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8/6/2019 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/Alkaline8/6/2019 Olive Grown From Seed
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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
8/6/2019 Olive Grown From Seed
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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#ixzz1NmVmYNso8/6/2019 Olive Grown From Seed
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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.