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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 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(10): 1054-1064
DOI: https://doi.org/10.20546/ijcmas.2020.910.126


Heterosis and Combining Ability Studies in Maize (Zea mays L.) for Drought Tolerance, TLB Disease Resistance and Productivity in Northern Dry Tract of Karnataka
Meghashri S. Patil*, B. N. Motagi and R. M. Kachapur
Department of Genetics and Plant Breeding, College of Agriculture, Vijayapur, University of Agricultural Sciences, Dharwad, Karnataka, India
*Corresponding author
Abstract:

Maize being a cross pollinated crop has a higher yield potential compared to other cereals. In the present investigation, 30 full season hybrids (fifteen lines crossed with two testers in Line×Tester) were evaluated for their productivity, drought tolerance and turcicum leaf blight (TLB) disease resistance in the dry tract of Northern Karnataka. The line × tester analysis was carried out to determine the standard heterosis and combining ability in these hybrids with five checks namely Bio 9544, NK-6240 (National checks), CMH08-282 (Zonal check), GPMH-1101 and BRMH-1 (Local checks) under rainfed conditions during kharif 2018 at the Regional Agricultural Research Station, Vijayapur. Among these hybrids, GHVJP5 (GPM-26×CML-451) was found to be better performing for most of the traits followed by GHVJP23 (GPM-686×CML-451); the hybrid GHVJP13 (GPM-225×CML451) was found to be drought tolerant; GHVJP5 and GHVJP12 (GPM119×CM111) were found to be resistant to TLB and GHVJP14 (GPM-225×CM-111) and GHVJP5 were found to be early maturing. These hybrids can be further tested for their proficiency. Among parents, the lines GPM26 and GPM686 were found to be good general combiners for productivity traits. These can be used as parents in the development of superior hybrids.


Keywords: Line×tester, Standard heterosis, Combining ability, TLB, Drought
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How to cite this article:

Meghashri S. Patil, B. N. Motagi and Kachapur, R. M. 2020. Heterosis and Combining Ability Studies in Maize (Zea mays L.) for Drought Tolerance, TLB Disease Resistance and Productivity in Northern Dry Tract of Karnataka.Int.J.Curr.Microbiol.App.Sci. 9(10): 1054-1064. doi: https://doi.org/10.20546/ijcmas.2020.910.126