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Pod numbers and genes in peas

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  • Pod numbers and genes in peas

    I asked because I couldn't find anything about pod numbers at JIC and Mike Ambrose (thank you!) set me straight. Of course it isn't the pod number genes I should have looked for, but the genes that determine flower numbers.

    Here they are:

    http://data.jic.ac.uk/cgi-bin/pgene/default.asp?ID=303
    http://data.jic.ac.uk/cgi-bin/pgene/default.asp?ID=304

    Here is the description of genes Fn/ Fna:
    Increasing number of flowers per inflorescence. Fn Fna is one-flowered; Fn fna and fn Fna two flowered; fn fna three-to several flowered. See also fna.

    An exception is the situation with crown peas where flower/pod numbers are influenced by the fasciation genes fa and fas.

    Mike Ambrose added that with mangetouts peas it may not be such a good idea to select for double podded types, because this could exhaust the plant and shut the growing point down prematurely. .Large mangetouts and their developing seeds are quite a drain on the plants. Double podding could mean low yield.

  • #2
    Great information, thanks Galina.
    Can't remember names, but the 2+ varieties I've got are I think all commercial dwarf varieties.
    I makes sense that there must be a compromise, whether with pod numbers, size or seed content.

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