Marsol (aka Marisol) is a natural chestnut hybrid, a cross between a European chestnut (

Castanea sativa ''Castanea sativa'', the sweet chestnut, Spanish chestnut or just chestnut, is a species of tree in the family Fagaceae, native to Southern Europe and Asia Minor, and widely cultivated throughout the temperate world. A substantial, long-lived ...

) and Japanese (

Castanea crenata ''Castanea crenata'', the Japanese chestnut, also known as the Korean chestnut is a species of chestnut native to Japan and Korea. ''Castanea crenata'' exhibits resistance to ''Phytophthora cinnamomi'', the fungal pathogen that causes ink diseas ...

) (CA 07). INRA produced this variety from

Lalevade-d'Ardèche Lalevade-d'Ardèche (; oc, La Levada d'Ardecha) is a commune in the Ardèche department in southern France. It is the commune with the smallest area in the department. Economy In the 19th century, the commune was an active industrial center ...

. It is mainly used as a rootstock because of its good graft compatibility with many varieties. As a rootstock, it is more vigorous than

Maraval Maraval is one of the northern suburbs of Trinidad's capital, Port of Spain, a valley in northern Trinidad in Trinidad and Tobago. It is situated at the bottom of the hills of Paramin and located east of the Diego Martin valley to which it is conn ...

(equal to

Bouche de Betizac Bouche de Bétizac is a French chestnut cultivar developed in 1962 by INRA at the station of Malemort-sur-Corrèze near Brive. It is a controlled hybrid between Castanea sativa and Castanea crenata (female Bouche rouge × male Castanea crenata CA04 ...

or Comballe). Trees are resistant to

rust Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH ...

and roots have some resistance to

ink disease ''Phytophthora cinnamomi'' is a soil-borne water mould that produces an infection which causes a condition in plants variously called "root rot", "dieback", or (in certain ''Castanea'' species), "ink disease". The plant pathogen is one of the wor ...

. Marsol is the most sensitive chestnut cultivary to

Dryocosmus kuriphilus ''Dryocosmus kuriphilus'' is a species of gall wasp known by the common names chestnut gall wasp, Oriental chestnut gall wasp, and Asian chestnut gall wasp. It is native to China and it is known in many other parts of the world, particularly the ...

- the chestnut gall wasp, and very sensitive to the

codling moth The codling moth (''Cydia pomonella'') is a member of the Lepidopteran family Tortricidae. They are major pests to agricultural crops, mainly fruits such as apples and pears. Because the larvae are not able to feed on leaves, they are highly d ...

,Conduite du Châtaignier en agriculture biologique dans le sud-oues

, 2015 fairly sensitive to root asphyxiation, resistant to mosaic virus, slightly susceptible to chestnut blight. Trees are of medium height with a long trunk and branches higher up. Early bud breaks makes the shoot development sensitive to spring frosts. The male catkins flower from June 19–30 June followed by female flowers June 27 - July 8. The male catkins are pollen sterile. Nut production of grafted trees is medium with higher production on seedling trees. Nut production starts at four to five years. The triangular nuts are mid season ripening - shiny red mahogany in color. They keep and peel well. The nuts can be used fresh or for processing. The nut taste is described as lower quality. Occurrence of double embryos (

pericarp Fruit anatomy is the plant anatomy of the internal structure of fruit. Fruits are the mature ovary or ovaries of one or more flowers. They are found in three main anatomical categories: aggregate fruits, multiple fruits, and simple fruits. Aggre ...

splitting) is less than 5%. Vegetative multiplication is quite easy.

References

{{Reflist * Anagnostakis, Sandra L. The Connecticut Agricultural Experiment Statio
CULTIVARS OF CHESTNUT
2013, accessed 2017 * Breisch, Henri; "Châtaignes et marrons" - editor CTIFL - 1995 *Craddock, J.H. and Bassi, G. (1999) Effect of clonally propagated interspecific hybrid chestnut rootstocks on short-term graft incompatibility with four cultivars of Italian "Marrone". In: Salesses, G. (ed.) Proc. 2nd International Chestnut Symposium, Bordeaux, France. Acta Horticulturae 494: 207-12

* SWEET CHESTNUT (Castane

* Hennion, B.; Chestnut production in France: review, perspectives.; Acta Horticulturae 2010 No.866 pp. 493–497 ref.

* Osterc, G; Phenolic content in cuttings of two clones of hybrid chestnut (Castanea crenata×Castanea sativa) in the first days after cutting severance, Journal Acta Agriculturae Scandinavica, Section B Volume 58, 2008 - Issue

* Pereira-Lorenzo S. et al. (2012) Chestnut. In: Badenes M., Byrne D. (eds) Fruit Breeding. Handbook of Plant Breeding, vol 8. Springer, Boston, M

*Sartor, C ; Impact of the Asian wasp Dryocosmus kuriphilus (Yasumatsu) on cultivated chestnut: Yield loss and cultivar susceptibility; Scientia Horticulturae; Volume 197, 14 December 2015, Pages 454-46

* Solar, A et al.; GRAFTING AND PERFORMANCE IN THE FIRST YEAR OF 'MARSOL' GRAFTED ONTO DIFFERENT ROOTSTOCK

International Society for Horticultural Science, Acta Horticulturae 866; 2010; accessed 2020 * Vannini, Andrea and Vettraino, Anna Maria; Ink disease in chestnuts: impact on the European chestnut; Forest Snow and Landscape Research 76, 3: 345–350 (2001) Chestnut cultivars Edible nuts and seeds