INIVIT fb – 2000 Dwarf . Variety obtained at INIVIT. Low plants (0.95 – 1.05 m). It produces oblong fruits, with an average of 37 fruits / plant, of red mesocarp with a Brix between 10 and 12%. The average weight of the fruits varies between 0.5 and 2.0 kg. Adaptable to grow houses with long shelf life.
Summary
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- 1 General
- 2 News of the variety
- 3 main features
- 1 Stem
- 2 Sheets
- 3 Flowers
- 4 fruits
- 4 Floral composition
- 5 Cultural tasks in this variety of interest
- 6 Sources
General
The new papaya variety ‘INIVIT- fb2000’ was obtained by genetic improvement at INIVIT, from 1995 onwards, by mutations induced by radiation to seeds from the ‘ Maradol Roja ‘ variety and during the following years there was a selection process and isolation until obtaining a variety of low bearing (0.95-1.05 m) highly productive and with excellent characteristics of the fruit such as: flavor, shape, color, consistency and transportation. This variety is different from all those known in the world, for its height, productive level for the number and weight of the fruits.
Variety news
In the Papaya Plant Breeding Program carried out during the last decade at INIVIT, it included obtaining a variety with a smaller size than the varieties currently grown in the world with the aim of seeking resistance to winds, facilitating mechanization, make the application of phytosanitary products more efficient and significantly increase the number of plants per hectare, without affecting the desirable characteristics of the fruits that are currently marketed and at the same time provide a cultivar that can be easily promoted in cultivation houses.
Main features
This variety is different from all the ones known in the world, due to its height, productive level for the number and weight of the fruits (1.0 kg.), Reaching an average of 37.3 fruits per plant with yields greater than 200 t / ha, in addition to facilitating cultivation work, resistance to winds and being able to establish more than 3000 plants / ha, as well as promoting planting in cultivation houses, being able to carry out phytosanitary applications both manually and mechanically, avoiding the attack of pests and diseases, which differentiates it from the ‘Maradol Roja’ variety, which was the variety that gave rise to it. Furthermore, there are no reports in the world of papaya varieties with the characteristics described.
Stem
- Height:
- Hermaphrodite plants: 65 – 95 cm
- Female plants: 55 – 70 cm
- Perimeter: 24 – 26 cm
- Position: Erect, unbranched
- Consistency: Fistulous, fleshy and hollow
- Bark: Smooth
- Foliar scars: Medium-large and numerous.
- Axillary bud production. Abundant
- Color: Greyish
- Philotaxy:
- Ratio: 1.4
- Length: 6.4cm
- Length between knots: 3.86 – 4.1 cm
Leaves
- Petiole – stem insertion angle: 70-90º
- Number of lobes: 9-10
- Lobe width: 4.2 cm
- Petiole length: 52-64 cm
- Blade length: 35-47cm
- Leaf Color: Deep Green
- Petiole color: Green – pinkish
flowers
- Color: Cream – pale yellow
- Shape: Conical
- Length:
- Hermaphrodites: (pentandria, intermediate and elongate) 5-6 cm)
- Female: 4-5 cm.
- Inflorescence type: Modified tops
- Height of first flowering: 20-28 cm
- Sexual balance:
- 75-85% hermaphrodites
- 5-25% female
- Formation of the first flower primodia: 55-65 days
- Time elapsing from the formation of one inflorescence to another: 2-3 days
Fruits
- Weight: 0.5-2.0 kg. With an average 1.0 Kg.
- Shape:
- Hermaphrodite plants: Elongated, cylindrical and uniform.
- Female Plants: Spherical
- Endocarp (rind): Smooth, deep green in its tender, ripe salmon red phase.
- Mesocarp: Salmon red color
- Height of first fruiting: 24-31 cm
- Average number of fruits per plant: 37.3
- Consistency: Very consistent on the inside
- Flavor: Exquisite and pleasant
- Brix: 9-13%
- Seeds: Abundant, large (6-7 mm) and black in color.
Floral composition
In this variety it behaves the same as its parent and six well-differentiated types of flowers are recognized: one female, three hermaphrodites and two male, commonly designated as types I, II, III, IV, V and VI. Type I. Female: pistillate flower, which lacks stamens and produces round, ovoid or oblong fruits. Type II. Hermaphrodite pentandria: flower with five stamens and one ovary, free petals and produces globose, ovoid fruits with a lobed cross section. Type III. Hermaphrodite intermediate: flower with six to nine stamens and an ovary, petals welded to a third of its length and it produces fruits of various shapes. In normal flowers the fruits are large and of good appearance, but both this flower and the previous one present many abnormalities that prevent it from developing fruits and therefore the plants that possess them give low yields. Type IV. Hermaphrodite perfect elongate: flower of 10 stamens and an ovary, petals welded in more than a third of its length. It ensures the highest fruit production, these are cylindrical, elongated and of very good quality. Type V. False hermaphrodite: This flower appears outwardly as a hermaphrodite with a short cluster, thick corolla and non-functional pistils. Summer sterile hermaphrodite call. It rarely produces fruits. Type VI. Male: flower that has ten stamens of cormorant gamopétala, of little thickness and rudimentary pistil. It does not produce fruits. petals welded over a third of their length. It ensures the highest fruit production, these are cylindrical, elongated and of very good quality. Type V. False hermaphrodite: This flower appears outwardly as a hermaphrodite with a short cluster, thick corolla and non-functional pistils. Summer sterile hermaphrodite call. It rarely produces fruits. Type VI. Male: flower that has ten stamens of cormorant gamopétala, of little thickness and rudimentary pistil. It does not produce fruits. petals welded over a third of their length. It ensures the highest fruit production, these are cylindrical, elongated and of very good quality. Type V. False hermaphrodite: This flower appears outwardly as a hermaphrodite with a short cluster, thick corolla and non-functional pistils. Summer sterile hermaphrodite call. It rarely produces fruits. Type VI. Male: flower that has ten stamens of cormorant gamopétala, of little thickness and rudimentary pistil. It does not produce fruits. flower that has ten stamens of gamopétala corolla, of little thickness and rudimentary pistil. It does not produce fruits. flower that has ten stamens of gamopétala corolla, thin and rudimentary pistil. It does not produce fruits.
Cultural work in this variety of interest
At the time of sowing, it is necessary to place 4 seeds per bag, to guarantee more than 95% of hermaphrodite plants in the sexing, since the female plants become unproductive.
- Sexing: Selection of a hermaphrodite plant that demonstrates better vegetative development.
- Due to the precocity of the axillary buds, it is necessary to carry out the work of deshije or deschuponado before the transplant and in planting ** every 7 days.
- The fractionation of mineral and organic fertilization is necessary throughout its vegetative cycle.
- Perform driving in terms of fruiting (enjoy) weekly.
