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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.
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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 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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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.2018.7(5): 3040-3050
DOI: https://doi.org/10.20546/ijcmas.2018.705.355


Studies on Genetic Variability and Low Nitrogen Tolerance of S1 Lines Derived from Local Maize (Zea mays L.) Germplasm
H. Barman1*, N. Sarma Barua1, P. K. Barua1, P. Kalita2, N.K. Chaurasia3 and P. Borah1
1Department of Plant Breeding and Genetics
2Department of Crop Physiology, Assam Agricultural University, Jorhat-785013, Assam, India
3Department of Plant Breeding and Genetics, Bihar Agricultural University, Sabour, 813210, Bhagalpur, Bihar, India
*Corresponding author
Abstract:

Ten S1 lines along with three hybrids were evaluated in randomized block design at Instructional-cum-Research (ICR) Farm of Assam Agricultural University, Jorhat. The aim to study the genetic variability, heritability, genetic advance and low nitrogen tolerance of S1 lines derived from local maize germplasms. The experiment consisted of two trials with the same set of genotypes in two different nitrogen levels, viz., 80 kg N ha-1 and 0 kg N ha-1. Analysis of variance revealed presence of sufficient amount of variation among the genotypes for the traits except ears per plant at both N0 and N80 levels. At both N0 and N80 levels moderate to high estimates of GCV and PCV recorded for grain yield per plant, ear height, number of kernels per row, ear length, days to 50% pollen-shed, 100 KW, NRA and NUE indicated sufficient variability in the set of germplasms. For grain yield and nitrogen use efficiency, the S1 lines viz., MIZ-2 and MEG-11 were identified as promising at N80 level and MEG-11 and TR-1 were identified as promising at N0 level. MIZ-2, AR-1, MIZ-7 and TR-1 had less ASI at N0 level. It indicates that those lines could be tolerant to low N-stress.


Keywords: Maize, Low nitrogen, S1 lines, Local germplasms, Genetic variability
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How to cite this article:

Barman, H., N. Sarma Barua, P.K. Barua, P. Kalita, N.K. Chaurasia and Borah, P. 2018. Studies on Genetic Variability and Low Nitrogen Tolerance of S1 Lines Derived from Local Maize (Zea mays L.) Germplasm.Int.J.Curr.Microbiol.App.Sci. 7(5): 3040-3050. doi: https://doi.org/10.20546/ijcmas.2018.705.355