Poncirus polyandra

Poncirus trifoliata (ou C. trifoliata) et ses hybrides tels que Citranges, Citrumelos, autres hybrides rustiques avant tout utilisés en tant que porte-greffes.

Re: Poncirus polyandra

Messagepar clems » 03 Juil 2009, 11:03

Gmitter & Hu 1990 the possible role of yunnan, china, in the origin of contemporary Citrus species (rutaceae). Economic botany 44: 267-277.
clems
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Re: Poncirus polyandra

Messagepar Sylvain » 19 Déc 2013, 19:43

Son surnom c'est FETO, Fuming Evergreen Trifoliate Orange (Poncirus Polyandra).
On le trouve dans le conté de Fuming de la province du Yunnan à une altitude de 2400m.
Le feuillage est persistant. Les fleurs on de 5 à 15 pétals. Elles sont simples ou doubles. Seuls 5% sont fertiles.
Les fruits sont nettement plus gros que ceux du PT, 64 à 130g.


Information about FETO Fuming Evergreen Trifoliate Orange (Poncirus Polyandra)

PRIMARY STUDY OF FUMING EVERGREEN TRIFOLIATE ORANGE (P. trifoliata Raf.)*

DUAN Zhiyu
Fuming Station of Tea, Mulberry & Fruit, Yunnan, P. R. China

Abstract We have studied Fuming evergreen trifoliate orange for more than 10 years. Detailed morphological and botanical characters are described. It is a primitive species of Poncirus, which is more dwarf than the ordinary trifoliate orange, and requiring further study.
Trifofoliate orange is the most useful rootstock in citrus production. It is a deciduous with trifoliate compound leaf; the ovary is covered with short pubescence with bitter oil in juice.
We have discovered Fuming evergreen trifoliate orange in 1978 in Yunnan Province.
From 1978 we have investigated its native home several times and have transplanted some plants in our orchard for detailed observation. Nearly 26 citrus cultivars had been grafted on it using common trifoliate orange as check. The experiment results are enumerated as follows.

1. BASIC CONDITION

Fuming evergreen trifoliate orange is known as a wild citrus or wild trifoliate orange. It distributes on the mountain in Fuming County of Yunnan Province, about 10 mow's area on the altitude of 2,400 m with annual rainfall of 1,130 mm, annual mean temperature of 1 10C. The soil is heavy sand loam with small gravel's. Its companion plants arc Arundinella anomala Steud, Filicales, Mashonia japonica DC etc. Wild Fuming evergreen trifoliate orange trees are gradually decreasing. Many plants of Fuming evergreen trifoliate orange have been preserved in our experimental orchard.

II. MAIN DIFFERENCE BETWEEN FUNING EVERGREEN TRIFOLIATE ORANGE AND ORDINARY TRIFOLIATE ORANGE

Key to the species of Poncirus:
1. Palmate trifoliate compound leaf with narrow wing-like petiole. Flower buds are formed on the branches of last year in the axilaris, ovary with short pubescence, juice with better oil
2. Evergreen with 2-3 times flowering in a( year, 5-15 petals, 32-37 stamens, ovary spheroid with retusus on the fruit tip, 7-10 segments, rind pale yellow colour --------------> Fuming evergreen trifoliate orange
22. Deciduous, flowering only once a year, with 5 petals, 8-20 stamens, ovary subglobose, fruit globose with 6-8 segments, rind orange colour -----------------> Ordinary trifoliate orange (Poncirus trifoliata Raf.)

III. BOTANICAL CHARACTERS

Fuming evergreen trifoliate orange is a bushy evergreen tree, with many branches without center trunk but with many branches. The canopy of the tree is cylindrical, erect, the angle between the branches is acute, 40~50°.
The main branches are grey brown with white lineate. A 13-year-old tree is about 3.6 m tall with 40 cm trunk circumference. Diameter of the tree canopy is 1.6 x 1.5 m. The current shoots are 2-22 cm. Most of them are 10 cm long, while young shoots are always triangular with pale green colour. When ripen the angle disappear turn to round shape with dark green covered with white lines. Most current shoots are round curve dependence. Internodes are 0.5-3.5 cm; each node has a leaf. In the leaf axils have a bud and a thorn. The thorn is conical; 0.5-3.7cm, most are 1.5 cm.

