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Molecular characterization of multicut forage sorghum [Sorghum bicolor (L.) moench] using SSR markers

KrishiKosh

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Title Molecular characterization of multicut forage sorghum [Sorghum bicolor (L.) moench] using SSR markers
 
Creator Yadav, Anita
 
Contributor Boora, K.S.
 
Subject Sorghum, Genetics, dna, Polymorphism, Genotypes, Alleles, Biological phenomena, Genetic structures, Locus, Crops
Sorghum, Genetics, dna, Polymorphism, Genotypes, Alleles, Biological phenomena, Genetic structures, Locus, Crops
 
Description Sorghum is a diverse genus belonging to the tribe Andropogoneae and family Poaceae.
(2n=20). The present study was undertaken to analyze genetic variability among F2 progenies of a cross
between HJ541 (single cut variety) and SSG59-3 (multicut variety) by using SSR markers. Fifty SSR
primers were used to study genetic variability among 32 F2 progenies along with the parents. A total of
78 amplified DNA products were observed out of which 26 were monomorphic and 52 were
polymorphic. Average percentage polymorphism across the 32 progenies was 46.2%. The number of
amplified DNA bands varied from 2 to 7 with an average of 1.81 bands per primer. The size of
amplified alleles ranged from 110- 1000 bp respectively. Analysis of data grouped the 32 progenies
into two major clusters. Cluster I constitutes of 29 F2 progenies and the parent SSG 59-3 whereas
Cluster II had the remaining F2 progenies and parent HJ 541. Genetic similarity based on ‘Simqual’ l
sub programme among various progenies ranged from 0.45 to 0.81 indicating moderate genetic
variability among F2 population along with their parents. The average similarity between 32 progenies
was found to be 0.66. Parental varieties were found to be most diverse followed by F2 progenies G18
and G7 with a coefficient of 0.45. F2 progeny G12 and G13, G9 and G11, G9 and G30, G29 and G30
were most similar with 0.81 coefficient of similarity. Two and three dimensional principle component
analysis (PCA) also gives similar clustering of 32 F2 progenies.
The highly diverse F2 progenies may be used for breeding of multicut varieties of sorghum in
order to meet ever increasing demand of green fodder for the livestock. SSR would provide adequate
coverage of genome for germplasm identification and pedigree validation.
Sorghum is a diverse genus belonging to the tribe Andropogoneae and family Poaceae.
(2n=20). The present study was undertaken to analyze genetic variability among F2 progenies of a cross
between HJ541 (single cut variety) and SSG59-3 (multicut variety) by using SSR markers. Fifty SSR
primers were used to study genetic variability among 32 F2 progenies along with the parents. A total of
78 amplified DNA products were observed out of which 26 were monomorphic and 52 were
polymorphic. Average percentage polymorphism across the 32 progenies was 46.2%. The number of
amplified DNA bands varied from 2 to 7 with an average of 1.81 bands per primer. The size of
amplified alleles ranged from 110- 1000 bp respectively. Analysis of data grouped the 32 progenies
into two major clusters. Cluster I constitutes of 29 F2 progenies and the parent SSG 59-3 whereas
Cluster II had the remaining F2 progenies and parent HJ 541. Genetic similarity based on ‘Simqual’ l
sub programme among various progenies ranged from 0.45 to 0.81 indicating moderate genetic
variability among F2 population along with their parents. The average similarity between 32 progenies
was found to be 0.66. Parental varieties were found to be most diverse followed by F2 progenies G18
and G7 with a coefficient of 0.45. F2 progeny G12 and G13, G9 and G11, G9 and G30, G29 and G30
were most similar with 0.81 coefficient of similarity. Two and three dimensional principle component
analysis (PCA) also gives similar clustering of 32 F2 progenies.
The highly diverse F2 progenies may be used for breeding of multicut varieties of sorghum in
order to meet ever increasing demand of green fodder for the livestock. SSR would provide adequate
coverage of genome for germplasm identification and pedigree validation.
 
Date 2016-10-29T08:43:04Z
2016-10-29T08:43:04Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82871
 
Language en
 
Format application/pdf
 
Publisher CCSHAU