regression analysis showed oil content to be highly dependent on the availability of seed nitrogen. There was an inverse relationship between oil content and seed meal protein under N treatment in few genotypes only, while others showed opposite effect. This may be due to the distribution of more carbon towards starch synthesis in some genotypes as oil and starch content are negatively correlated (r = − 0.298). The increase in biomass under N80 showed the influence of N on the rate of photosynthesis. N application also influenced total soluble sugar content with a reduction of 8.2–79.8% within the genotypes. This was proportional to the change in biomass, which in turn reflects in the variation of starch, protein and oil content. Based on our observations using the SAS software the twenty four genotypes were clustered into two categories, cluster I showed increased in oil content and cluster II showed decrease in oil content.


Brassica juncea Oil content Starch Soluble sugars Total nitrogen Biomass 



The authors acknowledge Director of ICAR-DRMR for all the facilities provided, plant breeders for sharing their breeding materials and the Indian council of agricultural research for funding the present study (DRMR-B7).

Authors’ contribution

IM and MSSK did the biochemical analysis and prepared the manuscript, BK and OPP carried out the field experiments and guidance. BG did the statistical analysis.

Compliance with ethical standards

Conflict of interest

The authors have no conflict of interest.

Supplementary material

40502_2019_474_MOESM1_ESM.docx (350 kb)
Supplementary material 1 (DOCX 349 kb)


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Copyright information

© Indian Society for Plant Physiology 2019

Authors and Affiliations

  • Ibandalin Mawlong
    • 1
    Email author
  • M. S. Sujith Kumar
    • 1
  • Basant Kandpal
    • 1
    • 2
  • Om Prakash Premi
    • 1
  • Bishal Gurung
    • 3
  1. 1.ICAR-Directorate of Rapeseed-Mustard ResearchBharatpurIndia
  2. 2.ICAR–Research Complex for North Eastern Region, Tripura CentreLembucherraIndia
  3. 3.ICAR-Indian Agricultural Statistics Research InstituteNew DelhiIndia

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