Reprinted from: http://www.actahort.org/books/351/351_10.htm and http://www.actahort.org/members/showpdf?booknrarnr=351_41

ISHS

International Society for Horticultural Science

HAZELNUT AND TRUFFLE CULTURE

PRODUCTION "IN VITRO" OF TWO HAZELNUT VARIETIES AND RESULTS ABOUT INOCULUM OF TUBER MAGNATUM PICO ON A MASS SCALE

Authors: G. Zuccherelli, S. Zuccherelli, V. Capaccio

Abstract:

The natural mycorrhizal symbiosis is important because provides the arboreus plants involved in it with more nourishment and better growth; symbiosis between forestal plants and edible fungi is particularly interesting.

Since uncontrolled fungi harvesting creates many problems to natural equilibria, new scientific methods have been recently set up to produce hazelnut plants mycorrhized with white truffle, in sterility conditions.

Two hazelnut varieties ("Tonda Romana" and "Tonda Gentile delle Langhe") have been successfully mycorrhized with a spore-inoculum of Tuber magnatum Pico, using a method of root contact between a mycorrhized plant, the so called mother plant (oak or lime) and non mycorrhized plant (young hazelnut plant) in order to transfer the inoculum. By checking hazelnut plantlets after 60 days of root contact with a mycorrhized mother plant we could see that about the 65% of root apices had caught the inoculum while the remaining part was still rapidly growing.

The inoculum by transferring guarantees fungus infection and identity. Moreover, it results that hazelnut plantlets produced "in vitro" estabilish a root symbiosis with Tuber magnatum Pico very easily. The interest for hazelnut is, therefore, not only as forestal plant for the restoration of natural equilibria; it should be considered, in fact, also the possibility to obtain a double production: hazelnuts and truffles.


Horticulturae 351: III International Congress on Hazelnut

COMPORTAMENTO DI OTTO CULTIVAR DI NOCCIOLO IN ISTRIA (CROAZIA)

Authors:  I. Miljkovic and Z. Prgomet

Abstract:

In the ecological conditions of Istra the researches were carried out during 7-years on the growth and yield of hazelnut cultivars: Tonda Romana, Tonda Gentile delle Langhe, Barcelona, Nocchione, Negret, Camponica, Istarski Okruglasti (Tonda Istriana) and Istarski Duguljasti (Lunga Istriana).

The climatic conditions are in general favourable for hazelnut culture. The soil is Terra Rossa of loamy texture and relatively good physical and chemical properties.

According to vegetative growth in the conditions of Istra the cultivars can be divided: 

  • very vigorous: Barcelona, Nocchione, Negret and Tonda Romana, 
  • medium vigorous: Camponica, Istarski Okruglasti and Tonda Gentile delle Langhe, 
  • slightly vigerous: Istarski Duguljasti 

Order of cultivars according yields in the first 7 years are: Nocchione, Istarski Duguljasti, Camponica, Negret, Barcelona, Tonda Romana, Istarski Okruglasti and Tonda Gentile delle Langhe.

The biggest randman of kernel are determinated for cultivars: Barcelona and Negret (about 46%), then Istarski Okruglasti (Tonda Romana) and Camponica (about 44%), and Nocchione and Istarski Duguljasti (about 42%).

The sensitivity of examinated cultivar to aridity are: Istarski Duguljasti, Nocchione, Camponica, Tonda Gentile delle Langhe, Istarski Okruglasti, Negret, Barcelona and Tonda Romana.

Per apportare una migliore conoscenza delle cultivar più importanti in Europa in comparazione con le cultivar croate, abbiamo piantato in Istria un frutteto sperimentale con le seguenti cultivar: Tonda Romana, Tonda Gentile delle Langhe, Barcelona, Nocchione, Negret, Camponica, Istarski okruglasti (Tonda Istriana), Istarski duguljasti (Lunga Istriana). Le piante sono state...

Other abstracts: http://www.actahort.org/books/351/index.htm

[The full versions of these two articles that are shown here as abstracts can be obtained for a fee from International Society of Horticultura Science.]


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