Screening for seed size in bulk segregating lentil populations [Lens culinaris]
1986
Erskine, W. | Hamdi, A. (ICARDA, Aleppo (Syria)) | Nofal, A.A.A. (Agricultural Research Centre, Giza (Egypt). Field Crops Research Inst.)
When crosses are made between parents differing in seed size in the development of large-seeded cultivars, the survival of large-seeded segregants is threatened in the bulk breeding method by their selective disadvantage due to a low seed number per unit weight. An experiment was conducted to study the effects of sieving the seed of 27 F2 bulk-harvest segregating lentil populations through a 4 mm diameter sieve on F3 and F4 seeds and plants. The mean differences in the F3 and F4 generations between large and small-seeded fractions, sieved at F2 generation, were 0.77 and 0.92 g/100 seeds, showing a large response to selection for seed size. Seed sieving is a simple and inexpensive technique that is useful in bulk breeding to concentrate large-seeded segregants in0935crosses both with parents differing greatly in seed size and with large-seeded genotypes as the desired objective of the prog
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