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Seeking bigger alder seeds
Stewart Robert Hinsley wrote:
[...] A question may want to ask is whether the seed size is controlled by the maternal genotype (and environmental influences) or the embryo genotype. If the former then you should be looking for the trees with the largest average seed size, rather than the largest seeds independent of source. But your sieving process should preferentially select seeds from trees producing a higher average size of seed, so this may not matter. You still have to worry that the higher average size of seed is caused by the environment and not by the genotype. A very interesting project, though perhaps in danger of being overtaken by genetic modification. Two further questions occur to me. One is, are you selecting not only for seed size, but also for practical harvesting characteristics? We need our grain crops, whether cereal, pulse, or whatever, to stay on the plant when ripe, rather than scattering. The other is, does alder seed /taste/ all right? -- Mike. |
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