Behaviour of hybrid chestnut rootstocks resistant to the ink disease in chestnut growing areas in Galicia

S. Pereira-Lorenzo, J. Fernández-López, I. Varela Arias, F. Sau

Abstract


Since 1987 some hybrid clones resistant to the ink disease were evaluated as rootstocks with the local cultivars in different sites of Galicia where it is normal to use grafted plants. After the first results published in 1990, in this work it is presented the behaviour of four hybrid clones after 11 years of grafting. In general, compatibility can be considered excellent and a good adaptation to Galician chestnut orchards, according to: 1) a perfect join between rootstock and cultivar; 2) an harmonious development of rootstock and cultivar; 3) a right aerial growth. Percentage of death plants has been high in every orchard (over 20 %). Grafting in nursery produce more regularity in orchards, because grafting in field it is more risky, but after callus formation, the growth it is very strong.

Keywords


Castanea; Compatibility; Adaptability; Phytophthora spp





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