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What causes steril embryos?
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Posted by michael_in_chicago z5 (My Page) on Fri, Apr 18, 08 at 7:28
| I've been crossing clematis across species, and with certain combinations, always come up with sterile embryos in perfectly mature (seeming) seed coats. Can anyone give me a little botany 101 on what causes this and possible ways to overcome (mentor pollen, gibberellins...)?
Thanks. |
Follow-Up Postings:
RE: What causes sterile embryos?
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| Michael, Certain wide crosses (interspecific or intergeneric) produce seemingly good embryos that don't develop, for a number of reasons, because a growing organism proceeds by chains of different organic reactions with a unique string of intermediates, and a wide hybrid can produce competing chains whose "gears clash". Frequently such embryos can be artificially coaxed to maturity by using the techniques of zygotic embryo culture. This subject was discussed in more detail in the Ways of 'growing' seed from aborted seed pods message thread. MM |
RE: What causes steril embryos?
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| Thanks. I'm looking into that thread. |
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