Functional analysis of starch-synthesis genes in determining rice eating and cooking qualities

He, Yuqing; Han, Yuepeng; Jiang, Lu; Xu, Chenwu; Lü, Jie; Xu, Min

doi:10.1007/s11032-006-5505-7

Cited by 66 publications

(56 citation statements)

References 53 publications

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“…Physicochemical characterization of double haploid rice population also reported on the same classification [36]. The intermediate gel consistency observed in this study could be due to effects of minor genes, for instance, gene interaction between waxy and pullulanase or waxy and BEIII genes [36]. Indian cultivars Sharbati and HBC-19 expressed intermediate GC values of 54, 58 and 53 mm respectively [37].…”

Section: Discussionsupporting

confidence: 71%

“…Amylose polymers leach when the starch granules are heated and they subsequently form networks once the gel cools [33][34][35]. Physicochemical characterization of double haploid rice population also reported on the same classification [36]. The intermediate gel consistency observed in this study could be due to effects of minor genes, for instance, gene interaction between waxy and pullulanase or waxy and BEIII genes [36].…”

Section: Discussionsupporting

confidence: 63%

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Physicochemical Characterization of Selected Rice (Oryza Sativa L.) Genotypes Based on Gel Consistency and Alkali Digestion

Chemutai¹,

Musyoki²,

Kioko³

et al. 2016

Biochem Anal Biochem

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Quality assessment of rice genotypes involves physicochemical and sensory test. A physicochemical test relies on the rice chemical composition, cooking quality, gelatinization temperature and physical properties of cooked rice. The aim of this study was to determine the physicochemical characteristics of selected Kenyan and Tanzanian genotypes based on gel consistency and alkali digestion. Diverse classes of rice exist with different expression levels of gel consistency and alkali digestion. As these traits are major contributors to the eating and cooking quality traits, unscrupulous traders mix both low and high-grade rice hence making enormous profits from their sales. Minitab 17.0 software package was used to determine the means and the standard error of means of the gel consistency physicochemical test results while the alkali digestion values were determined based on the standard evaluation system by International Rice Research Institute. Majority of the genotypes had high alkali digestion. Based on the gel consistency test, the average GC values ranged from 31.50 mm in ITA 310 to 99.5 mm in IR 2793. Genotype BS 217 showed significant difference from Kilombero, IR 64, Kahogo, Saro 5, ITA 310, IR 54, Wahiwahi and BW 196. These results show that physicochemical characterization using the available test procedures can be effectively utilized in analysis of diversity in rice germplasm

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Section: Discussionsupporting

confidence: 71%

Section: Discussionsupporting

confidence: 63%

Physicochemical Characterization of Selected Rice (Oryza Sativa L.) Genotypes Based on Gel Consistency and Alkali Digestion

Chemutai¹,

Musyoki²,

Kioko³

et al. 2016

Biochem Anal Biochem

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show abstract

“…The established correlations support the associations between GC and QTLs mapped to the Wx locus (He et al, 2006;Lanceras et al, 2000;Zheng et al, 2007). Studies have even reported that the gene coding for GC is located within the Wx locus (i.e., Tang et al, 1991;Tian et al, 2005).…”

Section: Gel Consistencysupporting

confidence: 68%

“…Comparisons of amylopectin chain-length distributions between IR36ae, an established BEIIb mutant (Asaoka et al, 1986;Juliano et al, 1990), and its wildtype IR36, and between Goami 2, a mutant variety with functional properties similar to those of BEIIb mutants (Kang et al, 2003), and its wildtype Ilpumbyeo, suggest that BEIIb functions in complex with SSIIa (Cuevas et al 2010b). A number of gene i n t e r a c t i o n s h a v e b e e n r e p o r t e d t o a f f e c t G T i n a n i n t e r -s u b s p e c i f i c d o u b l e d h a p l o i d population (He et al, 2006). However, there is still genetic work to be done to discover the basis of intermediate gelatinisation temperature.…”

Section: Gelatinisation Temperaturementioning

confidence: 99%

Genetic Diversity of Rice Grain Quality

Cuevas¹,

Fitzgerald²

2012

Genetic Diversity in Plants

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“…The associations of starch polymers determines whether the gels are weak or rigid. The gene coding for gel consistency is located within the Wx locus [8,9]. The Wx locus is located in chromosome six in the rice genome and encodes granule-bound starch synthase-I (GBSSI).…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity Studies on Selected Rice (Oryza sativa L.) Genotypes based on Gel Consistency and Alkali Digestion

LR¹,

MA²

2016

J Rice Res

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Knowledge of rice genetic diversity is necessary to ascertain the germplasm conservation and the development of improved rice genotypes with good quality traits through various breeding programs. The aim of this study was to determine the genetic diversity based on gel consistency and alkali digestion among selected Kenyan and Tanzanian genotypes using SSR markers. PowerMarker version 3.25, GenAlEx version 6.41 and DARwin 6.0.12 statistical software were used to carry out data analysis. The number of alleles per locus ranged from 2 to 4 with an average of 2.75 across the 8 markers used. Polymorphic information content (PIC) ranged from 0.5224 (RM577) to 0.1411 (RM85) with an average of 0.3673 observed across all the markers. Gene diversity ranged from 0.5764 (RM577) to 0.1528 (RM85) with an average of 0.4181 with one rare allele was detected at RM577 loci. Pairwise genetic dissimilarity matrix ranged from ranged from 0.9333 to 0.1818 with the least genetic distance being observed between IR 54 and BS 370 while the highest, 0.9333 being between Saro 5 and IR 2793. The unweighted neighbour joining tree clustered the rice genotypes into three major clusters and subsequent sub clusters hence effectively differentiating the Kenyan and Tanzanian genotypes based on gel consistency and alkali digestion. This clustering was complemented with the findings in the principal coordinate analysis. These results show that determination of genetic diversity using SSR markers cam be successfully achieved. In this study RM577 was the best and most informative SSR marker given it showed the highest PIC, gene diversity and allele per locus. In addition, it's the only marker that showed a rare allele at 400 bp.

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Functional analysis of starch-synthesis genes in determining rice eating and cooking qualities

Cited by 66 publications

References 53 publications

Physicochemical Characterization of Selected Rice (Oryza Sativa L.) Genotypes Based on Gel Consistency and Alkali Digestion

Physicochemical Characterization of Selected Rice (Oryza Sativa L.) Genotypes Based on Gel Consistency and Alkali Digestion

Genetic Diversity of Rice Grain Quality

Genetic Diversity Studies on Selected Rice (Oryza sativa L.) Genotypes based on Gel Consistency and Alkali Digestion

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