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Association Analysis of Drought and Yield Related Traits in Upland Land Races of Rice | Tripathy | Rice Genomics and Genetics

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Association Analysis of Drought and Yield Related Traits in Upland Land Races of Rice  

Swapan Kumar Tripathy , Sasmita Dash , Arjun Mohan Prusti , Reshmi RajKR , Mihir Ranjan Mohanty , Somnath Panda , Asit Prasad Dash , Pavitra Mohan Mohapatra , Kartik Chandra Pradhan
Department of Agricultural Biotechnology, College of Agriculture, OUAT, Bhubaneswar, India
Author    Correspondence author
Rice Genomics and Genetics, 2017, Vol. 8, No. 1   doi: 10.5376/rgg.2017.08.0001
Received: 04 Jan., 2017    Accepted: 25 Jan., 2017    Published: 05 Mar., 2017
© 2017 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Tripathy S.K., Dash S., Prusty A.M., Reshmi Raj K.R., Mohanty M.R., Panda S., Dash A.P., Mohapatra P.M., and Pradhan K.C., 2017, Association analysis of drought and yield related traits in upland land races of rice, Rice Genomics and Genetics, 8(1): 1-7 (doi: 10.5376/rgg.2017.08.0001)

Abstract

A set of ninety six land races including a few popular upland rice varieties were assessed to study inter-relationship of drought and yield related traits.  Number of ear bearing tillers/m2, panicle weight and fertility percentage correlated significantly with grain yield/ha and the latter two component traits have very high inter se significant positive correlation under drought stress. Bold kernel type was shown to have significant positive association with grain fertility percentage. Plant height and seed yield under drought stress was negatively associated with leaf rolling score which in turn had inverse relationship with flowering and maturity duration. Thus, drought tolerance in upland rice varieties could be assessed in terms of improved grain filling and such characteristic feature may be associated with genotypes having intermediate plant height, moderate flowering and maturity duration. 

Keywords
Association analysis; Drought; Seed yield and related traits; Rice
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. Swapan Kumar Tripathy
. Sasmita Dash
. Arjun Mohan Prusti
. Reshmi RajKR
. Mihir Ranjan Mohanty
. Somnath Panda
. Asit Prasad Dash
. Pavitra Mohan Mohapatra
. Kartik Chandra Pradhan
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