|Table of Contents|

Fitness of Hybrids between Wild Soybeans (Glycine soja) and the Glyphosate-resistant Transgenic Soybean (Glycine max)(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2015年02期
Page:
177-184
Research Field:
Publishing date:

Info

Title:
Fitness of Hybrids between Wild Soybeans (Glycine soja) and the Glyphosate-resistant Transgenic Soybean (Glycine max)
Author(s):
KAN Gui-zhen;  TONG Zhen-feng;  HU Zhen-bin;  MA De-yuan;  ZHANG Guo-zheng;  YU De-yue
Soybean Research Institute of Nanjing Agricultural University, National Center for Soybean Improvement / National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing 210095, China
Keywords:
Wild soybean;  Glyphosate-resistant transgenic soybean;  Hybrids;  Fitness
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2015.02.0177
Abstract:
Wild soybeans are important resources for soybean genetic improvement. The potential agricultural and ecological risk of transgenic soybeans may pose a threat to wild soybeans. Transgene escape from glyphosate-resistant, transgenic soybeans to wild soybeans also lies on the fitness of hybrid offspring except for successful cross. Therefore, analysis on the fitness of hybrids between wild soybeans and glyphosate-resistant transgenic soybeans is essential to assess environmental consequences caused by glyphosate-resistant transgene escape. In this study, F1?hybrids carrying the glyphosate resistance gene were obtained from crosses between four wild soybean and the glyphosate-resistant transgenic soybeans RR and reared under the net house conditions. Then, F2 .hybrids were derived from the cross between the wild soybean JPWS-5 and RR. Seven agronomic traits were measured in both hybrids and wild female soybeans. The relative fitness of the hybrids and wild females were analyzed by t-test. In the absence of glyphosate, we found that the hybrids between wild soybeans and RR had the relative fitness advantage of some traits to the wild female soybeans. The analysis on the fitness of F2?hybrids between JPWS5 and RR showed that there was no difference in the fitness for the seven agronomic traits between F2hybrids carrying the glyphosate resistance gene (F+2) and F2. hybrids without the glyphosate resistance gene (F-2). The results can provide scientific experimental data and theoretical support for safety assessment of transgenic soybeans and the protection of wild soybeans.

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Last Update: 2015-06-07