Genetic diversity and population structure among 133 elite genotypes of sugarcane (Saccharum spp.) for use as parents in sugarcane varietal improvement

Padmanabhan, T. S.; Hemaprabha, G.

doi:10.1007/s13205-018-1364-2

Cited by 12 publications

(8 citation statements)

References 20 publications

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“…The primer pairs NKS 1 and NKS 8 generated considerably greater percentage of unique alleles. Similar pattern were also studied by Liu et al [11], Santosh et al [12], Khan et al [10], Padmanabhan and Hemaprabha [13], Ali et al [14] and Suman et al [7].…”

Section: Scoring Of Alleles Based On Molecular Markerssupporting

confidence: 83%

“…PIC measures the extent of a marker system to differentiate among genotypes. Similar pattern were also studied by Liu et al [11], Santosh et al [12], Khan et al [10], Padmanabhan and Hemaprabha [13], Ali et al [14], Suman et al [7], Khan et al [16] and Huang et al [17].…”

Section: Evaluation Of Allelic Diversitysupporting

confidence: 82%

“…A similar pattern was also studied by Singh et al [18], who suggested that the classification based on microsatellite markers will be useful for sugarcane breeders to plan crosses for agronomic traits. Padmanabhan and Hemaprabha [13] suggested that less/moderate genetic similarity indicates the availability of sufficient genetic diversity in the experimental material and hence their value in the genetic improvement of sugarcane. Khan et al [10] concluded that SSRs markers are the best tool for the investigation of genetic diversity in sugarcane.…”

Section: Evaluation Of Genetic Similaritymentioning

confidence: 99%

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Molecular Characterization of Early Maturing Sugarcane Clones Using Microsatellite Markers

Singh

Kamat

Kumari

et al. 2022

IJPSS

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Sugarcane is an important cash crop of the entire world including India. It alone contributes to 75% of the worldwide sugar trade. Molecular markers are powerful tools and provide the basis for the estimation of genetic variability to start reasonable breeding program. Microsatellite markers have unique ability to determine the extent of genetic divergence among sugarcane genotypes. The objective of this study was to evaluate the genetic divergence of 12 early maturing sugarcane clones using 11 SSR markers. A total 55 alleles were found during the amplification of the primers out of which 21 alleles were found unique and 34 alleles were shared. The number of shared alleles per locus ranged from two out of five alleles in the case of primer NKS 1 and nine out of ten alleles in NKS 34. Similarly no. of unique alleles per locus ranged from one out of ten alleles in NKS 34, three out of six alleles in NKS 57. The primer pairs NKS 1 and NKS 8 generated considerably greater percentage of unique alleles. The PIC values revealing allelic diversity and frequency among the genotypes varied from 0.034 in case of NKS 48 to 0.778 in case of NKS 9 with an average of 0.549. Pair-wise combinations of CoSe15451 and CoSe15452 showed the highest similarity with the value of similarity coefficient (0.890). The lowest value of similarity coefficient was found to be 0.490 in the pair CoBln15501 and CoSe01421. The dendogram based on SSR marker analysis grouped the 12 sugarcane clones into four clusters which shows the CoSe15451 and CoSe15452 clones had maximum similarity and CoBln15501 and CoSe15452 clones had maximum diversity between each other.

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Section: Scoring Of Alleles Based On Molecular Markerssupporting

confidence: 83%

Section: Evaluation Of Allelic Diversitysupporting

confidence: 82%

Section: Evaluation Of Genetic Similaritymentioning

confidence: 99%

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Molecular Characterization of Early Maturing Sugarcane Clones Using Microsatellite Markers

Singh

Kamat

Kumari

et al. 2022

IJPSS

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“…The use of microorganisms to increase plant resistance to environmental stress conditions is an emerging ecological strategy in agriculture. Therefore, understanding the role of rhizosphere microorganisms under drought stress and their assembly according to their functions can maximize the power of microbial communities to support plant resistance to drought (Padmanabhan and Hemaprabha, 2018;Singh et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Response of Sugarcane Rhizosphere Bacterial Community to Drought Stress

Liu¹,

Zhao²,

Liu³

et al. 2021

Front. Microbiol.

