中国农业科学 ›› 2013, Vol. 46 ›› Issue (5): 1014-1024.doi: 10.3864/j.issn.0578-1752.2013.05.017

• 园艺 • 上一篇    下一篇

LT-I分析7个酿酒葡萄品种枝条的抗寒性

 高振, 翟衡, 张克坤, 党园, 杜远鹏   

  1. 1.山东农业大学园艺科学与工程学院/作物生物学国家重点实验室,山东泰安271018
    2.山东农业大学机械与电子工程学院,山东泰安271018
  • 收稿日期:2012-12-11 出版日期:2013-03-01 发布日期:2012-12-24
  • 通讯作者: 通信作者杜远鹏,Tel:0538-8241335;E-mail:duyuanpeng001@163.com
  • 作者简介:高振,E-mail:gaoz89@126.com
  • 基金资助:

    国家现代葡萄产业技术体系建设专项(CARS-30)、长江学者和创新团队发展计划项目(IRT1155)

A Study on Cold Hardiness of Seven Wine Grape Canes by LT-I Analysis

 GAO  Zhen, DI  Heng, ZHANG  Ke-Kun, DANG  Yuan, DU  Yuan-Peng   

  1. 1.College of Horticultural Science and Engineering, Shandong Agricultural University/State Key Laboratory of Crop Biology,  Taian 271018, Shandong
    2.College of Mechanical and Electronic Engineering, Shandong Agricultural University,Taian 271018, Shandong
  • Received:2012-12-11 Online:2013-03-01 Published:2012-12-24

摘要: 【目的】应用伤害度-温度回归直线(LT-I)的方法研究枝条低温放热(LTE),比较不同酿酒葡萄品种枝条的抗寒性。【方法】采用差热分析系统(DTA)对巨峰葡萄枝条进行低温放热分析,三点法确立韧皮部、髓及木质部伤害度-温度回归方程(LT-I),并用传统低温冷冻处理测定褐变率及电导率进行验证。【结果】LT-I分析得到的伤害度与传统低温冷冻处理的褐变率及电导率具有极显著相关关系,相关系数分别为0.996和0.983,说明LT-I分析方法可以应用于葡萄枝条抗寒性分析。7个酿酒品种在降温过程中的韧皮部LT-I斜率不同,从小到大依次为贵人香<西拉<赤霞珠<美乐<霞多丽<蛇龙珠<熊岳白;韧皮部的致死温度从高到低依次为美乐>蛇龙珠>霞多丽>贵人香>西拉>赤霞珠>熊岳白。不同品种木质部响应降温的斜率与韧皮部不同,西拉<熊岳白<霞多丽<蛇龙珠<美乐<赤霞珠<贵人香;木质部冻死温度从高到低顺序为西拉>霞多丽>蛇龙珠>美乐>赤霞珠>贵人香>熊岳白。【结论】LT-I是一种简单可靠的研究枝条抗寒性的方法,LTE综合指数比较得出熊岳白、贵人香枝条的抗寒性较强,其次为赤霞珠,西拉、美乐、蛇龙珠和霞多丽抗寒性较差。

关键词: 酿酒葡萄 , 抗寒性 , LT-I , 低温放热

Abstract: 【Objective】The regression line of injury-temperature (LT-I) was applied to analyze the low temperature exotherms (LTE) of canes to compare different cold hardiness of grapevine canes.【Method】Canes of Tyoho grapevine’ low temperature exotherms (LTE) were recorded by differential thermal analysis (DTA), injury-temperature (LT-I) of phloem, pith and xylem were established by three-point method, in addition, the browning rates and electrolytic conductivity determined by traditional low temperature freezing method were used to validated the correctness of LT-I.【Result】The injury degrees of phloem and cane from LT-I analysis were significantly related to the browning rates and electrolytic conductivity from traditional low temperature freezing analysis, and the correlation coefficient was 0.996 and 0.983, which indicated that the LT-I analysis method could be used to distinguish cold hardiness of grapevine canes. Analysis of LT-I of seven grapevines indicated that the slope of phloem LT-I was different among the cultivars when the temperature decreased. The order was Italian Riesling<Syrah<Cabernet Sauvignon<Merlot<Chardonnay<Cabernet Gernischt<White Xiongyue. The order of phloem lethal temperature was Merlot>Cabernet Gernisch>Chardonnayt>Ltalian Riesling>Syrah>Cabernet Sauvignon>White Xiongyue. The slope of xylem was different from phloem. The order of slope of xylem was Syrah<White Xiongyue<Chardonnay<Cabernet Gernischt<Merlot<Cabernet Sauvignon<Italian Riesling. The xylem lethal temperature of different cultivars was in the order of Syrah>Chardonnay>Cabernet Gernischt>Merlot>Cabernet Sauvignon>Italian Riesling>White Xiongyue.【Conclusion】 It is demonstrated that LT-I is a reliable and simple analysis method to compare the cold hardiness of grapevine canes. The LTE integrated assessment index indicated that White Xiongyue and Italian Riesling had better cold resistance, Cabernet Sauvignon was the moderate one, and Syrah, Merlot, Chardonnay and Cabernet Gernischt were the worse.

Key words: wine grape , cold hardiness , LT-I , low temperature exotherm