Summary
Three populations of oats, each with 790 lines, were derived from CI 7555: (a) one (M population) consisted of M2-derived lines obtained from EMS treatment of naked seeds, (b) one (O population) consisted of F2-derived lines from crosses of M1 with check plants, and (c) one (C population) consisted of check lines.
About 98% of the grain yield (GYD) variation in each population was due to variation in growth rate (GR) and harvest index (HI).
There was greater variation for both GR and HI in M and O than in the C population, showing that mutations were induced for both traits. Generally, mutations for these two traits were for reduced expression: high HI and GR are desired in a practical oat breeding program, so most induced mutations were deleterious.
Mutation breeding, either with direct selection or outerossing to release the induced mutations, does not appear to be a desirable method for improving GR or HI of oats.
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References
Brock, R. D. 1965. Induced mutations affecting quantitative characters. Radiat Bot. 5 (Suppl.): 451–464.
Frey, K. J. & T. Horner 1957. Heritability in standard units. Agron. J. 49: 59–62.
Grey, K. J. 1976. Plant breeding in the seventies: Useful genes from wild plant species. Egypt. J. Genet. Cytol. 5: 462–482.
Grey, K. J., J. A. Browning & R. L. Grindland 1971. Registration of Multiline M68. Multiline M69, and Multiline M70 oat cultivars. Crop Sci. 11: 940.
Jalani, B. S. & K. J. Frey, 1979. Variation in growth rate and harvest index of oats (Avena sativa L.) following selfing and outcrossing of M1 plants. In preparation.
Rosielle, A. A. & K. J. Frey 1975. Application of restricted selection indices for grain yield improvement in oats. Crop Sci. 15: 544–547.
Takeda, K. & K. J. Frey 1976. Contributions of vegetative growth rate and harvest index to grain yield in progenies from Avena sativa × A. sterilis crosses. Crop Sci. 16: 817–821.
Takeda, K. & K. J. Frey 1977. Growth rate inheritance and associations with other traits in backcross populations of Avena sativa x A. sterilis. Euphytica 26: 309–317.
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Journal Paper No. J-9308 of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa 50011. Project No. 1752. This work was supported in part by the International Atomic Energy Agency. Vienna. Austria, in the form of a fellowship for the senior author.
National University of Malaysia, Kuala Lumpur, Malaysia (formerly Visiting assistant Professor in Agronomy, Iowa State University).
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Jalani, B.S., Frey, K.J. & Bailey, T.B. Contribution of growth rate and harvest index to grain yield of oats (Avena sativa L.) following selfing and outcrossing of M1 plants. Euphytica 28, 219–225 (1979). https://doi.org/10.1007/BF00056578
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DOI: https://doi.org/10.1007/BF00056578