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Patil Suvarna,Bashasab Fakrudin,Vijaykumar Vijaykumar,Basavanagoud Basavanagoud,Kuruvinashetti Mahaling S,Patil Basavaraj V Korean Society of Applied Entomology 2006 Journal of Asia-Pacific Entomology Vol.9 No.3
The genetic relatedness among Helicoverpa armigera ($H\"{u}bner$) occurring on different host plants prevailing in South India was studied using PCR-RAPD. Genomic DNA was isolated individually from five larvae collected from each of 10 different host plants (except in okra). PCR-RAPD analysis was carried out using a set of 20 random primers which had produced repeatable banding patterns from a original set of 60 primers. A set of 155 amplicon levels were available for analysis, of which 154 were polymorphic. An average of 7.75 bands per primer was recorded. Similarity coefficients based on the frequency of band sharing among host strains varied from 0.25 in cotton and sunflower to 0.72 in groundnut. Clustering analysis on the basis of the PCR-RAPD-generating band sharing indicated that most of the individuals occurring on niger, safflower, green gram, abutilon and lagasca clustered together, indicating greater genetic similarity among themselves, than those occurring on other crops. Furthermore, the pattern of genetic variation in the individuals collected from niger, safflower, green gram, groundnut, abutilon and lagasca was seem to be largely host-dependent.
Suvarna Patil,Fakrudin Bashasab,Vijaykumar,Basavanagoud,Mahaling S Kuruvinashetti,Basavaraj V Patil 한국응용곤충학회 2006 Journal of Asia-Pacific Entomology Vol.9 No.3
The genetic relatedness among Helicoverpa armigera (Hübner) occurring on different host plants prevailing in South India was studied using PCR- RAPD. Genomic DNA was isolated individually from five larvae collected from each of 10 different host plants (except in okra). PCR-RAPD analysis was carried out using a set of 20 random primers which had produced repeatable banding patterns from a original set of 60 primers. A set of 155 amplicon levels were available for analysis, of which 154 were polymorphic. An average of 7.75 bands per primer was recorded. Similarity coefficients based on the frequency of band sharing among host strains varied from 0.25 in cotton and sunflower to 0.72 in groundnut. Clustering analysis on the basis of the PCR-RAPD-generating band sharing indicated that most of the individuals occurring on niger, safflower, green gram, abutilon and lagasca clustered together, indicating greater genetic similarity among themselves, than those occurring on other crops. Furthermore, the pattern of genetic variation in the individuals collected from niger, safflower, green gram, groundnut, abutilon and lagasca was seem to be largely host-dependent.
Yemane Girma,Dadakhalandar Doddamani,Rajkumar,Sadik Ahmed Wasik Ahmed,Sheweta Gujar,Suvarna Patil,Gurusiddesh Hiremath,Bashasab Fakrudin 한국작물학회 2014 Journal of crop science and biotechnology Vol.17 No.3
Single Nucleotide Polymorphisms (SNPs) are the commonest type of nucleotide variation distributed throughout thegenome and have enormous potential to saturate genetic maps. However, their identification is constrained by the huge investmentrequired for their detection. In this study, we used publicly available EST (Expressed Sequence Tag) sequences to identifySNPs in Sorghum bicolor. A total of 12,421 putative SNPs were identified from 2,921 contiguous transcripts leading to anaverage SNP interval of one putative SNP for every 275.26 bp. The proportion of transition type mutations (0.598) was largerthan transversion types conforming to biological expectations. In order to demonstrate the utility of the SNPs for developmentof markers with relatively cheap assays, we experimentally validated SNPs using Single Strand Conformation Polymorphism(SSCP) technique in sorghum accessions, which are used as parents for development mapping populations. Genotyping theseparents of mapping populations with SSCP markers showed up to 33% polymorphism in the markers suggesting that the SNPscan be used as potential resource for S. bicolor crop improvement programs