Image
Fig. 1. Fuming evergreen trifoliate orange (1. flower shoot; 2. pistil stamens; 3. Fruiting shoot; 4. Seed).

Leaf is palmate trifoliate, leathery, the middle rib is prominent, upper of the leaf is dark green, leaf back is yellow green. The leaf stalk has narrow wings of 0.5-3.5cm long; most are 1.5 cm. The tip leaflet is 3-3.6 cm long, 0.7-2 cm broad. Lateral leaflets are smaller than tip leaflet, always 2 / 3 long as the tip leaflet.
The flower is in the leaf axil, with single and rarely double flowers. The flower~~i~e2 papery, flower size is not even. The flower diameters are 2-5.5 cm with extreme ~ 0.3 cm. The flower bud is napiformis rather large and prominent with 5 lobed sepals, Yellow green ovoid shape. Petals are 5-15, oblong or obverse ovate, 2-2.5 cm long, 1.4-1.8 cm broad with white, short pubescence. The flower has two kinds single layer and double flower. Stamens are 32-37 rather even; the filaments are separate from the base 0.7-0.8 cm long. Anther yellow, pollen sac conical 0.3 cm tip point. Pistil's style upright 0.3 cm long, diameter 0.15 cm, stigma green yellow, little retusus, 0.3 cm diameter long and 0.25 diameter wide, little higher than the stamens.
The ovary is spheroidal; tip depressed dark green with white short pubescence, diameter 0.5 cm. Most flowers are female sterile, the stigma and the ovary are withered. The perfect flowers with developed pistil are very few, about 5% of whole flowers. Fruit is spheroidal, pale yellow, 4.4-4.5 diameter long and 5.3-7.5 cm wide. Fruit weight 64-130 g, averaging 97 g. The fruit surface is rough with ridges and white short pubescence, oil glands small and intensive, evenly distributed. The fruit tip is depressed, about 0.5-1.2 cm deep, with 5-6 unequal irradiated ridges, 2-3 cm long and 2-3 high, the style scar is not clear. The carpopodium 0.3-0.5 cm, diameter 0.5 cm. From the carpopodium there are 9-12 irradiated vallicules 1.5-3.5cm long, and 0.10.5cm deep, narrower than its top.
The rind is 0.3-0.5 cm thick, rather crisp, quite loose and easy to peel. The spongy tissue is white, loose, about 1 / 3 - 1 / 2 of the thickness of rind. Oil glands yellow, round shape, diameter 0.1 cm, 1-2 layers, the outer layer are arranged evenly, the inner layer arranged unevenly and looser, the membrane of the segn3ient is very thin, easy to break, juice quite much, contains bitter oil, unsuitable to eat. The core is solid, diameter 1-1.4 cm.
The seeds of the fruit are 30-36, per hundred fresh seeds weight 60 g. The seed is nearly ovate 1.2 cm long and 0.9 cm wide, no beak; the external seed coat is pale yellow brown, leathery tough; the inner seed coat is thin with yellow brown, the chalaza is purple brown. The cotyledon is milky white; embryo is ellipsoid, yellow green, polyembryonic percentage germination is over 95%.
Fuming evergreen trifoliate orange tree root system is shallow, without developed main root but with well-developed lateral roots, and with strong suckering ability.
Shoot-growth is 3 times a year. Fuming evergreen trifoliate orange' s spring shoots start growth in early March, summer shoots in early June and autumn shoots in late August. It flowers 2-3 times in one year, usually 3 times respectively in early March, mid May and early August. Fruit can be set in each time, but best in March. The first flowering fruit is ripened in early October. The second flowering fruit ripened at the end of October.

