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以晚红、晚黄、长李15号、吉红、吉胜幼苗为试材,人工模拟水分亏缺,开展了不同时期新梢生长速率对水分亏缺敏感性、断水后致死时间等研究。结果表明:新梢生长速率与植株给水量间存在线性相关性,晚红、长李15号、吉胜3份资源对水分亏缺敏感,晚黄、吉红对水分亏缺不敏感;晚红、吉胜、长李15号不同时期断水后,致死时间较长,晚黄、吉红较短,即晚红、吉胜、长李15号抵抗极端干旱能力强于晚黄、吉红。
The late red, late yellow, Changli 15, auspicious red, Jisheng seedlings were used as materials to simulate the water deficit and to study the sensitivity of shoot growth rate to water deficit at different periods and the lethal time after water cut. The results showed that there was a linear correlation between the shoot growth rate and plant water supply. The late flowering red, Changli 15 and Jisheng were sensitive to the water deficit, and late yellow and auspicious red were not sensitive to the water deficit. , Ji Sheng, Chang Li 15 different periods of water cut, the longer lethal time, late yellow, auspicious red is shorter, late red, Katsuyoshi, Changli 15 strong resistance to extreme drought late yellow, auspicious.