Yissum - Research Development Company of the Hebrew University

Passion-Fruit Cultivar '428' (Dena) - Fruit Remain on The Vine After Ripening Dena (‘428’)

Posted by Yissum - Research Development Company of the Hebrew UniversityResponsive · Innovative Products and Technologies · Israel

Summary of the technology

Dena 428 ‘Ripens during summer’ - a new variety of the Passion Dream cultivar - bares sweet, exotic flavored fruit that remains on the vine when ripened, providing a continuous flow of produce throughout most of the year.
Project ID : 8-2010-2368

Yissum - Research Development Company of the Hebrew University

Description of the technology



Passionfruit, Passiflora edulis, plant breeding, warm temperature flower abscission, fruit abscission, ethylene, postharvest storage, out-of-season fruit.

Current Development Stage

General list: TRL5 Technology validated in relevant environment


Most passion fruit cultivars bear fruit twice a year: in the summer and the winter. Furthermore, each vine’s fruit ripens at different times causing the farmer to revisit the vine every 2 days to collect newly ripened fruit.

Our Innovation

We developed a, purple, sweet, exotic flavored passionfruit cultivar named 'Dena' (line '428') which does not abscise and remains on the vine for several weeks

  • Dena’s fruiting duration is 9 months long, from August to May (in the Mediterranean climate), which is 3 months longer than the leading commercial variety, ‘Passion Dream’ whose fruiting duration is only 6 months long, from July to August and again from January to April.
  • Dena can potentially increase a farmer’s profits by reducing the labor costs associated with daily fruit collection. Lack of abscission enables farmers to control harvest times based on market demand.
  • Dena has an additional harvest in the off-season (Sept. to Dec.) which commands higher market prices.
  • Dena can be grafted onto rootstocks for more vigorous growth.

Physical Attributes of the Fruit:

Dena has a deep purple color peel that is very attractive to consumers. Dena is slightly smaller and rounder then Passion Dream, the leading commercial variety.


It was shown (link) that reduced ethylene production in ‘Dena’ (previously called ‘Ripens during Summer’) delays abscission – remaining on the vine for several weeks.

‘Dena’ is also able to flower in the summer at very high temperatures, allowing it to bear fruit between September and December, unlike other commercial cultivars.

Dena’s fruit are rich in antioxidants and were recently shown to have neuroprotective properties (link).


Dena's cultivar is perfect for the fresh fruit market but can also be used in the production of juices. Dena is protected by the PBR (Plant Breeders Rights) in Israel.

We are looking for growers and distributors in Israel as well as partners abroad for growing, marketing and selling Dena.

Please see other specialty passion fruit cultivars such as Gilis (line 280-15), Yukis (line 280-7) and Oris (line 280-4).

Project manager

Ilya Pittel

Project researchers

Alon Samach
HUJI, Faculty of Agricultural, Food and Environmental Quality Sciences
Plant Sciences and Genetics

Related keywords

  • Agro chemicals
  • Agriculture
  • Agricultural genetic engineering applications
  • Agricultural chemicals
  • Agriculture, Forestry, Fishing, Animal Husbandry and Related Products
  • agriculture

About Yissum - Research Development Company of the Hebrew University

Technology Transfer Office from Israel

Yissum Research Development Company of the Hebrew University of Jerusalem Ltd. Founded in 1964 to protect and commercialize the Hebrew University’s intellectual property. Ranked among the top technology transfer companies, Yissum has registered over 8,900 patents covering 2,500 inventions; has licensed out 800 technologies and has spun-off 90 companies. Products that are based on Hebrew University technologies and were commercialized by Yissum generate today over $2 Billion in annual sales.

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