Olive Grown From Seed

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    The olive is also sometimes grown from seed; to facilitategermination, the oily pericarp is firstsoftened by slight rotting, or soaked in hot water or in an alkaline solution.

    remove seed from untreated fruit. & use only FRESH seed. lightly cover the

    seed soil temp 65-70F & takes 30-120 days to germinate.....

    Plant the whole pit. Make sure that all flesh is thoroughly washed away. You may be

    able to improve germination by soaking or scarification of the pit. I've even read of

    some people scarifying to the extent that the seed is effectively free of the pit.

    Plant the whole pit. Make sure that all flesh is thoroughly washed away. You may be

    able to improve germination by soaking or scarification of the pit. I've even read of

    some people scarifying to the extent that the seed is effectively free of the pit.

    Mechanical or chemical

    scarification is used to treat mechanical dormancy. In scarification, the endocarp can becracked

    mechanically or clipped at the radicle end, with care taken not to damage the embryo.

    Clipping

    just the cotyledonary end of the endocarp does not improve germination. Good

    germination

    results can be obtained using a seed cracking device before subsequent handling

    procedures

    (Martin and others 1986). Pits may be soaked in concentrated sulfuric acid to soften the

    endocarp. Soaking time depends on the thickness of the endocarp; typical soaking times

    for

    >Manzanillo= are between 24 and 30 hours. The acid bath is followed by 1 to 2 hours ofrinsing in

    water (Crisosto and Sutter 1985).

    The pits can be planted directly after the endocarp treatments. Pits should be planted at

    a

    depth about 2 to 3 times their diameter. Seeds planted outdoors in December do not

    germinate

    until the following spring. Pits can also be planted in pots or seedbeds in a greenhouse

    maintained at a 21 to 24 EC daytime temperature. Germination takes up to 3 months. It

    is critical

    that the seeds do not dry out after germination begins. Germination is quicker and moreuniform when treatments to overcome internal

    dormancy are carried out in addition to scarification. The most successful of these

    treatments on

    a commercial scale is stratification. Pits are scarified as described above and then

    soaked in

    water at room temperature for 24 hours. The pits are mixed with moist sand or

    vermiculite and

    then placed in the dark in a controlled environment. The temperature is kept at 15 EC

    for 30days. Stratification is thought to reduce abscisic acid (which inhibits germination)

    within the

    embryo or seedcoat. After stratification, pits can be planted outdoors if the weather issuitable;

    http://en.wikipedia.org/wiki/Germinationhttp://en.wikipedia.org/wiki/Alkalinehttp://en.wikipedia.org/wiki/Germinationhttp://en.wikipedia.org/wiki/Alkaline
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    severe weather can cause losses. Pits can be planted in a greenhouse maintained at a 21

    to 27 EC

    daytime temperature. Bottom heat is necessary. Germination should occur within 1

    month.

    Transplanting seedlings from the greenhouse to the nursery should include steps to

    harden theseedlings, such as partial shade provided by a lathhouse. Adequate irrigation and

    fertilization are

    recommended to ensure continued rapid growth.

    Nursery practice and seedling care. Virtually all olive trees are produced from rooted

    cuttings. Seed handling difficulties, low germination percentage, and slow initial

    seedling growth

    rate make seedling production impractical.

    germination First, scarify the seeds. For faster germination, soak the seeds in slightly hot

    water for 24-48 hours, followed by 3 months before sowing at 3/4" deep in

    your soil mixture. Any planting out is best done in late Spring or early

    Summer, after the last expected frosts. Keep damp soil, not soaking wet. Keep

    pot in warm situation 68-75F. Germination can take several months. It can be

    a lot more depending on their degree of unbroken dormancy, don't lose faith.

    Scarification /

    Stratification

    Seed coats may be so hard that they are impermeable to water. They need to

    be scratched or broken using a knife or sandpaper, in order to germinate. Chip

    the seeds with a sharp knife or make a few swipes with a sharp edged file or

    use sandpaper to allow moisture being more readily absorbed.

