Effects of Chilling Stress on Physiological Characteristics of a New Areca Variety ‘Reyan No.1’
To improve the studies of biological characteristics of ‘Reyan No.1’, one year old seedlings were used as experimental materials to measure the effects of chilling stress on the physiological characteristics.The seedlings were grown under 26, 20, 14, 8 ℃ for 0, 10, 20, 30 d respectively.The results showed that indices were normal under 26 ℃/10 d, 26 ℃/20 d, 26 ℃/30 d and had a small change under 20 ℃/10 d and 20 ℃/20 d.But there were obvious changes at 20 ℃/30 d and even significant under 14 ℃/10 d and 8 ℃/10 d.Especially with prolong of the treatment at 8 ℃/30 d, Pro, MDA, POD and SOD first gradually increased and then decreased.Combined with the severe injury symptom, 8 ℃/30d is the lethal temperature for "Reyan No.1".