IV. GRAFTING AND CULTIVATION

For more than 10 years we have used the F.E.T.O. as rootstock for 26 orange cultivars and have planted them in our experimental orchard. The results are as follows:
1) F.E.T.O. can be used as rootstock for sweet orange, satsuma mandarin, ponkan, citron, kumquat and pumelo etc. with 26 cultivars. Its compatibility is much like the ordinary trifoliate orange.
2) It is rather precocious and early bearing with wide adaptability. The colour and quality of the fruits are almost like the ordinary trifoliate orange, but when grafted with Hamlin sweet orange, Ponkan and Wase satsuma mandarin, their fruits ripen 5-10 days earlier than on the ordinary trifoliate orange rootstocks.
3) The F.E.T.O. rootstock has the anti- brown ants character, better than trifoliate orange.
4) The F.E.T.O. used as citrus rootstock, the growth under the graft union is much larger than the trifoliate orange rootstock and the dwarfing effect is more prominent, so it can be used for density planting.
5) The F.E.T.O. is unsuitable as rootstock for few cultivars: Dai Dai and Nanfeng mandarin.

Table 1. Comparison of the dwarfing effect of F.E.T.O. and ordinary trifoliate orange
Cultivar Age of tree Sp. of stock Height of tree Canopy diam. (mxm)
Unshiu 7 F.E.T.O. 1.2 1.8x1.9
Unshiu 1 7 Trifoliate orange 2.1 2.0x2.1
Hamlin 7 F.E.T.O. 1.2 1.5>< 1.6
Hamlin 7 Trifoliate orange 2.6 2.2x2.2
Mandarin 8 F.E.T.O. 1.7 1.0>< 1.0
Mandarin 8 Trifoliate orange 2.2 1.3>< 1.4

V. SUMMARY

The F.E.T.O. is an evergreen trifoliate orange discovered in Fuming County of Yunnan Province, China.
The morphological characters are also different as: the leaves are larger, the petals number arc more, 5-15, the stamens are also more than the ordinary trifoliate orange, 8-20, it has
32-37 stamens and the fruit is 64-130 g, larger than ordinary trifoliate fruit, which is only 18-25g, with an average of 36 seeds while the trifoliate orange has only 25.
It is supposed that Fuming evergreen trifoliate orange is a primitive species of the trifoliate orange family.
According to our grafting and cultivation experiment study, we suggest that F.E.T.Q. may be used as a dwarfing rootstock for many citrus cultivars.

REFERENCES

1. Yu DJ. Chinese Systematic Pomology. Chinese Agr. Sci. Publ. Co., 1979.
2. Chen HY, Sun NJ. "Guanyun" No. 1 - The tetraploid trifoliate orange discovered in Guanyun County. Acta Hort. Sin. Vol. 16, No. 1, 1989.
3. Central China Agr. Univ. Research Methods in Fruit Growing. Chinese Agr. Sci. Publ. Co., 1979.

http://www.zitrusgarten.net/homepage/feto.htm

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http://www.plantphoto.cn/tu/362903

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http://english.kib.cas.cn/rh/rp/201301/t20130128_98591.html
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Sylvain
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Re: Poncirus polyandra

Messagepar mikkel » 27 Mar 2014, 23:05

il s'agit d'une plante dans le jardin botanique de Darmstadt en Allemagne.
l'autre sur est dans une collection privée en Allemagne occidentale.
j'ai eu contact avec le propriétaire, il m'a dit qu'il a été floraison l'année dernière pour la première fois mais n'avait pas de fruits.
il n'est pas très résistant au froid. il a eu des problèmes cet hiver à Darmstadt.
mikkel
Pétiole ailé
 
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Re: Poncirus polyandra

Messagepar Sylvain » 28 Mar 2014, 08:14

Tu peux lui demander des baguettes pour greffer? Ou nous mettre directement en contact?
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Sylvain
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Re: Poncirus polyandra

Messagepar jm » 28 Mar 2014, 08:31

Ça se mange ? Bon, je sais je suis très basique ! :mrgreen:
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jm
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Re: Poncirus polyandra

Messagepar Sylvain » 28 Mai 2014, 16:43

Non, d'après la description c'est aussi immangeable que le PT.
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Sylvain
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Re: Poncirus polyandra

