植物营养与肥料学报2014,20(2）：309-317 Journal of Plant Nutrition and Fertilizer
doi=10.11674/zwyf.2014.0206
不同磷水平下小麦B染色体双端体植株
干物质积累和磷效率特征研究
郭丽，郭程瑾！，丁长欢？，赵妙3，李小娟？，肖凯！*
（1河北农业大学农学院，河北保定071001;2河北农业大学生命科学学院，河北保定071001；
3华北电力大学科技学院，河北保定071000）
摘要：以中国春（CS)及其B染色体组双端体（1BS～7BS和1BL～7BL)）为材料,采用溶液培养法，研究了不同磷水平下各供试材料的于物质积累和磷效率特征。结果表明，与CS相比，丰磷下4BS、6BS、3BL及7BL和低碳下 4BS、6BS、7BS、和7BL植株形态及单株干重无明显变化,其他B染色体组双端体植株形态变劣、单株干重降低。丰、低磷下，各双端体单株磷累积量与CS相比多呈减少趋势，表明缺失B染色体长、短臂对小麦的磷素吸收和累积发挥不同程度负调控效应。全磷含量表现为丰磷下4BS和4BL较CS显著增加、5BS较CS显著降低；低磷下5BS 较CS显著提高.3BL和5BL较CS显著降低。与CS相比,各双端体植株的磷效率变幅较大,呈与单株磷累积量相反趋势变化，即丰磷下3BS、5BS较CS显著增加，4BS、1BL和4BL较CS显著减少。丰、低磷条件下，多数双端体植株氮钾效率与CS相比也发生不同程度改变。丰、低磷磷下单株干重与磷累积量呈显著正相关，且单株干重与单株叶面积也呈显著正相关。因此，本研究证实，特定B染色体组长、短臂在调控植株抵御低磷逆境中发挥着重要遗传效应，可用单株叶面积作为丰、低磷下植株磷效率的评价指标。
关键词：小麦（TriticumaestirumL.）；B染色体组；双端体；丰低磷；磷效率性状；氮钾效率性状；形态学性状
中图分类号：S945.12；S131.2
文献标识码：A
文章编号：1008-505X(2014)02-0309-09
Theaccumulationofdrymatterandphosphorus efficienciesinwheat chromosome Bditelosomic lines underboth sufficient-and low-Pi conditions
GUO Li', GUO Cheng jin', DING Chang-hua', ZHAO Miao', LI Xiao-juan’, XIAO Kai'(I College of Agronomy, Agricultural Uniaersity of Hebei, Baoding, Hebei 07100I, China ; 2 College of Life Sciences, Agricultural University of Hebei, Baoding,Hebei 071001, Chinai;
3 College of Science and Technology, North China Electric Poueer Unirersity, Baoding, Hebei 071000, China)
Abstract:Chinese spring （CS) and ditelosomic lines （DL)from B chromosome （1BS-7BS,1BL-7BL)were used to investigate the accumulation of plant dry matter and phosphorus efficiencies under sufficient Pi and low-Pi conditions by hydroponics experiment . Compared with CS, the plant phenotypic features and dry weights of 4BS, 6BS, 3BL and 7BL under sufficient -Pi condition and those of DL 4BS, 6BS, 7BS and 7BL under low-Pi condition were stable. The phenotypic features in the other DLs became worese and the dry weight decreased significantly at both Pi-supply conditions. The P accumulation amount per plant in the tested DLs displayed a decreasing trend compared with CS under both Pi -supply conditions , suggesting that the deletion of long or short chromosome B arms in wheat were involved in regulating accumulation of phosphorus in the plant . Under sufficient Pi condition, the total P contents in 4BS and 4BL were significantly higher than that in CS , whereas that in 5BS was significantly lower than that in CS. Under low-Pi condition, the total P content in 5BS was significantly higher than that in CS whereas that in 3BL and 5BL were significantly lower than that in CS. Compared with CS, the tested DLs relatively
收稿日期：2013-05-20
接受日期：2013-11-12
基金项目：国家自然科学基金项目（31201674)；河北省自然科学基金项目（C2011204031)资助。
作者简介：郭丽（1979—），女，河北饶阳人，博士研究生，主要从事作物营养生理和分子生物学研究。E-mail：guoli1212@sina.com
*通信作者E-mail；xiaokai@ hebau.edu.cn