新疆农业科学 ›› 2018, Vol. 55 ›› Issue (4): 674-681.DOI: 10.6048/j.issn.1001-4330.2018.04.010

• 论文 • 上一篇    下一篇

库尔勒香梨×褐色句句梨F1代抗寒性研究

阿布来克·尼牙孜,李超海,章世奎,阿曼古丽·吾斯曼,唐章虎,董胜利   

  1. 新疆农业科学院轮台果树资源圃,新疆轮台 841600
  • 收稿日期:2018-03-20 出版日期:2018-04-20 发布日期:2018-07-18
  • 通信作者: 董胜利(1970-),男,新疆吐鲁番人,高级农艺师,研究方向为果树种质资源,(E-mail)1449693707@qq.com
  • 作者简介:阿布来克·尼牙孜(1984-),男,新疆吐鲁番人,硕士研究生,助理研究员,研究方向为果树栽培与育种,(E-mail)80114982@qq.com
  • 基金资助:
    新疆维吾尔自治区科研院所改革与发展专项资金项目“库尔勒香梨杂种实生苗早期鉴定及种质创新”(KYGY2016115)

Study on the Cold Resistance of F1 Generation Korla Fragrant Pear × Hesejujuli

Ablah Niyaz, LI Chao-hai, ZHANG Shi-kui, Amangul Osman, TANG Zhang-hu, DONG Sheng-li   

  1. Luntai Fruit Resources Nursery of Xinjiang Academy of Agricultural Sciences, Luntai Xinjiang 841600,China
  • Received:2018-03-20 Online:2018-04-20 Published:2018-07-18
  • Correspondence author: DONG Sheng-li (1970-), male, native place: Turpan, Xinjiang, undergraduate, senior agronomist. Research field: fruit tree germplasm resources. (E-mail)1449693707@qq.com
  • Supported by:
    The Special Fund Project of Reform and Development of Xinjiang Uygur Autonomous Region of China Research Institutes, "Early Identification and Germplasm Innovation of Hybrid Seedlings of Korla Fragrant Pear" (KYGY2016115)

摘要: 【目的】研究库尔勒香梨和褐色句句梨两个亲本抗寒性及其对杂交后代的影响,为选育抗寒性强的库尔勒香梨杂交后代提供理论依据。【方法】以3年生库尔勒香梨×褐色句句梨F1代群体和其亲本群体为研究对象,对一年生休眠枝进行人工低温胁迫处理,测定不同胁迫温度下休眠枝的电解质渗出率、可溶性糖、游离脯氨酸含量、丙二醛(MDA)含量、超氧化物歧化酶(SOD)的活性和枝条恢复萌芽率。【结果】母本库尔勒香梨、F1代杂交群体及父本褐色句句梨三个群体一年生休眠枝的半致死温度分别为-24.7、-26.5和-28.6℃。三个群体一年生休眠枝可溶性糖、MDA和游离脯氨酸含量均随温度下降而升高,随后趋于平稳或小幅下降;SOD活性随着温度的下降逐渐升高,在半致死温度附近达到峰值之后迅速下降;库尔勒香梨在低于-30℃后,褐色句句梨和F1代杂交群体在低于-33℃后芽体全部死亡。三个群体中,父本褐色句句梨一年生休眠枝的电解质渗出率、MDA含量最低,可溶性糖、游离脯氨酸含量、萌芽率和SOD活性最高,表现出较强的抗寒性。父本褐色句句梨和库尔勒香梨×褐色句句梨F1代群体一年生休眠枝的抗寒性显著强于母本库尔勒香梨,且F1代群体的抗寒性稍弱于父本褐色句句梨。【结论】抗性较强的父本能够较大的提高杂交后代群体抗寒性。

关键词: 库尔勒香梨; 褐色句句梨; F1代群体; 抗寒性

Abstract: 【Objective】 In order to understand the cold resistance of two parents and their effects on offspring and provide a theoretical basis for breeding cold resistance of Korla pear hybrids.【Method】Using 3 year old F1 generation of Korla fragrant pear × Hesejujuli and its parent group as the research object, the electrolyte leakage rate, soluble sugar content, free proline content, MDA content, SOD activity and the recovery germination rate were determined after the annual dormant shoots were treated under different artificial low temperature stress. 【Result】The electrolyte leakage rate, MDA content, soluble sugar content, free proline content of three group annual dormancy branch increased gradually following with the temperature decreased, then remained stable or declined slightly; the SOD activity increased gradually as the temperature decreased, and got the peak at semi lethal temperature (LT50), and then it goes down rapidly. The branches germination rate decreased gradually following with the temperature decreased, which were no longer germination when the temperature exceeds the -33℃. In the three group branches, the annual dormant branches of male parent Hesejujuli showing strong cold resistance that the electrolytic leakage rate and MDA content were the lowest, and the soluble sugar, free proline content, germination rate and SOD activity were the highest. The cold resistance of the male parent Hesejujuli and of the F1 generation Korla Fragrant Pear × Hesejujuli shows stronger than that of female parent Korla Fragrant Pear, in which the cold resistance of F1 generation a little weaker than that of Hesejujuli. 【Conclusion】The male parent with strong cold resistance can greatly improve the cold resistance of the hybrid progeny.

Key words: Korla fragrant pear; Hesejujuli; F1 generation group; cold resistance

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

出版单位:《新疆农业科学》编辑部
地址:乌鲁木齐市南昌路403号新疆农业科学院
邮编:830091
电话:0991-4502046
E-mail:xjnykx-h@xaas.ac.cn


版权所有 © 《新疆农业科学》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发
总访问量: 今日访问: 在线人数:
网站
微信公众号
淘宝购买
微店购买