Genetic Diversity of Main Inbred Indica Rice Varieties Applied in Guangdong Province as Revealed by Molecular Marker

Huang, Ming; Wu, Yejun; Tao, Xingxing; Liu, Yongzhu; Yang, Gangyi; Chen, Zhiqiang

doi:10.1016/j.rsci.2015.05.001

Cited by 11 publications

(3 citation statements)

References 42 publications

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“…A microsatellite marker having a PIC value of greater than 0.5 is highly informative (Botstein et al 1980). The average PIC values of 0.33 (Singh et al 2004), 0.32 (Ming et al 2015), 0.32 (Gour et al 2017) and 0.26 (Mvuyekure et al 2018), reported previously. Pachauri et al 2013, obtained the mean PIC value of 0.37 in sets of 14 improved varieties and 27 landraces of rice collected from different zones of seven Indian states, which were comparable to the present result.…”

Section: Resultssupporting

confidence: 65%

“…These numbers were quite comparable to 2.0-5.5 alleles per SSR locus (Cho et al 2000) using a different set of rice germplasm. A range of 2-4 alleles per locus was reported (Gour et al 2017; Ming et al 2015; Mvuyekure et al 2018; Verma et al 2019). The average number of alleles was 6.72 (Ravi et al 2003), 4.90 (Zeng 2004), 4.50 (Pervaiz et al 2010), 8.00 (Zhao et al 2009), 4.30 (Islam et al 2011), 7.40 (Shamim et al 2015) and 6.40 (Watanabe et al 2016), which might be due to the use of a more diverse set of rice accessions in their study or due to the use of highly polymorphic markers.…”

Section: Resultsmentioning

confidence: 99%

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Characterization and Heterotic Grouping of Traditional Assam rice (Oryza sativaL.)

Kumar

Sarma

Hazarika

2021

Preprint

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Parents of heterotic hybrids are derived from different heterotic groups with high genetic divergence. Classification of traditional Assam rice germplasm in divergent pools will be advantageous to maximize the heterosis and thereby to ensure food security. In the present investigation, a group of 60 upland rice genotypes were characterized using 53 polymorphic simple sequence repeats (SSR) markers out of 83 molecular markers. The genetic divergence study using unweighted Neighbour-joining (UNJ) method clustered the 60 genotypes into 3 major clusters. The eleven most divergent genotypes identified were crossed in half diallel fashion to determine the mid-parent and better-parent heterosis values for the objective of heterotic grouping. No correlation between heterosis and genetic distance can be attributable to the use of a subset of markers not linked to yield or concerned. In genetic distance based heterotic grouping, the intra-group hybrids were recorded a higher frequency of crosses, grain yield per plant, specific combining ability effect, mid parent heterosis, better parent heterosis and standard parent heterosis value than those of inter-group hybrids. Overall, sn extensive choice of parents with attractive traits constellation leading to increased yield of the hybrids for much better complementation must be stressed along with a substantial hereditary distance for augmentation of yield heterosis.

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Section: Resultssupporting

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Characterization and Heterotic Grouping of Traditional Assam rice (Oryza sativaL.)

Kumar

Sarma

Hazarika

2021

Preprint

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“…It is prominent to explore the genetic variation within a rice population, for the management and utilization of rice germplasm. That could be further used for the improvement and development of new rice varieties [39]. Traditionally the use of morphological or physiological traits were used to evaluate the genetic diversity in plants but this technique was not trustworthy as this procedure was dependent upon the environment due to the gene expression in uenced by it.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of agro-morphological traits, seed characterization and genetic diversity of local rice (Oryza sativa L.) varieties of Pakistan

Fazal

Din

Khan

et al. 2022

Genet Resour Crop Evol

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Background: Broad base genetic diversity is essential for a sustainable crop yield to provide tolerance against biotic and abiotic stresses. In Pakistan, rice is ranked second as a staple food and cultivated under different climatic zones. However, very little is known in terms of rice genetic diversity.Methods and results: Present research were performed to evaluate the genetic diversity among 12 local rice varieties by using 5 SSR markers. Furthermore, agro-morphological parameters and seed characterization of these varieties were studied. The highest plant height (204.3 cm) and panicle length (40.1 cm) were observed for Hans-raj, the maximum number of panicles were recorded for dilrosh-97 (47.3). The maximum number of primary and secondary panicle branches were observed in Ratua-81 (51) and super basmati (62), respectively. Super basmati showed highest number of lled grains (264.3) and total number of grains per panicle (315). The minimum days to maturity was recorded for ratua-81 (140 days), and highest 1000 grains weight was recorded for Ksk-133 (27g). The highest concentration of elements, e.g. zinc (Zn) was observed in Ks-282 (44µg/g), Iron (Fe) in hansraj (190.3µg/g), manganese in bamla sufaid (111.3µg/g), copper (Cu) in hansraj (856.3µg/g), lead (Pb) in super basmati (3883.3µg/g), and nickel (Ni) was found in basmati-385 (314.6ug/g). For the genetic diversity analysis, ve SSR markers were used and a total of 60 alleles were ampli ed with 20% polymorphism, RM28130 showed the highest PIC value (0.60). The maximum number (3) of alleles were produced by RM28089. Based on secondary panicle branches and total number of lled grains, Super basmati showed best panicle architecture and grain yield, which can be used in breeding program to develop high yielding aromatic rice genotypes.Conclusions: The highest number of lled grains and total number of grains per panicle were observed in super basmati, which indicated the potential adaptation. Basmati Hansraj, Ks-282, Super basmati and Basmati surkh-161 were found to be highly rich in micronutrients (iron, zinc, copper, lead and manganese). The maximum genetic distance was observed in basmati-2000 and basmati surkh 161 genotypes.

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Genetic Variation and Association Analysis of the SSR Markers Linked to the Major Drought-Yield QTLs of Rice

et al. 2018

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Drought is one of the major abiotic stresses, which hampers the production of rice worldwide. Informative molecular markers are valuable tools for improving the drought tolerance in various varieties of rice. The present study was conducted to evaluate the informative simple sequence repeat (SSR) markers in a diverse set of rice genotypes. The genetic diversity analyses of the 83 studied rice genotypes were performed using 34 SSR markers closely linked to the major quantitative trait loci (QTLs) of grain yield under drought stress (qDTYs). In general, our results indicated high levels of polymorphism. In addition, we screened these rice genotypes at the reproductive stage under both drought stress and nonstressful conditions. The results of the regression analysis demonstrated a significant relationship between 11 SSR marker alleles and the plant paddy weight under stressful conditions. Under the nonstressful conditions, 16 SSR marker alleles showed a significant correlation with the plant paddy weight. Finally, four markers (RM279, RM231, RM166, and RM231) demonstrated a significant association with the plant paddy weight under both stressful and nonstressful conditions. These informative-associated alleles may be useful for improving the crop yield under both drought stress and nonstressful conditions in breeding programs.

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Genetic Diversity of Main Inbred Indica Rice Varieties Applied in Guangdong Province as Revealed by Molecular Marker

Cited by 11 publications

References 42 publications

Characterization and Heterotic Grouping of Traditional Assam rice (Oryza sativaL.)

Characterization and Heterotic Grouping of Traditional Assam rice (Oryza sativaL.)

Evaluation of agro-morphological traits, seed characterization and genetic diversity of local rice (Oryza sativa L.) varieties of Pakistan

Genetic Variation and Association Analysis of the SSR Markers Linked to the Major Drought-Yield QTLs of Rice

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