Abstract
Interspecific hybrid performance and meiotic chromosome behavior of F1 hybrids were studied to elucidate the genetic relationship between C. tovarii and the other Capsicum species. C. tovarii was hybridized, as a female and a male parent, to C. annuum, C. chinense, C. frutescens, C. chacoense, C. galapogense, C. baccatum, C. praetermissum, C. cardenasii, C. eximium and C. pubescens. When the hybridization of C. baccatum × C. tovarii was performed, F1, F2 and backcross progenies were successfully obtained. In addition, a successful hybridization of C. praetermissum × C. tovarii was also obtained. A cytological investigation of F1 hybrids of C. baccatum × C. tovarii revealed that most meiotic chromosomes paired as bivalents. However, multivalents, chromosome bridges, and chromosome lags were observed. These results suggest that C. baccatum differs from C. tovarii by at least a chromosomal reciprocal translocation. Crosses of C. tovarii to C. chinense and C. frutescens produced plump seeds, but none of the seeds germinated. Hybridizations of C. tovarii to C. pubescens, C. eximium and C. cardenasii did not produce seed. These hybridization results indicate that C. tovarii is genetically more closely related to the C. baccatum complex than to the C. annuum complex or the C. pubescens complex.
Similar content being viewed by others
References
Belletti, P., C. Marzachi, E. Nada and S. Lanteri, 1995. Flow cytometric estimation of nuclear DNA content in different species of Capsicum. EUCARPIA, Ixth meeting on genetics and breeding on Capsicum and eggplant, Budapest (Hungary), August 21–25, 1995, pp. 22–25.
Bosland, P.W., 1993. Breeding for quality in Capsicum. Capsicum and Eggplant Newsletter 12: 25–31.
DeWitt, D. & P.W. Bosland, 1993. The pepper garden. Ten Speed Press, Berkeley, California.
Egawa, Y. & M. Tanaka, 1986. Cytogenetical study of the interspecific hybrid between Capsicum annuum and C. baccatum. Japan J. Breed. 36: 16–21.
Eshbaugh, W.H., 1993. Peppers: history and exploitation of a serendipitous new crop discovery. In: Janick, J. & J.E. Simon (Eds), New Crops, pp. 132–139. John Wiley and Sons, Inc., New York.
Eshbaugh, W.H., P.G. Smith & D.L. Nickrent, 1983. Capsicum tovarii (Solanaceae), a new species of pepper from Peru. Brittonia 35(1): 55–60.
Jensen, R.J., M.J. McLeod & W.H. Eshbaugh, 1979. Numerical taxonomic analyses of allozymic variation in Capsicum (Solanaceae). Taxon 28(4): 315–327.
Lanteri, S. & B. Pickersgill, 1993. Chromosome structural changes in Capsicum annuum L. and C. chinense Jacq. Euphytica 67: 155–160.
McLeod, M.J., S.I. Guttman, W.H. Eshbaugh & R.E. Rayle, 1983. An electrophoretic study of evolution in Capsicum (Solanaceae). Evolution 37(3): 562–574.
McLeod, M.J., W.H. Eshbaugh & S.I. Guttman, 1979. A preliminary biochemical study of the genus Capsicum — Solanaceae. Linnean Society Symposium Series 7: 701–713.
Moscone, E.A., M. Lambrou & F. Ehrendorfer, 1996. Fluorescent chromosome banding in the cultivated species of Capsicum (Solanaceae). Pl. Syst. Evol. 202: 37–63.
Moscone, E.A., M. Lambrou, A.T. Hunziker & F. Ehrendorfer, 1993. Giemsa C-banded karyotypes in Capsicum (Solanaceae). Pl. Syst. Evol. 186: 213–229.
Pickersgill, B., 1988. The genus Capsicum: a multidisciplinary approach to the taxonomy of cultivated and wild plants. Biol. Zentralbl. 107: 381–389.
Pickersgill, B., 1991. Cytogenetics and evolution of Capsicum L. In: T. Tsuchiya & P.K. Gupta (Eds), Chromosome Engineering in Plants: Genetics, Breeding, Evolution, part B, pp. 139–160. Elsevier, Amsterdam.
Swanson, C.P., T. Merz & W.J. Young, 1981. Cytogenetics (the chromosome in division, inheritance, and evolution). second edition. Prentice-Hall, Inc. Englewood Cliffs, New Jersey.
Tong, N. & P.W. Bosland, 1997. Meiotic chromosome study of Capsicum lanceolatum, another 13 chromosome species. Capsicum and Eggplant Newsletter 16: 42–43.
Votava, E., P.W. Bosland & R. Jarret, 1996. RAPD analysis of diversity in bell pepper hybrids. In: D.N. Maynard (Ed.), Proceedings of the National Pepper Conference, pp. 40–41. Naples, Florida.
Zijlstra, S., C. Purimahua & P. Lindhout, 1991. Pollen tube growth in interspecific crosses between Capsicum species. HortScience, 26(5): 585–586.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tong, N., Bosland, P.W. Capsicum tovarii, a new member of the Capsicum baccatum complex. Euphytica 109, 71–77 (1999). https://doi.org/10.1023/A:1003421217077
Issue Date:
DOI: https://doi.org/10.1023/A:1003421217077