ISSN:
1573-5060
Keywords:
Avena sativa
;
oats
;
growth rate
;
harvest index
;
grain yield
;
mutation breeding
;
mutagenesis
;
induced variation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00056578
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