[1]王应祥　廖红　严小龙.大豆适应低磷胁迫的机理初探[J].大豆科学,2003,22(03):208-212.[doi:10.11861/j.issn.1000-9841.2003.03.0208]
　Wang Ying xiang Liao Hong Yan Xiaolo ng.PRELIMINARY S TUDIES ON THE MECHAN ISMS OFSOYBEAN IN ADAPTA TION TO LOW P STRESS[J].Soybean Science,2003,22(03):208-212.[doi:10.11861/j.issn.1000-9841.2003.03.0208]
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大豆适应低磷胁迫的机理初探

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第22卷 期数: 2003年03期 页码: 208-212 栏目: 出版日期: 2003-08-25
Title:
PRELIMINARY S TUDIES ON THE MECHAN ISMS OFSOYBEAN IN ADAPTA TION TO LOW P STRESS
文章编号:
1000 -9841(2003)03 -0208 -05
作者:
王应祥　廖红　严小龙
华南农业大学植物营养遗传研究室, 根系生物学中心, 广州510642
Author(s):
Wang Ying xiang 　Liao Hong 　Yan Xiaolo ng
Laboratory of Plant Nutri tional Genet ics , Root Biology Center , South ChinaAgricultural University , Guangzhou , 510642
关键词:
大豆; 磷效率; 根形态; 营养液栽培
Keywords:
Soybean ; Phospho rus ef ficiency ; Roo t mo rphology ; Nutrient solution culture
分类号:
S 565.101
DOI:
10.11861/j.issn.1000-9841.2003.03.0208
文献标志码:
A
摘要:
通过营养液栽培试验研究大豆适应低磷胁迫的机理, 试图找出供试大豆在水培条件下对低磷胁迫下的适应性与田间表现的关系, 为快速选育磷高效品种提供具有参考价值的实验数据。结果表明:在水培条件下, 大豆在磷效率方面存在着显著的基因型差异。在总体磷效率(以生物量为标准)方面和磷吸收效率(整株含磷量)方面, 结果与田间试验表现基本一致。BX10 和GD1 属于磷高效对磷不敏感基因型,BD2 属于磷低效对磷不敏感基因型,BX11 和GD2 属于磷低效对磷敏感基因型, BD1 属于磷高效对磷敏感基因型,GD3 和GD4 表现不稳定。从磷的利用效率(单位磷所产生的生物量)来看, 基因型间没有显著差异。说明即使在水培条件下, 磷利用效率对大豆总体磷效率贡献也不大, 大豆总体磷效率主要是由吸收效率决定的。与田间反应不同的是, 水培条件下磷吸收效率高的基因型, 具有较长的根长与较大的根表面积。说明在介质有效磷分布均匀的条件下, 根形态性状对磷吸收效率起一定的作用。
Abstract:
A nut rient solution ex periment w ith eight soybean genotypes w as carried out to study the mechanismsof soybean further in adaptation to low P st ress and to elucidate the relationship between these adaptive responsesin the f ield and in nutrient solution culture so as to provide valuable experimental data for rapid genetic improvementof P eff iciency in soy bean .The results indicated that there w as significant genotypic variation in P ef ficiencyamong the eight soybean geno types tested .Based on the overall P efficiency (defined as biomass)and P acquisitionef ficiency (defined as P co ntent), the results generally resemble those in the field ex periment .Geno typeBX10 and GD1 w ere P efficient but non -responsive ;genotype BD2 w as P inef ficient and non -responsive ;geno type BX11 and GD2 were P inefficient but responsive ;geno type BD1 w as P ef ficient and responsive ;theo ther geno types , GD3 and GD4 w ere unstable in the performance .Moreover , there w as no significant genotypicv ariation in P utilization efficiency (defined as biomass produced per uni t P content)among the eight soybeangeno types , indicating that P utilization eff iciency contributes less than P uptake ef ficiency to overall P eff iciencyof soy bean even under hy droponic condi tio ns .Therefo re , the overall P ef ficiency of soy bean w as mostly determinedby P acquisition efficiency even in nut rient solution culture .Differing f rom that in the field ex periment ,the P -efficient genotypes had relatively longer root leng th and larger root surface area in nutrient solut ion culture.This indicates that root mo rphological t raits mainly affect P acquisition efficiency under conditions w ith uniformdist ribution of available P in the g row th medium .

参考文献/References:

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备注/Memo

基金项目:本研究由美国麦氏基金会(McKni gh t Foundation)以及广东省科技计划项目(B504)资助。3

作者简介:王应祥,(1977 -), 男, 华南农业大学植物营养学专业在读研究生。

更新日期/Last Update: 2016-12-31