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Thread: Nepenthes seed

  1. #25
    Nepenthes Specialist nepenthes gracilis's Avatar
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    rbjong, uh, seeds do not have a gender, well they do but no one knows that sex the seedling will be until it flowers. Not sure what you're trying to say.

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    am confuse-Seeds,flowers and fruits.

    After surfing thr' the net now i get the whole pix."for seed to be produced ,the pollen of a male flower from another plant must be transfered to female flower of another plant"

    Does same plant produce female and male flowers?
    [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_k_ani_32.gif[/img]

  3. #27
    Nepenthes Specialist nepenthes gracilis's Avatar
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    No, Nepenthes are dioecious, meaning that they are like humans, either male or female.

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    tq neps

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    Biology 101 or should I say Botany?

    Seeds may be male and female, not sure at what stage sex is determined is it in the seed, embryo gets a choice or do the environment play a role in sex determination. If we grow them warmer will they produce more males or opposite? If they grow wetter is it a better chance for females?

    But as for breeding you need a male and a female for seed to happen. Some plants are productive (N. Rokko), others not so (N. Miranda).

    Michael
    Morticia:\"Sic gorgiamus allos subjectatos nunc, 'We would gladly feast on those who try to subdue us.' Not just pretty words. but words to live by!\"

  6. #30

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    Hi,
    since we are all talking about flowers and fruit and seed, I thought I might pop another Question. As we all know, the flowers come up as sprays and there are many individual flowers on each spray/inflorescence. When pollinated, each female flower enlargens and becomes a fruit, with many seed in each fruit. SO heres the question: Are all seeds in the fruit genetically identical? Since one pollen grain ShOuLd (I am not so sure at this point) pollinate 1 female flower?
    Thanks

  7. #31

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    Each seedpod that develops behind a flower may contain many seeds. This is because many grains of pollen become attached to the stigma of the female flower. Each seed is unique. Typically, on one female flower inflorescence, you have hundreds of seed produced, each capable of germinating into a unique seedling. All the seedlings resulting from an individual male pollinating an individual female is called a grex-they are the brothers and sisters of the same parents.

  8. #32

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    Quote Originally Posted by [b
    Quote[/b] (RainforestGuy @ Sep. 05 2005,4:25)]Seeds may be male and female, not sure at what stage sex is determined is it in the seed, embryo gets a choice or do the environment play a role in sex determination. If we grow them warmer will they produce more males or opposite? If they grow wetter is it a better chance for females?
    Heh, talk about tortises... [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_m_32.gif[/img]

    Lam, I don't think each stigma is pollinated by only 1 pollen grain. Many pollen grains enter through pollen tubes in the style of the stigma, each containing 1 gamete. In each gamete the genes combine differently (recombination or whatever), thus producing genetically different offspring/seed. I would think neps needed more variation than 1 type/fruit to tough it out in the wild... [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_m_32.gif[/img]

    Guess what I'm doing in Bio right now... [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_k_ani_32.gif[/img]

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