FR2581504A1 - Variety of early clementine tree "Ripetri". - Google Patents

Abstract

The invention relates to a new variety of clementine trees called "Ripetri" whose main characteristics lie in a remarkable fruiting capacity, a complete seedlessness, a special shrubby development which makes it possible to envisage cultivation in the open field or as pot shrub. The most important applications of the invention relate to the large-scale production of clementines both in the open field and in pots.

Description

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  EARLY CLEMENTINIER VARIETY RIPETRI

  The present invention relates to a variety of Clementine which differs from varieties already known by the following characteristics: The new variety is ascending and excessively fruitful from an early age. - The resulting fruits are endowed with perfect organoleptic qualities.

  - The aspermia is total (absence of seeds) and the delicate flavor.

  - The skin of the fruit is thinner than that of known varieties.

  - The shrub development is more reduced than in the case of known varieties: this inducing a particular aptitude for nanification

  controlled to obtain a potted plant.

  Earliness is higher depending on the growing area by around 6 weeks. Fruits are mature from 15 days to 3 weeks earlier

  than those resulting from known varieties.

  Due to the features listed above, this

  invention meets the needs of the Citrus Industry.

  The aim sought by the applicants was to create a variety of clementine which would derive the aforementioned qualities and advantages from a genetic combination involving 2 sires whose respective prior study would allow them to count on their descendants.

  common, the appearance of the characters sought.

  The new variety comes from a pollination of new mutations

  Messerghin type clementine: operations lasted 10 years.

  The male sire is a seed variety,

  The female sire is a seedless variety.

  The artificial fertilization operation carried out by the applicants is expressed by the following formula R 210 with pips x

R 107 seedless.

  Several hybrid seeds resulted from this hybridization, the cells of which contained the combination of factors existing in the

spawning cells.

  The seeds have been sown. These hundreds of seeds have

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  hiologically distinct plants from each other.

  After eliminating all the deficient subjects or whose characters differed from those being researched, the applicants proceeded to a second stage of experimentation The trees resulting from the planted seeds made it possible to select two varieties which were retained for a ten-year observation in Figueretto and Casamozza (Corsica). At the end of this decade of experimentation, the applicants selected one of the varieties which presented a set of characteristics

  closer to the desired goal. This variety was called "Ripetril".

  Technical tests were then undertaken on the variety "Ripetriw to check its behavior, characteristics as well as

aptitude for fruiting.

  Flowering takes place during several periods of the year. The new variety has a 4 season character. This character can however be modified in open field cultivation using cultural techniques

  resulting in a unique spring flowering with short cycle.

  The shorter physiological cycle of around 3 weeks compared to the known varieties induces a characteristic precocity allowing picking 3 to 4 weeks before the other known varieties. This

  earliness may vary depending on the growing region.

  The physiological characteristics of the 'Ripetri' variety induce a definite aptitude for controlled dwarfing. This completely reliable approach makes it possible to obtain a potted plant capable of accomplishing all stages of the vegetative cycle: flowering, fruiting, ripening. in addition, it should be noted that early flowering occurs

  from the very year of grafting under normal culture conditions.

  This flowering is systematically followed by the development of the fruit and its maturation. The absence of physiological fall, usual

  in other clementines, provides high yields.

  The particular vigor of the new variety, explaining its high yield. is observed by a characteristic graft bead on certain rootstocks (for example bigaradier) The productivity of the targeted variety was widely tested. Conclusive Results Stressed the Importance of Creating Such a Variety

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  with a view to its industrial exploitation by professionals in the Citrus Industry for the production of a new variety of clementine. The characteristics and properties of the new variety obtained as indicated above are rigorously transmissible by vegetative (or asexual) means, that is to say by any means of vegetative propagation. The new variety will be designated commercially under the name of "Ripetri". By this same vegetative means, we will obtain each time the variety of clementine tree subject of the patent whose botanical and descriptive characteristics are listed below:

Description

  Height: 2 meters at normal density Upright branch Leaves: stipules: none straight petiole, slightly adnate: size: - young leaf: 5 mm adult leaf: 15 mm: obverse: presence of blade: reverse: smooth leaflets: numerous: shape = oval , without serration corneal texture presence of a varnished cuticle character of the whole. pale green on a young organ, becoming dark green on an adult organ. leaves young leaves = obverse: smooth with varnished cuticle cuff presence of slightly prominent veins; matt color dimensions: length about 7 cm median width about 2 cm adult leaves = obverse: smooth, leathery leaf, dark green cuff = oval shape matt color prominent veins. dimensions: length = il cm

  width = 4 cm in the middle part.

  Development 1) The simultaneous development of the terminal bud and the axillary buds gives the plant a sympodial habit 2) Flowering at the apex of 1 year shoots represents a very high rate of total flowering. 3) Whatever the agronomic and cultural climatic conditions, a normal development of the flower until the ripening of the fruit takes place in the absence of any runny or physiological fall during development. This character requires mastery of the size and

  cultivation techniques (water and fertilization).

  Identification To identify the new variety, it is annexed to this

  description as a sample. a number of reproductions

  photographs of the distinctive and representative elements: Photo 1 Transplant of the year with terminal fruit Photo 2 - 2nd year transplant Photo 3 Bead of graft on "Bigaradier" Photo 4 - Ripe fruit Photo 5 Plant in a nanified pot Photo 6 - Standard tree in production (graft 5 years) Photo 7 - Cluster effect Photo 8 - Sheets with anti-metric scale Photo 9 - Graft bead

Claims (5)

Claims   1) Variety of early and early clementine (4 seasons) "Ripetri" characterized in that it presents an excessively fruitful character from an early age, and that the fruits are endowed with perfect organoleptic qualities, that it presents total aspermia and   that it is suitable for use in the open field or in pots.   2) Variety according to claim 1 characterized in that the flowering   takes place during several times of the year.   3) Variety according to claims 1 and 2 characterized in that the   fruit ripeness takes about 3 weeks rather than in the case of classic varieties   4) Variety according to claims 1, 2 and 3, characterized in that the   fruits have a total absence of seeds (aspermia).   ) Variety according to any one of the preceding claims,   characterized in that the skin of the fruit is finer and its flavor more delicate.   6) Variety according to any one of the preceding claims,   characterized by the fact that the "Ripetri" variety can be used on a large scale for both open-field and   operating as a potted shrub.