Summary
Sorghum [Sorghum bicolor (L.) Moench] backcross populations containing 3 to 50% wild germplasm were evaluated in south central India for grain yield and nine related traits. No individual BC0F2- to BC2F2-derived lines were high transgressive segregates for grain yield. Only 1.5% of all BC3F2- or BC4F2-derived lines were transgressive segragates, with 26% higher mean grain yield than their respective recurrent parents. The ten highest-yielding BC2F2- to BC4F2-derived lines per mating having parent CK60B yielded an average of 14% more than CK60B, which was, at the 5% level, a statistically significant difference. However, the increased yield was associated with increased plant height. The highest-yilding lines from RS/R/A2725 x virgatum and RS/R/A2725 x verticilliflorum were an average of 13.5% higher-yielding than RS/R/A2725 (a significant difference) and were equal in plant height. Selection increased BC2 mean grain yields by 6 to 27%. Population mean yield, mean yield of selected lines, and frequency of high-yielding lines were highest in the BC4.
Similar content being viewed by others
References
Bailey T. B., 1977. Selection limits in self-fertilizing populations following the cross of homozygous lines, pp 399–412. In: E. Pollack, O. Kempthorne & T. B. Bailey (Eds), Proc. Int. Conf. Quant. Genet., Iowa State Press, Ames, Iowa.
Baker R. J., 1976. Some thoughts about backcrossing and quantitiative traits. Wheat Newsl. 22: 43–44.
De Wet J. M. J., 1978. Systematics and evolution of Sorghum Sect Sorghum (Graminae). Am. J. Bot. 65: 477–484.
De Wet J. M. J., J. R. Harlan; E. G. Price, 1970. Origin of variability in the Spontanea complex of Sorghum bicolor. Amer. J. Bot. 57: 704–707.
Doggett H., 1965. The development of the cultivated sorghums, pp. 50–69. In: J. Hutchinson (Ed.), Cambridge Univ. Press, London.
Falconer D. S., 1981. Introduction to quantitative genetics. Longman Press, New York.
Frey K. J., 1976. Plant breeding in the seventies: Useful genes from wild plant species. Egypt. J. Genet. Cytol. 5: 460–482.
House L. R., 1980. A guide to sorghum breeding. ICRISAT, Hyderabad, India.
Lawrence P. K. & K. J. Frey, 1976. Backcross variability for grain yield in oat species crosses (Avena sativa L. x A. sterilis L.). Euphytica 24: 77–85.
LeClerg E. L., W. H. Leonard & A. G. Clark, 1962. Field plot technique. Burgess Publ. Co., Mineapolis.
Rodgers, D. M., 1982. Improvement of cultivated barley (Hordeum vulgare) with germplasm introgressed from H. spontaneum. Ph. D. dissertation, Iowa State Univ., Ames, Iowa. Univ. microfilm no. 82-21223.
Author information
Authors and Affiliations
Additional information
Journal paper no. 380, ICRISAT, Patancheru, India; Journal paper no. J-11114, Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa, USA.
Rights and permissions
About this article
Cite this article
Cox, T.S., House, L.R. & Frey, K.J. Potential of wild germplasm for increasing yield of grain sorghum. Euphytica 33, 673–684 (1984). https://doi.org/10.1007/BF00021895
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00021895