[1]邵继锋,陈荣府,董晓英,等.利用分根技术研究小麦铝磷交互作用[J].江苏农业学报,2016,(01):78-83.[doi:10.3969/j.issn.1000-4440.2016.01.012 ]
 SHAO Ji-feng,CHEN Rong-fu,DONG Xiao-ying,et al.Aluminum-phosphorus interaction in wheat grown in a split-root device[J].,2016,(01):78-83.[doi:10.3969/j.issn.1000-4440.2016.01.012 ]
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利用分根技术研究小麦铝磷交互作用()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2016年01期
页码:
78-83
栏目:
耕作栽培·资源环境
出版日期:
2016-01-08

文章信息/Info

Title:
Aluminum-phosphorus interaction in wheat grown in a split-root device
作者:
邵继锋12陈荣府1董晓英1沈仁芳1
(1.中国科学院南京土壤研究所土壤与农业可持续发展重点实验室,江苏南京210008;2.中国科学院大学,北京100049)
Author(s):
SHAO Ji-feng12CHEN Rong-fu1DONG Xiao-ying1SHEN Ren-fang1
(1.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
关键词:
铝毒害小麦分根试验
Keywords:
aluminum toxicityphosphoruswheatsplit-root experiment
分类号:
S153.1
DOI:
10.3969/j.issn.1000-4440.2016.01.012
文献标志码:
A
摘要:
为更好地阐明植物中铝-磷之间的关系,以小麦为研究对象,研究了小麦植株内部转移的磷与铝毒害的关系。在水培条件下,利用分根技术(植株根系一分为二,分置A、B两个根室),排除铝、磷在溶液中的直接交互作用,通过磷素的转移研究植株内部转移的磷对铝毒害的作用以及响应。结果显示:通过比较生物量发现,处理1(A室无磷B室无磷)、处理2(A室低磷B室无磷)、处理3(A室高磷B室无磷)、处理7(A室无磷B室无磷)、处理8(A室低磷B室低磷)、处理9(A室高磷B室高磷)地上部和地下部生物量都随着磷浓度的增加而显著增加,但一侧加铝处理的处理5(A室低磷B室加铝)、处理6(A室高磷B室加铝)生物量则降低。比较根尖数、根直径、根长、根体积、光合速率等指标,发现在铝胁迫下处理4(A室无磷B室加铝)、处理5、处理6的B室根系生长指标、植株光合作用等并没有随着磷浓度的增加而增加。可见,在分根处理15 d条件下一侧根系供磷(A室)不能有效缓解另一侧根系(B室)的铝毒害。
Abstract:
To illustrate whether translocated-phosphorus in plant aggravates or alleviates aluminum toxicity in hydroponic system of wheat, the split-root technique (the root was placed in two compartments A and B) was applied to eliminate the aluminum(Al)-phosphorus(P) interaction in the solution. By measuring the biomass of treatment 1 (no P in both compartments), treatment 2(low P in compartment A and no P in compartment B), treatment 3(high P in compartment A and no P in compartment B), treatment 7(no P in compartment A and no P in compartment B), treatment 8(low P in compartment A and low P in compartment B), treatment 9(high P in compartment A and high P in compartment B),it was found that the biomass of shoot and root in above treatments increased as phosphorus concentration increased, however, the biomass in treatment 5(low P in compartment A and Al addition in compartment B) and treatment 6(high P in compartment A and Al addition in compartment B) dropped. By measuring the number of root tips, root diameter, root length, root volume and photosynthetic rate, it was found that root indexes and photosynthetic rates of treatment 4(no P in compartment A and Al addition in compartment B), treatment 5 and treatment 6 decreased as phosphorus concentration increased. It suggests that the phosphorus in compartment A can not alleviate aluminum toxicity in compartment B.

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备注/Memo

备注/Memo:
收稿日期:2015-04-14 基金项目:国家杰出青年科学基金项目(41025005);国家“973”计划项目(2014CB441000) 作者简介:邵继锋(1983-),男,浙江建德人,博士研究生,从事植物铝毒害和耐铝机制研究。(E-mail)brianshao888@gmail.com 通讯作者:沈仁芳,(E-mail)rfshen@issas.ac.cn
更新日期/Last Update: 2017-05-08