Messagepar JOAN » 20 Sep 2014, 00:37

slt
ya 3 polyandra ? poncirus ,citrus ,fortunella
j'avai lu sur le web le citrus polyandra hybride citrus medica x macroptera .
allors poncirus polyandra = poncirus x macroptera
fortunelle polyandra = kumquat x macroptera ...................non ? ? ?
JOAN
Pétale batifolant
 
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Re: Poncirus polyandra

Messagepar JOAN » 20 Sep 2014, 01:10

Les rameaux de Clymenia sont sans épines et les feuilles sont très particulières, étant elliptique, acuminé à ses deux extrémités, avec la base de fusionner en un très court, mince, pétiole ailes qui n'est pas articulé ou de quelque façon marquée hors de la lame. Les fleurs sont produites séparément à l'aisselle des feuilles, pétales court et large (7 x 7 mm); étamines très nombreuses (50-100) dans de nombreuses spires, avec des filaments courts (5 mm). Les fruits sont en forme de citron, 4,5 x 6-7 cm, avec une courte mamelon au sommet; pulpe sucrée; graines nombreuses. Tanaka revient le mérite d'avoir d'abord remarqué la grande divergence de cette plante dans la plupart de ses caractères taxonomiques essentielles de toute autre de connu Vrai agrumes arbres. Toutefois, il a considéré qu'il s'agissait d'un hybride de Citrus macroptera et Citrus medica . Cette espèce, appelée un Mulis par les indigènes dans le village de Namatanai en Nouvelle-Irlande, est cultivé pour ses fruits sucrés.


CITRUS PAGES
JOAN
Pétale batifolant
 
Enregistré le: 12 Déc 2013, 05:45

Re: Poncirus polyandra

Messagepar Sylvain » 01 Nov 2014, 21:02

ya 3 polyandra ? poncirus ,citrus ,fortunella
j'avai lu sur le web le citrus polyandra hybride citrus medica x macroptera .
allors poncirus polyandra = poncirus x macroptera
fortunelle polyandra = kumquat x macroptera ...................non ? ? ?
Les trois propositions sont fausses.
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Sylvain
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Re: Poncirus polyandra

Messagepar JOAN » 03 Nov 2014, 15:44

OK
mais c'est quoi ( poly andra ) ?
la première proposition est de tanaka pourquoi la contre dir ?
JOAN
Pétale batifolant
 
Enregistré le: 12 Déc 2013, 05:45

Re: Poncirus polyandra

Messagepar Sylvain » 03 Nov 2014, 16:38

> La première proposition est de Tanaka pourquoi la contredire ?
Parce qu'il s'est trompé. Depuis, il est appelé Clymenia polyandra mais va peut-être prochainement rejoindre les Citrus.

Tu t'étonnes de rencontrer plusieurs "Paul" ou "Pierre"? Non, tu les différencies par leur nom de famille.
Ici c'est pareil. Polyandra veut dire "qui a beaucoup d'étamines" en grec.
On parle de trois plantes dont le nom d'espèce est polyandra (en fait il y en a beaucoup plus) mais leur genre est:
- Clymenia
- Fortunella
- Poncirus
C'est tout.
Aucun n'est un hybride de Macroptera.
Fortunella a rejoint les Citrus

C'est gentil de citer Citus Pages :D
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Sylvain
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Re: Poncirus polyandra

Messagepar JOAN » 12 Déc 2014, 05:05

:wink:
JOAN
Pétale batifolant
 
Enregistré le: 12 Déc 2013, 05:45

Re: Poncirus polyandra

Messagepar Sylvain » 22 Juil 2017, 14:31

Voici la première fleur:
Image

On comprend le "polyandra". :)
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Sylvain
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Re: Poncirus polyandra

Messagepar mikkel » 23 Juil 2017, 10:21

bravo! Congratulations! It looks newly grafted. Right?
mikkel
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Re: Poncirus polyandra

Messagepar Sylvain » 23 Juil 2017, 11:47

Oui, c'est une greffe toute nouvelle.
J'ai décidé de mettre mon grand PP en terre mais comme on ne connaît pas bien sa résistance au froid j'ai d'abord fait une greffe de sécurité.
Il semble que le pied mère va se couvrir de fleurs. :D
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Sylvain
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