[1]蒋媛,位杰,林彩霞,等.6个香梨品种的低温半致死温度比较及耐寒性评价[J].江苏农业学报,2017,(06):1358-1363.[doi:doi:10.3969/j.issn.1000-4440.2017.06.023]
 JIANG Yuan,WEI Jie,LIN Cai-xia,et al.Evaluation on the cold resistance ability and the semi-lethal temperatures of six Korla fragrant pear varieties[J].,2017,(06):1358-1363.[doi:doi:10.3969/j.issn.1000-4440.2017.06.023]
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6个香梨品种的低温半致死温度比较及耐寒性评价()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年06期
页码:
1358-1363
栏目:
园艺
出版日期:
2017-12-30

文章信息/Info

Title:
Evaluation on the cold resistance ability and the semi-lethal temperatures of six Korla fragrant pear varieties
作者:
蒋媛1位杰1林彩霞1王刚1王丙太2徐其涛2赵文团1唐震超1李永丰1
(1.新疆生产建设兵团第二师农业科学研究所,新疆铁门关841005;2.新疆生产建设兵团第二师二十七团八连,新疆博湖841102)
Author(s):
JIANG Yuan1WEI Jie1LIN Cai-xia1WANG Gang1WANG Bing-tai2XU Qi-tao2ZHAO Wen-tuan1TANG Zhen-chao1LI Yong-feng1
(1.Agricultural Scientific Institute of 2nd Division of Xinjiang Production and Construction Corps, Tiemenguan 841005,China;2.The 27th Regimental Farm of 2nd Division of Xinjiang Production and Construction Corps, Bohu 841102,China)
关键词:
库尔勒香梨半致死温度耐寒性
Keywords:
Korla fragrant pearsemi-lethal temperaturecold resistance
分类号:
S661.2
DOI:
doi:10.3969/j.issn.1000-4440.2017.06.023
文献标志码:
A
摘要:
研究库尔勒香梨品种的半致死温度与耐寒性的关系及抗寒能力水平,为杂交育种工作中抗寒亲本的选择以及品种区域性引进栽培提供科学依据。以1 年生枝条为试验材料,采用电导率法测定各品种枝条在-18 ℃、-22 ℃、-26 ℃、-30 ℃、-34 ℃、-38 ℃低温处理下细胞膜透性的变化,配合Logistic方程,求得半致死温度(LT50),并与自然条件下的冻害指数进行相关性比较。结果表明,不同低温处理下各品种枝条的相对电导率和细胞膜伤害率的增加呈“S”形曲线,与相应的低温呈极显著负相关;6个香梨品种的低温半致死温度为-24.31 ℃(新梨6号)、-24.19 ℃(新梨7号)、-20.53 ℃(新梨8号)、-25.70 ℃(新梨9号)、-23.43 ℃(新梨10号)、-21.37 ℃(香梨),半致死温度与田间冻害指数呈显著正相关。半致死温度能准确反映库尔勒香梨的抗寒能力,供试香梨品种的抗寒力大小为:新梨9号>新梨6号>新梨7号>新梨10号>香梨>新梨8号。
Abstract:
To provide scientific basis for choosing parents of cold resistance for cross breeding work and regional introduction and cultivation of pear cultivars, the relationship between the semi-lethal temperature and the cold resistance and the cold resistance ability level of hybrid varieties of Korla fragrant pear were studied. Using annual dormant branches in five pear cultivars as materials, the changes of cell membrane permeability at -18 ℃, -22 ℃, -26 ℃, -30 ℃, -34 ℃ and -38 ℃ were determined after treatment for 12 hours by using conductance method (control group was not treated with low temperature), and the semi-lethal temperature (LT50) was calculated on the basis of relative electric conductivity combined with Logistic equation. The semi-lethal temperature was compared with the freezing injury index of the natural condition to evaluate the cold resistance ability of these cultivars. The result showed that the relative electric conductivity of pear branches and membrane injury percentage increased following an “S” curve with the decrease of temperature. The semi-lethal temperature of Xinli No.6, Xinli No.7, Xinli No.8, Xinli No.9, Xinli No.10 and Fragrant pear were -24.31 ℃,-24.19 ℃,-20.53 ℃,-25.70 ℃,-23.43 ℃ and -21.37 ℃, respectively. Correlation analysis found that the semi-lethal temperature of these cultivars had significant positive correlation with their field freezing injury index. The cold resistance of hybrid progeny of Korla fragrant pear could be accurately reflected by the semi-lethal temperature, the cold resistance of six pear varieties had significant difference, and the order of cold resistance for five pear cultivars was: Xinli No.9>Xinli No.6>Xinli No.7>Xinli No.10>Fragrant pear>Xinli No.8.

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备注/Memo

备注/Memo:
收稿日期:2017-05-07基金项目:新疆生产建设兵团第二师铁门关市农业科技攻关计划项目(2015NYGG10、2014NYGG13、2011NYGG12);河北省科技支撑计划项目(16246327D);新疆生产建设兵团科技支疆项目(2014AB003);河北省科技支撑计划项目(12246803D)作者简介:蒋媛(1989-),女,新疆库尔勒人,硕士,助理研究员,主要从事果树栽培生理生态与遗传育种的研究。(Email)360315184@qq.com通讯作者:位杰,(Email)627weijie@sina.com
更新日期/Last Update: 2018-01-03