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Cytogenetical studies inDatura

I. Cytology of the parents and of the F1 hybrid betweendatura fastuosa anddatura sp.
  • T. S. Raghavan
  • A. R. Srinivasan
Article

Summary

Two species of a localDatura were crossed and the hybrid compared with the parents.

The somatic chromosome complements of the parents were analysed and compared with that of the hybrid.

Meiosis in the parents and the hybrid is also described. Chromosomal pairing in the hybrid is discussed as throwing light upon the relationship between the parents.

Keywords

Chromosome Number Chromosomal Pairing Cytogenetical Study Introduction Plant Hybrid Origin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature Cited

  1. Babcock, E. B., and Emsweller, S. L. “Meiosis in certain interspecific hybrids inCrepis and its bearing on taxonomical relationship,”Univ. Calif, publ. Agri. Sci., 1936,6, 325.Google Scholar
  2. Bergner, A. D., Avery, A. G., and Blakeslee, A. F. “Chromosome deficiencies inDatura stramonium induced by colchicine treatment,”Amer. Jour. Bot., 1940,27, 676.CrossRefGoogle Scholar
  3. Blakeslee, A. F. “Variations inDatura due to changes in chromosome numbers,”Amer. Nat., 1922, 56.Google Scholar
  4. - and co-workers “Datura investigations,”Report of the Director of the Department of Genet, of Carnegie Institution of Washington, 1936, 36.Google Scholar
  5. Clausen, J. “Cytogenetic and taxonomic investigations inMelanium violets,”Heredit. Lund., 1931,15, 219.Google Scholar
  6. Goodspeed, T. H. “Nicotiana phylesis in the light of chromosome number, morphology and behaviour,”Univ. Calif. Publ. Bot., 1934,17, 369.Google Scholar
  7. Müntzing, A. “Chromosome behaviour inNicotiana hybrids,”Heredit. Lund., 1935,20, 251.CrossRefGoogle Scholar
  8. Nandi, H. K. “Cytological investigations of the rice varieties,”Cytologia, 1921,8, 277.Google Scholar
  9. Navashin, M. “Chromosome alterations caused by hybridization and their bearing on certain genetical problems,” —, 1934,5, 169.Google Scholar
  10. Percival, J. “Cytological studies of some hybrids ofAegilops sp. x wheat and of some hybrids between different species ofAegilops,”Jour. Genet., 1930,22, 201.CrossRefGoogle Scholar
  11. Raghavan, T. S., and Srinivasan, A. R. “Cytogenetical studies inNicotiana. I. Cytology ofN. tabacum var. macrophylla,N. glutinosa and the F1 hybrid between them,”Jour. Ind. Bot. Soc., 1941a,20, 307.Google Scholar
  12. — “Cytogenetical studies inNicotiana. II. Morphological Features ofN. glutinosa and the hybrid betweenN. glutinosa andN, tabacumProc. Ind. Acad. Sci., 1941,b,14, 35.Google Scholar
  13. — “Studies in the Rubiaceæ. II.Spermacoce hispida, Guettarda speciosa and some cyto-morphological considerations,” —, 1941c,14, 412.Google Scholar
  14. — “Cyto-morphological features ofPortulaca tuberosa Roxb.,” —, 1941d,14, 472.Google Scholar
  15. — and Venkatasubban, K. R. “Studies in the South Indian Chillies. I. A description of the varieties, chromosome numbers and the cytology of some X-rayed derivatives inCapsicum annum,” —, 1940,12, 29.Google Scholar
  16. — “Contribution to the cytology ofTridax procumbens,” —, 1941,13, 85.Google Scholar
  17. Ramanujam, S. “Cytogenetical studies in Oryzes. II. Cytological behaviour of an autotriploid in rice,”Jour. Gen., 1937,35, 183.CrossRefGoogle Scholar
  18. Satina, S., Blakeslee, A. F., and Avery, A. G. “Balanced and unbalanced haploids inDatura,”Jour, Here., 1937,27, 193.Google Scholar
  19. — “Demonstration of three germ layers in the shoot apex ofDatura by means of induced polyploidy in periclinal chimeras,”Amer. Jout., Bot. 1941,27, 895.CrossRefGoogle Scholar
  20. Sturt Gager, G., and Blakeslee, A. F. “Chromosome and gene mutations inDatura, following exposure to Radium rays,”Nat. Acad. Sci., 1927,13, 75.CrossRefGoogle Scholar
  21. Whitaker, W. T., and Thompson, C. R. “Cytological studies inLactuca,”Bull. Torr. Bot. Club, 194168, 388.CrossRefGoogle Scholar
  22. Webber, J. M. “Interspecific hybridization inGossypium and the meiotic behaviour of the F1 plants,”Jour. Agri. Res., 1935,51, 1047.Google Scholar

Copyright information

© Indian Academy of Sciences 1942

Authors and Affiliations

  • T. S. Raghavan
  • A. R. Srinivasan

There are no affiliations available

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