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- Title
抗草甘膦转基因大豆与内蒙古包头野大豆杂交 F<sub>2</sub> 适合度分析.
- Authors
纪雪勤; 刘金悦; 胡玉琪; 盛泽文; 强胜; 宋小玲
- Abstract
[Objectives]The research aimed to explore the the potential ecological risks of gene flow via pollen from herbicide-resistant transgenic soybean to wild soybean. [Methods]The F2, obtained by the self-pollination of the F1, which was crossed artificially between glyphosate-resistant transgenic soybean TS(male parent)and wild soybean WS(female parent)from Baotou, Inner Mongolia, was used to study its fitness under two kinds of soil wasteland and farmland, and two planting conditions, competition with weeds and non-competition with weeds. Meanwhile, the seed coat structure of self-pollinated seeds of F2 with different hard seededness was observed. [Results]The emergence rate of F2 was 75.00%, which was significantly higher than that of WS, but lower than that of TS. Under the four conditions, F2 was significantly lower than WS on the number of pods per plant and the number of filled seeds per plant; except that F2 was lower than TS under farmland competed with weeds, F2 was greater than TS or similar to TS under other three conditions. The plant height, 100-seed weight and above-ground dry biomass of F2 were significantly higher than those of WS, but lower than those of TS. The self-pollinated seeds of F2 showed an obvious differentiation in seed coat color and hard-seededness, and the opening degree of the hilum of these seeds of F2 and whether there were concave pores on the seed coat surface were the key factors which affected hard seededness. [Conclusions] F2 could complete the life cycle and produce filled seeds. Once the pollen of transgenic soybean escapes to wild soybean and produces hybrid offspring, the hybrid may survive and colonize in the natural environment.
- Subjects
INNER Mongolia (China); LIFE cycles (Biology); WEED competition; ANIMAL coloration; GENE flow; SOYBEAN; HERBICIDE-resistant crops
- Publication
Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao, 2023, Vol 46, Issue 4, p698
- ISSN
1000-2030
- Publication type
Article
- DOI
10.7685/jnau.202212018