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Sugarcane is an important sugar and energy crop, and its yield is greatly affected by drought. Although a large number of studies have shown that rhizosphere microorganisms can help improve the adaptability of plants to biotic or abiotic stresses, there is a lack of studies on the adaptability of sugarcane rhizosphere microbial communities to host plants. Therefore, we conducted drought stress treatment and normal irrigation treatment on three sugarcane varieties GT21, GT31, and GT42 widely cultivated in Guangxi. Using 16S rDNA sequencing technology to analyze the changes in abundance of the sugarcane rhizosphere bacterial community under different treatments, combined with the determination of soil enzyme activity, soil nutrient content, and sugarcane physiological characteristics, we explored the sugarcane rhizosphere bacterial community response to drought stress. In addition, we used the structural equation model to verify the response path of sugarcane rhizosphere bacteria. The results show that the bacterial community structure in the rhizosphere of sugarcane is stable under normal water conditions. The change in the bacterial community structure under drought stress has a 25.2% correlation with the drought adaptability of sugarcane, but the correlation with drought stress is as high as 42.17%. The changes in abundance of rhizosphere bacteria under drought stress are mainly concentrated in the phylum Rhizobiales and Streptomycetales. This change is directly related to the physiological state of the host plant under drought stress, soil available phosphorus, soil urease and soil acid protease. We investigated the response species of rhizosphere microorganisms and their response pathways under drought stress, providing a scientific basis for rhizosphere microorganisms to assist host plants to improve drought adaptability.

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“…Around 40% of plant species are on the verge of extinction ( Ly et al., 2018 ). Conservation genetics, a new science that uses population genetics principles and methods to biological conservation, aims to save endangered species from extinction ( Hogarth et al., 1997 ; Sarath Padmanabhan and Hemaprabha, 2018 ). Endangered animals are frequently distinguished by tiny, scattered populations and limited gene flow among populations ( Mehmood et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity assessment of Hopea hainanensis in Hainan Island

Zhang

Nizamani

et al. 2022

Front. Plant Sci.

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Hopea hainanensis (Dipterocarpaceae) is an endangered tree species restricted to Hainan Island, China, and a small part of Northern Vietnam. On Hainan Island, it is an important indicator species for tropical forests. The wood of Hopea hainanensis has a very high utilization value in nature since it is compact in structure, hard in texture, not easily deformed after drying, durable, and resistant to sunlight and water. As a result of its high quality, it has been felled and mined by humans without restraint, resulting in a reduction of its population size, severe habitat fragmentation, and a sharp decline in its population. Therefore, its conservation biology needs to be researched urgently. Researchers are currently focusing on the ecological factors and seed germination in the habitat of Hopea hainanensis to determine its endangered status. In the literature, there are no systematic analyses of the endangered mechanism of Hopea hainanensis in terms of genetic diversity. It focuses especially on the systematic genetic diversity of Hopea hainanensis in fragmented habitats. Using single nucleotide polymorphism (SNP) and genotyping-by-sequencing (GBS) technology, 42 samples from seven different cohabitation groups were genotyped. The results showed that the average heterozygosity of the six populations of Hopea hainanensis was 19.77%, which indicated that the genetic diversity of Hopea hainanensis was low. Genetic diversity research is essential for rare and endangered plant protection research. We can find a scientific basis for protecting endangered plants on slope bases by analyzing genetic differences and relationships among populations.

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Genetic diversity and population structure among 133 elite genotypes of sugarcane (Saccharum spp.) for use as parents in sugarcane varietal improvement

Cited by 12 publications

References 20 publications

Molecular Characterization of Early Maturing Sugarcane Clones Using Microsatellite Markers

Molecular Characterization of Early Maturing Sugarcane Clones Using Microsatellite Markers

Response of Sugarcane Rhizosphere Bacterial Community to Drought Stress

Genetic diversity assessment of Hopea hainanensis in Hainan Island

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