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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(12): 4074-4081
DOI: https://doi.org/10.20546/ijcmas.2017.612.468


Screening of Cold Tolerant Rice Genotypes for Seedling Traits under Low Temperature Regimes
N. Srikanth Rahul1, D. Bhadru2, M. Sreedhar3 and S. Vanisri4
1Deptartment of Genetics and Plant Breeding, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Hyderabad-500 030, Telangana, India
2Seed Research and Technology Center, Rajendranagar, Hyderabad, Telangana, India
3Quality Control Lab, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad-500 030, Telangana, India
4Institute of Biotechnology, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad-500 030, Telangana, India
*Corresponding author
Abstract:

Thirty seven rice genotypes with reported cold tolerance at various phonological stages were used to evaluate for germination and seedling traits in laboratory conditions under three temperature regimes viz., normal (28°C), 8°C and 13°C respectively for identification of genotypes possessing seedling stage cold tolerance. The per se performance in cold environment was found to be related to parameters like germination percent, germination Index, root, shoot and seedling length and seedling vigour. In this context, it is very crucial to have a better understanding of the mechanism of cold tolerance at seedling stage, which is a potential production constraint in rabi. The response of genotypes differed with different low temperatures and was significant indicating the presence of considerable variability for cold tolerance at germination and seedling stage. Certain genotypes performed very well under 13°C and 8°C of temperatures for various seedling traits. However, few genotypes exhibited superior performance under 13°C but not performed well under 8°C of temperatures vice versa. On an overall basis HPR 1068, Himalaya-2216 and Vivek Dhan -82 showed lesser percentage of reduction for seedling vigour index at both temperatures and these genotypes can be used as cold tolerant donors in future breeding programs for development of seedling cold tolerant rice varieties.


Keywords: Rice, Seedling cold tolerance, Rabi.
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How to cite this article:

Srikanth Rahul, N., D. Bhadru, M. Sreedhar and Vanisri, S. 2017. Screening of Cold Tolerant Rice Genotypes for Seedling Traits under Low Temperature Regimes.Int.J.Curr.Microbiol.App.Sci. 6(12): 4074-4081. doi: https://doi.org/10.20546/ijcmas.2017.612.468