{"title":"Karyomorphological studies in two species of genus Strychnos L. significant in ethno-pharmacological aspects","authors":"Aswathy Ravindran, B. Das","doi":"10.31742/ijgpb.82.1.19","DOIUrl":null,"url":null,"abstract":"In the present investigation, Strychnos nux vomica L. and Strychnos wallichiana Steud. ex A. DC. have been selected for karyotypic investigation to strengthen genetic relationships. Chromosome number recorded in S.nux vomica is 2n=32 while in S. wallichianais 2n=40. In both species A-type, B-type and C-type chromosomes were observed with 28 metacentric chromosomes and 4 sub-metacentric in S. nux vomica and 38 metacentric and 2 sub-metacentric chromosomes in S. wallichiana. The total form per cent (T.F %), Dispersion Index (DI), Asymmetry index (AI) depict the symmetric karyotype of chromosomes which represents their primitive level in the family.","PeriodicalId":13321,"journal":{"name":"Indian Journal of Genetics and Plant Breeding","volume":" ","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2022-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Genetics and Plant Breeding","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.31742/ijgpb.82.1.19","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
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Abstract
In the present investigation, Strychnos nux vomica L. and Strychnos wallichiana Steud. ex A. DC. have been selected for karyotypic investigation to strengthen genetic relationships. Chromosome number recorded in S.nux vomica is 2n=32 while in S. wallichianais 2n=40. In both species A-type, B-type and C-type chromosomes were observed with 28 metacentric chromosomes and 4 sub-metacentric in S. nux vomica and 38 metacentric and 2 sub-metacentric chromosomes in S. wallichiana. The total form per cent (T.F %), Dispersion Index (DI), Asymmetry index (AI) depict the symmetric karyotype of chromosomes which represents their primitive level in the family.
期刊介绍：
Advance the cause of genetics and plant breeding and to encourage and promote study and research in these disciplines in the service of agriculture; to disseminate the knowledge of genetics and plant breeding; provide facilities for association and conference among students of genetics and plant breeding and for encouragement of close relationship between them and those in the related sciences; advocate policies in the interest of the nation in the field of genetics and plant breeding, and facilitate international cooperation in the field of genetics and plant breeding.
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