Heterosis of Soybean Isoflavone Content in Interspecific Hybridization(PDF)

¡¶´ó¶¹¿Æѧ¡·[ISSN:1000-9841/CN:23-1227/S]

Issue:

2012Äê02ÆÚ

Page:

203-207

Research Field:

Publishing date:

Info

Title:

Heterosis of Soybean Isoflavone Content in Interspecific Hybridization

Author(s):

BI Ying-dong¹; LI Wei¹; LIN Hong²; XIAO Jia-lei¹; LI Wan¹; YANG Xue-feng²; LAI Yong-cai¹

1.Institute of Crop Tillage and Cultivation,Heilongjiang Academic of Agricultural Sciences,Harbin 150086;

2.Crops Breeding Institute,Heilongjiang Academy of Agricultural Sciences,Harbin 150086,Heilongjiang,China

Keywords:

Soybean¡²Glycine max (L.) Merr.¡³; Isoflavone; Heterosis

PACS:

S565.1

DOI:

10.3969/j.issn.1000-9841.2012.02.009

Abstract:

In order to analyze heterosis of isoflavone content in interspecific hybridization,33 hybridized combinations were obtained by 15 accessions of Glycine max and Glycine soja which were different in isoflavone content(high,middle and low).Isoflavone concentrations of F₁,F₂ as well as their parents were determined by high performance liquid chromatography.Fifteen combinations which accounted for 45.5% of total had positive mid-parent heterosis.Twelve combinations showed positive over-parent heterosis,among which,five combinations had higher isoflavone content in female parent.Among 18 combinations between Glycine max and Glycine soja,11 had positive over-parent heterosis and 13 had mid-parent heterosis.Results suggest heterosis of isoflavone content were obvious when parents with higher isoflavone content were selected or interspecific hybridization were conducted.Heterosis of isoflavone content in 14 interspecific hybridization combinations showed inbreeding depression in F₂ generation.Therefore,it is essential to do further selection in following generations for high isoflavone breeding.

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