Summary
Preharvest sprouting resistance is a major breeding criterion in many regions where white wheat (Triticum aestivum L.) is produced. Availability of genetic sources of sprouting resistance should significantly advance this goal. Objectives of the present investigation were to determine heritabilities and genetic variation of sprouting resistance in progeny of six susceptible genotypes and Clark's Cream, a cultivar with excellent sprouting resistance. Sixty-five randomly selected F2:F3 lines from the six parental combinations were evaluated in blocks-within-replication designs at two locations during 1984–85. Falling number, α-amylase activity, and sprouting percentage in simulated rain were usually more favorable in F2:F4 grain than in grain of the susceptible parents and frequently equalled levels in grain of the resistant parent. Broad sense heritability estimates were moderate to high for falling number and α-amylase activity, low to moderate for visual sprouting, and inconsistent for embryo germination in ABA. Phenotypic correlations with sprouting were significant most often for falling number and least often for the agronomic traits, days to heading and kernel weight. We concluded that increased preharvest sprouting resistance is an attainable objective when genetic sources of strong resistance and appropriate selection criteria, such as sprouting after simulated rain, are used.
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Upadhyay, M.P., Paulsen, G.M. Heritabilities and genetic variation for preharvest sprouting in progenies of Clark's Cream white winter wheat. Euphytica 38, 93–100 (1988). https://doi.org/10.1007/BF00024815
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DOI: https://doi.org/10.1007/BF00024815