Re: Wild CA Grape Seeds
- To: propagation@mallorn.com
- Subject: Re: Wild CA Grape Seeds
- From: L* J* R*
- Date: Tue, 21 Dec 1999 22:10:22 -0800
I have experience, and while I was going to try to post a piece of a chapter
from the book on grapes I'm writing, the main points for actual germination
seem to have been covered. I'll add that germination varies a lot by
species, partly because of the conditions the species have evolved in.
Vitis riparia seeds tend to germinate all at once and quickly - when you
plant stratified riparia, you get just about 100% germination, and usually
the last seedlings come up within a week of the first. With labrusca (by
comparison) you may get from 30% to 70% (at best) germination, and the last
seedllings may emerge 6 weeks after the first. HOWEVER, if you leave the
ungerminated seed in the flat until the next year, (or put the whole flat in
a refrigerator and re-stratify it) you will get more seedlings. Oddly, many
of the second crop are more robust and vigorous than the first ones.
Vinifera has a similar pattern. Rupestris and longii (now called
acerifolia) have a similar pattern to riparia. The trait is inherited as
several of the French Hybrids, which have rupestris in their ancestry,
germinate quickly and give a high percentage of seedlings like the ancestral
species.
T.V. Munson worked out these germination patterns and included them in his
book "Foundations of American Grape Culture" It's an old book, but very
useful, as noted below. I'm just verifying what he found, through my own
grape growing.
Foundations of American Grape Culture by T.V.Munson. Hardcover reprint of
book from 1909. Still an excellent reference book for species, grape
varieties, basic viticultural techniques, more. Cost about $18.50 postpaid.
Order from The Denison Public Library, 300 West Gandy St., Denison,Texas
75020.
-Lon Rombough
Grapes, unusual fruits, writing, more, at http://www.hevanet.com/lonrom
----------
>From: "Marge Talt" <mtalt@clark.net>
>To: <propagation@mallorn.com>
>Subject: Re: Wild CA Grape Seeds
>Date: Tue, Dec 21, 1999, 9:40 PM
>
>Paul,
>
>I was wondering if these were seeds designed to go through a bird gut
>before germinating? Interesting you say the seedlings are weak - the
>thousands that show up in my garden every spring sure aren't! If I
>don't get them pulled while under 6" tall, it is a really tough job
>to get rid of them.
>
>The book ended the bit about grape seeds by noting that propagation
>was generally via cuttings. Should think they would root fairly
>readily, considering how the wild vines root down wherever they touch
>earth.
>
>There must be someone on the list who has experience with grape
>growing...come on, whoever you are, speak up!
>
>Marge Talt, zone 7 Maryland
>mtalt@clark.net
>Editor: Gardening in Shade
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>----------
>> From: Meum71@aol.com
>> Date: Wednesday, December 22, 1999 12:23 AM
>>
>> In a message dated 12/21/1999 11:12:13 PM Central Standard Time,
>> mtalt@clark.net writes:
>>
>> << Germination: Many investigations have shown that gibberellin
>> enrichment enhances the germination of grape seeds. Pal et al.
>> (1976) suggested that gibberellin enrichment improved germination
>and
>> subsequent seedling growth of some grape cultivars. >>
>>
>>
>> this makes sense-many plants that have fleshy fruits might respond
>to
>> gibberellic acid.
>>
>> Gibberiliens are a product of fungi, that act as a hormones to
>plants. The
>> fungi feed on the fleshy pulp of the fruit and release gibberellic
>acid which
>> effects the seeds.
>>
>> Grapes do need a period of cold strat to germinate and they have
>been know to
>> remain in the soil for over eleven years before germination.
>>
>>
>> seedlings tend to be week and slow growers for the first few years,
>Most
>> grapes respond well to propagation by cuttings.
>>
>> We should have someone on the list that knows more about grape
>propagation?
>>
>> Paul.
>>
>>
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