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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(12): 1746-1760
DOI: https://doi.org/10.20546/ijcmas.2020.912.207


Combining Ability for Nitrogen Use Efficiency in a Diallel Cross of Indian Rapeseed (Brassica rapa L.)
Priyakshee Borpatra Gohain1, Smrita Gogoi1, Kaushik Das2 and Purna K. Barua1*
1Department of Plant Breeding and Genetics, Assam Agricultural University,Jorhat-785013, India
2Department of Crop Physiology, Assam Agricultural University, Jorhat, India
*Corresponding author
Abstract:

Genetic variation, combining ability and character relationships among yield attributing characters including nitrogen use efficiency were evaluated at two levels of N fertilization in a diallel cross of Indian rapeseed. Three toria (TS-38, JT 90-1, TS-67) and three yellow sarson parents (NRCYS 05-03, YSH 401, B9) and their diallel F1s excluding reciprocals were evaluated at 0 and 60 kg N/ha during Rabi 2012-13. Variation between N levels was significant. Genotypes x N interactions were significant for some characters including seed and biological yield per plant. High to moderate genetic variation, high broad sense heritability and high genetic advance were recorded for nitrate reductase activity. Pooled analysis of combining ability exhibited significant variation in gca and sca effects for most of the characters. Interactions of gca and sca with N levels were observed only for a few characters. YSH 401 was the best general combiner for morpho-physiological yield attributes while JT 90-1 was the best general combiner for seed yield per ha. Seed yield per plant was positively correlated with biological yield and NUE at N60. Nitrogen use efficiency was highly heritable with high genetic variation and genetic advance. TS-38 was the best parent for mean performance and gca effect for NUE. Among the crosses, JT 90-1 x YSH 401 and YSH 401 x B9 showed high mean performance and sca effects.


Keywords: Rapeseed, Brassica rapa, Nitrogen use efficiency, Combining ability, Heritability
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How to cite this article:

Priyakshee Borpatra Gohain, Smrita Gogoi, Kaushik Das and Purna K. Barua. 2020. Combining Ability for Nitrogen Use Efficiency in a Diallel Cross of Indian Rapeseed (Brassica rapa L.).Int.J.Curr.Microbiol.App.Sci. 9(12): 1746-1760. doi: https://doi.org/10.20546/ijcmas.2020.912.207