    Las semillas, limpias de restos de pulpa, se

    conservaron durante 3-4 meses a 4C, salvo en el caso de obtencin de embriones que seutilizaron

    directamente. En el conjunto de las especies consideradas, aunque no en cada una de

    ellas (tabla 1), se

    utilizaron los procedimientos de germinacin que a continuacin se indican: i)

    germinacin en semilleros.- Se sembraron semillas completas y con P. latofolia semillas

    sin

    cubierta en bandejas de PVC ( 7 cm de profundidad) con substrato hmedo de suelo

    (normalmente

    del lugar de procedencia de la semilla) y turba, en proporcin 4:1 v/v, en cmara de

    cultivo a 25C de

    temperatura, 111 E/m-2

    s

    -1

    de iluminacin y 16 h. de fotoperodo.

    ii) Germinacin in vitro.- En relacin con la especie, se utilizaron semillas

    completas,

    escarificadas, sin cubierta o embriones aislados (tabla 1).

    Una vez extrada del fruto la semilla completa, se desinfect por una primera

    inmersin en

    etanol 70-80%, durante 5-10 segundos, seguida de otra mas prolongada (

    20 min.) ensolucin al

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    20% de NaOCl, del 3.5 % de cloro activo, a temperatura de 40C y agitacin. A

    continuacin, las

    semillas se lavaron cuidadosamente con agua destilada estril.

    La escarificacin de las semillas se realiz por rozamiento con papel de lija fino,

    tras lo cualse sometieron a la desinfeccin indicada mas arriba. La semilla sin cubierta(desnuda) se obtuvo

    seccionando sta con un cortatubos en las mas duras, o por presin en las mas frgiles.

    Para el

    aislamiento del embrin, la semilla sin cubierta, preparada como se indic antes, se

    puso en placa

    Petri con agua destilada estril, y as se incub a 25C durante 48h. Esto produjo

    hinchazn y

    reblandecimiento de los tejidos del endospermo, lo que facilit la realizacin de cortes

    laterales en el

    mismo, que dejaron visible el embrin, que se extrajo fcilmente con la punta del

    bistur.

    Para su cultivo in vitro, tanto las semillas como los embriones, se cultivaron en

    tubos de

    ensayo estriles de 21x150 mm con 8 ml de medio nutritivo en agar 0.7% y pH 5.7.

    Como medio

    nutritivo se utiliz el MS (Murashige y Skoog, 1962). Las condiciones de la cmara de

    cultivo fueron

    temperatura de 251C, iluminacin 30E/m-2

    s

    -1

    y fotoperodo de 16 horas de luz. El trasplante

    desde in vitro a condiciones externas se realiz segn el mtodo propuesto por Cantos et

    al. (1993).

    To break the dormancy of olive seeds :1-Remove the bulb2-excise the endocarb3-put the seeds on a bed of 1cm of fine moisted perlite cover the seeds with 1/2 cm of finegranules of perlite4- store the seeds in glass or sterilized plastic container in the fridge5- in 4 weeks..they start to germinate6- transfer them into germinating room(20 degree C) in appropriate media

    7- 2 more weeks you will see the seedlings coming out

    Readmore: http://wiki.answers.com/Q/How_do_you_germinate_olive_seed#ixzz1NmVmYNso

    Olive seeds do not germinate promptly when placed under favourable conditions, which is a problem inraising young plants for breeding or experimental purposes. In a series of experiments an investigation ofthe role of temperature in the germination of olive embryos was conducted. Naked, unchilled oliveembryos (Olea europaea L. cv. Chalkidikis), cultured in vitro at 20C, had a germination capacity of 73%,whereas that of embryos which had previously been chilled at 10C for 2 or more weeks reached 96%.Intact seeds did not germinate at 20C unless they had previously been subjected to 10C for 3 or 4weeks. Embryos chilled while in the intact seed and excised just before transfer to 20C, reacted in asimilar way to naked embryos, but reached their maximum germination capacity after 4 weeks at 10C.

    Under constant temperature conditions the highest germination percentage of embryos was observed at10 and 15C and the highest germination rate at 15C, while a moderate capacity and rate of germinationoccurred at 20C, and a very low percentage and rate at 25 and 30C. Prechilling at 10C did not affect

    http://wiki.answers.com/Q/How_do_you_germinate_olive_seed#ixzz1NmVmYNsohttp://wiki.answers.com/Q/How_do_you_germinate_olive_seed#ixzz1NmVmYNso
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    germination at 15C, but improved the percentage and the rate of germination at 20, 25 and 30C. Thegermination percentages of embryos chilled for 1 or 2 weeks at 10C and then transferred to 25C werelower than those of similarly chilled embryos transferred to 20C. The chilling effect could not be reversedat 25C when the embryos had been chilled for 3 or more weeks. The results show that olive seeds exhibita state of dormancy that is caused by factors residing partly in the endosperm and partly within theembryo.