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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 (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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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.2021.10(8): 471-493
DOI: https://doi.org/10.20546/ijcmas.2021.1008.058


Identification of Drought Tolerant among MARDI Rice Varieties based on Morpho-Agronomic Traits and Drought Grain Yield QTLs
Site Noorzuraini Binti Abd Rahman1*, Mohd Shahril Firdaus Bin Abd Razak2, Norlida Mohamed Hamim2, Mohd Ramdzan Bin Othman1 and Nur Idayu Binti Abd Rahim1
1MARDI Seberang Perai, Jalan Paya Keladi, 13200 Kepala Batas, Pulau Pinang, Malaysia
2Ibu Pejabat MARDI, Persiaran MARDI-UPM, 43400 Serdang, Selangor, Malaysia
*Corresponding author
Abstract:

The development of drought tolerant rice varieties in Malaysia is slow due to limited number of available donors for breeding program. Evaluation of the genetic resources is crucial to increase availability of the potential drought tolerant donors. This study revealed MR219, MR220, MR253, MR269, MRQ74, MRQ76, SIRAJ297, MARDI284, SEMPADAN303, SEBERNAS307 and MARDI308 showed outstanding performance under drought stress based on tiller number, panicle length, harvest index, % of filled grain and grain yield. The least square means of grain yield showed MR269 was the highest followed with MRQ76, with grain yield reduction difference between the two environments was 46.84% and 54.44%, respectively. The genotypic study observed three MARDI varieties which has more than one QTLs, namely MRQ74 (qDTY3.2 and qDTY11.1), MR253 (qDTY2.3 and qDTY3.2) and MRQ76 (qDTY3.2, qDTY2.3 and qDTY11.1). The dendrogram based on morpho-agronomic traits observed MARDI284, MR269, MRQ746, MR253 and MRQ74 showed similarity with Dular. The dendrogram based on genotypic traits observed MRQ74 and MRQ76 showed similarity with Moroberekan. MRQ76 was identified as a potential drought tolerant variety as showed outstanding performance under drought stress and possessed three different QTLs namely qDTY3.2, qDTY2.3, and qDTY11.1.


Keywords: Rice, morpho-agronomic traits, drought grain yield QTLs, drought tolerant
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How to cite this article:

Site Noorzuraini Binti Abd Rahman, Mohd Shahril Firdaus Bin Abd Razak, Norlida Mohamed Hamim, Mohd Ramdzan Bin Othman and Nur Idayu Binti Abd Rahim. 2021. Identification of Drought Tolerant among MARDI Rice Varieties based on Morpho-Agronomic Traits and Drought Grain Yield QTLs.Int.J.Curr.Microbiol.App.Sci. 10(8): 471-493. doi: https://doi.org/10.20546/ijcmas.2021.1008.058