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园艺学报 ›› 2002, Vol. 29 ›› Issue (1): 63-65.

• 研究报告 • 上一篇    下一篇

兰州地区引种的美国扁桃的越冬伤害与临界致死低温

潘晓云1; 王根轩1*; 曹琴东2

  

  1. (1兰州大学干旱农业生态国家重点实验室, 兰州730000; 1048577; 2 甘肃省绿色食品办公室, 兰州730030 )
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-02-25 发布日期:2002-02-25

Winter Injury Index and Lethal Low Temperature for Introducted AmericanAlmond in Lanzhou, China

Pan Xiaoyun1, Wang Genxuan1, and Cao Qindong2
  

  1. ( 1State Key Laboratory of Arid Agroecology , Lanzhou University , Lanzhou 730000, China ;􀀁 2Green Food Office of Gansu, Lanz hou730030, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-02-25 Published:2002-02-25

摘要: 通过田间越冬指数调查、组织变褐法和电导法配合Logistic 方程求拐点温度的方法, 对7 个从
美国引入的扁桃品种的抗寒性进行评价。结果表明: 扁桃幼树1 年生休眠枝的低温半致死温度( LT50) 为- 18. 0 ~ - 24. 5; 其中 Butte和 Padre的抗寒性较强, 半致死温度约为- 24. 5; Nonpareil、Price! 和 Monterey! 的抗寒性中等, 半致死温度约为- 20. 9; Ne Plus! 和 Sonora! 的抗寒性较弱,半致死温度约为- 18. 3。

关键词: 扁桃, 越冬伤害指数, 低温半致死温度( LT50), 抗寒性

Abstract: Cold hardiness for seven introduced almond cultivars was evaluated by winter injury index, trunk cambial browning (TCB) and electrolytic conductance test ( EC) with logistic equation. The results showed that the low temperature for 50% ( LT50) of one􀀁year excised dormant shoots from young tree to be killed was - 18. 0 to - 24. 5. Classificat ion of cold hardiness of these cultivars was evaluated by system analysis, the results were as follows: 1) the hardy cultivars included Butte and Padre which could bear - 24. 5 􀀂 ; 2) Nonpareil, Price and Monterey belonged to the medium hardy ones, whose LT50 was about - 20. 9; 3) the tender cultivars included Ne Plus and Sonora whose LT50 was about - 18. 3.

Key words: Almond, Winter injury index, Low􀀁, temperature for 50% killed ( LT50), Cold hardiness

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