Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions

Rice is one of the most important food crops and a primary source of calories for more than half of the world’s population. Nowadays, there is increasing demand for the coloured rice due to growing knowledge of health benefits. Coloured rice is one of the alternative healthy foods since it contains...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohd Sarif, Hamidah
Format:	Thesis
Language:	English
Published:	2019
Subjects:	Rice - Genetics Phenols
Online Access:	http://psasir.upm.edu.my/id/eprint/98478/1/FP%202020%2046%20IR.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.98478
record_format	uketd_dc
spelling	my-upm-ir.984782022-08-26T00:50:30Z Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions 2019-03 Mohd Sarif, Hamidah Rice is one of the most important food crops and a primary source of calories for more than half of the world’s population. Nowadays, there is increasing demand for the coloured rice due to growing knowledge of health benefits. Coloured rice is one of the alternative healthy foods since it contains high antioxidant, phenolic compounds, and other nutrients that have significant benefit on human health. In this study, genetic diversity was evaluated among 32 coloured rice accessions. Rice accessions were obtained from Rice Genebank, Malaysian Agricultural Research and Development Institute (MARDI) and were planted at the field for multiplications, morphological and yield components assessment. The evaluation was carried out in a randomized complete block design (RCBD) with three replications. The analysis of variance results showed that all the agro-morphological characteristics, yield and yield components, grain quality, and antioxidant properties were significant differences among the accessions. Correlation analysis revealed that phenolic content positively high correlated with plant height, leaf area, heading days, number of tillers, thousand grain weight, dehulled grain width, amylose content and gel consistency. Most of the characteristics studied had high heritability values (>70%) except for numbers of tillers (40.72%), alkaline spreading value (40.68%), broken rice percentage (22.98%) and head rice recovery (7.74%). These indicated that the characters with high heritability values (>70%) were highly influenced by genetic factor than environmental factors in their phenotypic expression. The coloured rice accessions had broad genetic divergence and high heritability values will be given high priority in the selection for successful improvement of rice grain quality. Correlation analysis showed that phenolic content was positively significant correlated with all the morphological traits and yield components. The total antioxidant capacities (TAC) for all the coloured rice accessions were ranged from 12.10 to 34.90 μM/100g total equivalent antioxidant capacity (TEAC). The highest of TAC content was identified in accession DNJ 128 (34.90 μM/100g TEAC). For molecular diversity study, out of 59 simple sequence repeats (SSR) markers used, 34 markers showed polymorphism among the coloured rice accessions. The polymorphic information content (PIC) ranged from 0.86 (RM137) to 0.97 (RM400) with an average 0.92 which indicated that SSR markers used in this study were effective to reveal the polymorphic among the rice accessions. Cluster analysis using unweighted pair group method with arithmetic mean (UPGMA) showed that all the coloured rice accessions were grouped into four clusters. From this study, six coloured rice accessions namely, YTM 15, Pulut Merah 3, Padi Randau, Ringan Bawang, DNJ 128 and DV 107 produced high yield with good grain quality and high antioxidant capacity were selected for future rice breeding program. Rice - Genetics Phenols 2019-03 Thesis http://psasir.upm.edu.my/id/eprint/98478/ http://psasir.upm.edu.my/id/eprint/98478/1/FP%202020%2046%20IR.pdf text en public masters Universiti Putra Malaysia Rice - Genetics Phenols Yusop, Mohd Rafii
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Yusop, Mohd Rafii
topic	Rice - Genetics Phenols
spellingShingle	Rice - Genetics Phenols Mohd Sarif, Hamidah Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
description	Rice is one of the most important food crops and a primary source of calories for more than half of the world’s population. Nowadays, there is increasing demand for the coloured rice due to growing knowledge of health benefits. Coloured rice is one of the alternative healthy foods since it contains high antioxidant, phenolic compounds, and other nutrients that have significant benefit on human health. In this study, genetic diversity was evaluated among 32 coloured rice accessions. Rice accessions were obtained from Rice Genebank, Malaysian Agricultural Research and Development Institute (MARDI) and were planted at the field for multiplications, morphological and yield components assessment. The evaluation was carried out in a randomized complete block design (RCBD) with three replications. The analysis of variance results showed that all the agro-morphological characteristics, yield and yield components, grain quality, and antioxidant properties were significant differences among the accessions. Correlation analysis revealed that phenolic content positively high correlated with plant height, leaf area, heading days, number of tillers, thousand grain weight, dehulled grain width, amylose content and gel consistency. Most of the characteristics studied had high heritability values (>70%) except for numbers of tillers (40.72%), alkaline spreading value (40.68%), broken rice percentage (22.98%) and head rice recovery (7.74%). These indicated that the characters with high heritability values (>70%) were highly influenced by genetic factor than environmental factors in their phenotypic expression. The coloured rice accessions had broad genetic divergence and high heritability values will be given high priority in the selection for successful improvement of rice grain quality. Correlation analysis showed that phenolic content was positively significant correlated with all the morphological traits and yield components. The total antioxidant capacities (TAC) for all the coloured rice accessions were ranged from 12.10 to 34.90 μM/100g total equivalent antioxidant capacity (TEAC). The highest of TAC content was identified in accession DNJ 128 (34.90 μM/100g TEAC). For molecular diversity study, out of 59 simple sequence repeats (SSR) markers used, 34 markers showed polymorphism among the coloured rice accessions. The polymorphic information content (PIC) ranged from 0.86 (RM137) to 0.97 (RM400) with an average 0.92 which indicated that SSR markers used in this study were effective to reveal the polymorphic among the rice accessions. Cluster analysis using unweighted pair group method with arithmetic mean (UPGMA) showed that all the coloured rice accessions were grouped into four clusters. From this study, six coloured rice accessions namely, YTM 15, Pulut Merah 3, Padi Randau, Ringan Bawang, DNJ 128 and DV 107 produced high yield with good grain quality and high antioxidant capacity were selected for future rice breeding program.
format	Thesis
qualification_level	Master's degree
author	Mohd Sarif, Hamidah
author_facet	Mohd Sarif, Hamidah
author_sort	Mohd Sarif, Hamidah
title	Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
title_short	Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
title_full	Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
title_fullStr	Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
title_full_unstemmed	Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
title_sort	genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions
granting_institution	Universiti Putra Malaysia
publishDate	2019
url	http://psasir.upm.edu.my/id/eprint/98478/1/FP%202020%2046%20IR.pdf
_version_	1747813872717266944

Genetic variability and relationship of phenolic contents, antioxidant capacity and grain yield components of selected coloured rice accessions

Similar Items