PROGRESSES ON THE HAZELNUT CROSS BREEDING OF CORYLUS HETEROPHYLLA FISCH. × CORYLUS AVELLANA L. IN CHINA

Corylus heterophylla Fisch. is a specific wild species native to northern China, with strong adaptability to low temperature.
In order to obtain hazelnut cultivars with large nut size and adaptability in the frigid terrain, the inter-species cross breeding of C. heterophylla Fisch. × C. avellana L. was performed in the 1980s.
A group of cultivars and advanced selections were obtained after nearly 20 years of research and the cultivation trials were further performed in several areas of different climatic conditions in northern China.
The cultivars and advanced selections like ‘Dawei’, ‘Liaozhen 3’ and ‘Liaozhen 7’ could adapt to -35°C, ‘Ping’ou 33’, ‘Ping’ou 237’ and ‘Ping’ou 48’ could adapt to -30°C, and ‘Liaozhen 1’ could adapt to -25°C at the dormancy stage.
The average weight of these cultivars and advanced selections are 2.6-3.0 g per nut, the kernels are easily blanched and kernel rates are 38.9-47.5% by weight.
The cultivars and advanced selections began their bearing 2-3 years after being planted.
The yields in the 5^th, 7^th and 10^th year are 660-1110, 2220-2553 and 2325-3000 kg/ha, respectively and high adaptability to soil pH value of 5.5 to 8.0. The successful progress of the hazelnut breeding program greatly promoted the hazelnut industry in China.

XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on the Challenge for a Sustainable Production, Protection and Consumption of Mediterranean Fruits and Nuts

W.J. Liang, D.F. Dong, G.X. Wang, F.X. Dong, L.S. Liang, Q.H. Ma

hybrid hazelnut, biological characteristic, cold-resistant, cultivation trial, nut quality

https://doi.org/10.17660/ActaHortic.2012.940.31