Quantitative Trait Loci for Grain Chalkiness and Endosperm Transparency Detected in Three Recombinant Inbred Line Populations of Indica Rice

DeYong, Mei; Yingguo, Zhu; Yu, Yonghong; Fan, Ye‐Yang; Huang, Detian; Zhuang, Jie‐Yun

doi:10.1016/s2095-3119(13)60199-9

Cited by 29 publications

(47 citation statements)

References 17 publications

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“…Eighty‐two QTL for grain chalkiness have been identified using diverse populations (http://archive.gramene.org) including recombinant inbred line populations derived from intra‐ (Mei et al, 2013) and inter‐subspecific crosses (Lou et al, 2009), F 2:3 populations (Tan et al, 2000), backcross inbred line population (Li et al, 2003), chromosome segment substitution line (CSSL) population (Wan et al, 2005), DH populations (He et al, 1999; Jiang et al, 2005), etc. However, there is rare research on the interaction effect between grain shape and grain chalkiness.…”

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confidence: 99%

“…Improving grain quality in conjunction with increasing grain yield is difficult because increased grain size may reduce grain quality (Song et al, 2007; Sakamoto and Matsuoka, 2008; Li et al, 2014). Several cloned QTL are associated with grain shape, and their physiochemical properties may have pivotal roles in the genetic control of grain chalkiness in rice (Mei et al, 2013). For instance, GW2 , a major QTL for GW and weight, significantly increases the percentage of chalky grain (Song et al, 2007).…”

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confidence: 99%

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Quantitative Trait Loci Mapping for Appearance Quality in Short‐Grain Rice

et al. 2016

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Rice (Oryza sativa L.) appearance quality, as defined by both grain shape and lack of chalkiness, are key breeding goals throughout the world's rice‐producing areas. To understand the genetic effects on rice appearance quality, we grew a double‐haploid (DH) population derived from the cross between two short‐grain rice cultivars, japonica Chunjiang 06 (CJ06) and indica Taichung Native 1 (TN1), in both subtropical Hangzhou and tropical Hainan, China. Transgressive segregation was noted for all measured traits: grain length (GL), grain width (GW), length/width ratio (LW), percentage of kernels with chalk (CK), average chalk size (CS) per kernel, and chalkiness degree (CD, calculated as CK × CS). High positive correlations observed between the chalkiness measures (CK, CS, and CD) with GL and GW indicate that grain shape may have pleiotropic effects on grain chalkiness. Nineteen main‐effect QTL and nine epistatic interaction pairs were detected for grain chalkiness and shape. Quantitative trait loci (QTL) were on all 12 chromosomes and explained 8.0 to 23.6% of the phenotypic variance observed under the two environments. One chalkiness QTL and one shape QTL had main effects in both locations. However, when epistasis was considered, seven of 10 identified main‐effect regions also had epistatic effect on either grain chalkiness or shape. This demonstrated that epistasis plays an important role in determining grain chalkiness, shape, and the association between chalkiness and shape. The identified QTL and epistatic interactions provide further understanding of the genetic basis of grain appearance quality and assistance in improving grain appearance quality of rice through breeding.

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Quantitative Trait Loci Mapping for Appearance Quality in Short‐Grain Rice

et al. 2016

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“…The RIL population was constructed and used previously [28], in which the female parent Teqing (TQ) is an indica inbred variety and restorer line of the three-line hybrid rice, and the male parent includes a number of near isogenic lines in the genetic background of the restorer line IR24.…”

Section: Methodsmentioning

confidence: 99%

“…It spanned 1197.7 cM with larger gaps remaining on chromosomes 1 and 4 [28]. Main-effect QTLs and genotype-by-environment (GE) interactions were determined using QTL Network 2.0 [30], in which the year was treated as an environment factor.…”

Section: Methodsmentioning

confidence: 99%

Detection of QTLs for Yield Heterosis in Rice Using a RIL Population and Its Testcross Population

Yingguo

Huang

Fan

et al. 2016

International Journal of Genomics

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Analysis of the genetic basis of yield heterosis in rice was conducted by quantitative trait locus mapping using a set of 204 recombinant inbred lines (RILs), its testcross population, and mid-parent heterosis dataset (HMP). A total of 39 QTLs for six yield traits were detected, of which three were detected in all the datasets, ten were common to the RIL and testcross populations, six were common to the testcross and HMP, and 17, 2, and 1 were detected for RILs, testcrosses, and HMP, respectively. When a QTL was detected in both the RIL and testcross populations, the difference between TQ and IR24 and that between Zh9A/TQ and Zh9A/IR24 were always in the same direction, providing the potential to increase the yield of hybrids by increasing the yield of parental lines. Genetic action mode of the 39 QTLs was inferred by comparing their performances in RILs, testcrosses, and HMP. The genetic modes were additive for 17 QTLs, dominance for 12 QTLs, and overdominance for 10 QTLs. These results suggest that dominance and overdominance are the most important contributor to yield heterosis in rice, in which the accumulative effects of yield components play an important role.

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“…The quality standards of rice for different uses are different in China, the quality of rice used as grain can be evaluated in terms of appearance quality, processing quality, cooking quality, nutrition and hygienic quality. The chalkiness rate and chalkiness degree seriously affect the appearance quality of rice, which is closely related to the price of rice market, which requires less chalkiness and high transparency [1] [2]. The accessions with high eating quality show an overall trend toward low amylose content and low protein content, if rice with high protein content has inferior palatability [3] [4].…”

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Effects of Meteorological Factors on the Yield and Quality of Special Rice in Different Periods after Anthesis

Xuan¹,

Yang²,

He³

et al. 2019

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In order to investigate the effect of meteorological factors on the yield and quality of special rice during the filling stage, an experiment was conducted with 10 special rice varieties which were planted in three different regions during spring 2017. The results showed that the quality traits and yields from different regions of the same variety were different, which reached up to a significant level in most varieties. Among the quality traits, the grain chalkiness rate and chalkiness degree were the most sensitive to different climatic factors, and changes were found among them in different regions, while minor variation was found between brown rice rate and white rice rate. The parameters that were severely affected by temperature were gel consistency, gelatinization temperature, brown rice rate and yield during the filling stage. The critically affected factors by heat were brown rice rate, protein content, essential amino acid and amylose content while brown rice rate, chalkiness rate and gelatinization temperature were substantially affected by water factors. Grain yield and quality were closely related to meteorological factors on different stages after heading. Our results revealed that yield and quality of special rice were significantly influenced by meteorological factors during the grain filling stage.

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Quantitative Trait Loci for Grain Chalkiness and Endosperm Transparency Detected in Three Recombinant Inbred Line Populations of Indica Rice

Cited by 29 publications

References 17 publications

Quantitative Trait Loci Mapping for Appearance Quality in Short‐Grain Rice

Quantitative Trait Loci Mapping for Appearance Quality in Short‐Grain Rice

Detection of QTLs for Yield Heterosis in Rice Using a RIL Population and Its Testcross Population

Effects of Meteorological Factors on the Yield and Quality of Special Rice in Different Periods after Anthesis

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