[1]袁清华年 　 海　 陈达刚廖 　 红　 严小龙.大豆根系性状和磷效率的遗传规律研究*[J].大豆科学,2006,25(02):158-163,173.[doi:10.11861/j.issn.1000-9841.2006.02.0158]
　Yuan Qinghua Nian Hai Chen Dagan Liao Hong Yan Xiaolong.GENETIC ANALYSIS OF ROOT CHARACTRS AND THEIR RELATION TOPHOSPHORUS EFFLCIENCY IN SOYBEAN[J].Soybean Science,2006,25(02):158-163,173.[doi:10.11861/j.issn.1000-9841.2006.02.0158]
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大豆根系性状和磷效率的遗传规律研究*

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第25卷 期数: 2006年02期 页码: 158-163,173 栏目: 出版日期: 2016-05-25
Title:
GENETIC ANALYSIS OF ROOT CHARACTRS AND THEIR RELATION TOPHOSPHORUS EFFLCIENCY IN SOYBEAN
作者:
袁清华1年 　 海1　 陈达刚1廖 　 红2　 严小龙2
(1. 华南农业大学农学院 ;2. 华南农业大学根系生物学中心,广州 510642)
Author(s):
Yuan Qinghua Nian Hai 　 Chen Dagan Liao Hong 　 Yan Xiaolong
(Department of Plant Breeding , College of Agronomy , South China AgriculturalUniversity , Guangzhou 510642)
关键词:
大豆; 低磷土壤; 根系性状 ; 遗传分析
Keywords:
Soybean ; Low-phosphorus soil ; Root traits; Genetic analysis
DOI:
10.11861/j.issn.1000-9841.2006.02.0158
文献标志码:
A
摘要:
　 选用两个磷效率差异明显的大豆品种 ,在营养液(磷浓度为0, 50 μM KH 2 PO 4 )和田间(土壤有效磷含量 26 mg /kg)进行根系性状的遗传研究。结果表明 :两个基因型的根系性状存在显著差异,F 1 代的总根长和磷效率都表现出明显的超亲优势 ,其超亲优势率分别为 68 %和 56%;这些性状 F 2 代的为连续变异, 表现出多基因控制的特征 , 且都存在明显的超亲分离个体。遗传模型分析结果表明, 这些性状一般都为两对主基因加多个微效基因控制, 而且除根平均直径外(水培中无主基因存在),总根长和根体积的遗传模型在大田和短期营养液条件下基本一致。产量及生物产量与总根长、总表面积、平均直径、根体积和磷效率都呈极显著正相关 ,表明通过这两个性状也可以对根系和磷效率进行间接选择 。大田试验各根系性状和磷吸收效率的遗传力都较高, 因此在育种过程中对这些性状进行早代选择是可行的。
Abstract:
　 In this study , two contrasting soybean genotypes BD2 and BX10 from Guangdong and Brazilwere used and a cross between them was made to produce F 1 , F 2 progenies. The inheritance of soybean roottraits and relationship between the root and other traits were investigate by the experiments of nutrient so-lution and soil cultivation.The results showed that there were significant differences in most root traits between the two geno-types. Both of the total root length and P efficiency of F 1 showed significant over-parent heterosis and thevalue was 68 %and 56% respectively. T he distribution of these traits in F 2 were all continuous and seemed to controlled by multi-genes. Moreover , over-parent segregates were observed forthe traits. Further study indicated that most of the traits were controlled by two pair of major genes to-gether with other multi-genes. Except average root diameter (absent of major gene in solution culture),the genetic model of the total root length , surface area and volume in soil cultivation were coincident withthose in solution culture. Correlation analysis reveals that indirect are possible for root traits and P effi-ciency due to positive correlation between root traits and yield and biomass. Furthermore, because the her-itabilities of most root traits is high in soil cultivation so it is feasible to carry out progeny selection inbreeding programs.

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(McKnight Foundation)资助　

作者简介:袁清华(1978 -), 女, 在读博士生, 研究方向大豆重要性状的遗传育种。　

更新日期/Last Update: 2016-12-14