Identification QTLs and Effective Factors on Grain Appearance Quality in Rice

Authors(4) :-Hossein Nohtani, R. Amirifahliani, B.A. Fakheri, A. Masomiasl

Rice (Oryza sativa L.), a staple cereal crop, feeds more than half of the world’s population. Improvement of rice yield and grain quality is the major objective of rice breeding worldwide. Grain quality primarily includes grain appearance, milling, eating and cooking and nutrition qualities. Grain appearance quality mainly includes grain shape and chalkiness. Grain shape, described by grain length (GL), grain width (GW), grain thickness (GT) and grain length to width ratio (GLWR), contributes to grain weight and yield and has a great impact on the market values of rice grain products. Grain chalkiness is an important grain quality related to starch granules in the endosperm. A high percentage of grain chalkiness is a major problem because it diminishes grain quality in rice. Grain size is a major determinant of grain weight, one of the three components (number of panicles per plant, number of grains per panicle and grain weight) of grain yield. In breeding applications, grain size is usually evaluated by grain weight, which is positively correlated with several characters including grain length, grain width and grain thickness . Grain size is also a highly important quality trait in rice. Recently, multiple naturally occurring quantitative trait loci (QTLs) regulating grain length, grain shape and grain width have been cloned and studied.

Authors and Affiliations

Hossein Nohtani
M.Sc. Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Zabol, Iran
R. Amirifahliani
Assistant Professor Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Iran
B.A. Fakheri
Associate Professor Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Zabol, Iran
A. Masomiasl
Assistant Professor Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Iran

Rice, Grain Appearance Quality, Grain Length , Grain width, QTLs

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Publication Details

Published in : Volume 2 | Issue 3 | May-June 2016
Date of Publication : 2017-12-31
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 01-05
Manuscript Number : IJSRST1622121
Publisher : Technoscience Academy

Print ISSN : 2395-6011, Online ISSN : 2395-602X

Cite This Article :

Hossein Nohtani, R. Amirifahliani, B.A. Fakheri, A. Masomiasl, " Identification QTLs and Effective Factors on Grain Appearance Quality in Rice", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 2, Issue 3, pp.01-05, May-June-2016.
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