RESEARCH OF COLD RESISTANCE OF NEW POPULUS EURAMERICAN A VARIETY

The tests of natural and artificial low-temperature treatments, water loss of seedlings and growth recovery of the seedlings treated under low-temperature condition, are carried out to compare the cold resistance of the new variety with that of the checks, or P. deltoides cv. 'Lux' (ex. I-69/55) and P. euramericana cv. I-214. The results show that the cold resistance of the new variety is significantly higher than that of the female parent I-G9 and slightly higher than that of I-214, indicating that the new variety has inherited the cold resistance from the male parent, P. nigra. The expected aim is gained.