We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Impact of spraying glyphosate on yield component and resistance genetics of glyphosate - tolerant soybean at two - trifoliolate leaf stage.
- Authors
LIU Wen-juan; LIU Yong; SONG Jun; GUO Ling-an; CHANG Li-juan; ZHANG Fu-li; WANG Dong; YIN Quan; ZHAO Hong-yang; LEI Shao-rong
- Abstract
The objective of this study is to research the impact of glyphosate on yield component and resistance genetics of glyphosate - tolerant soybean and to provide a statistical basis for applying glyphosate effectively to con-trol weed. The random complete block design was used and the influence of spraying 41% glyphosate isopropyl am-monium AS at different rates on yield component and transgenic ratio of transgenic soybean cultivar GTS 40-3-2 at V2 stage was studied in the field. The following year, the glyphasate resistance and yield component of first filial generation soybean affer applying glyphosate in the same concentration rates were investigated. The resull indicated that glyphosate was effective at 1. 23 - 12. 30 kg(ai) hm-2 to control weed. However, the glyphosate at 7. 38 -12. 30kg(ai) hm-2 markedly reduced the number of seed and seeds weight per plant of soybean parents and prog-eny. Spraying glyphosate had no obvious impact on the quantity of genetically modified ingredient ( GM% ) in seeds of GTS 40 - 3 - 2, which induced the first filial generation soybean with the same glyphosate tolerance as their par-ents. It was concluded that spraying glyphosate at 1. 23 -4. 92 kg (ai) hm-2 was available for weeding control as well as maintaining the yield component of GTS 40 - 3 - 2, which could be safe to use at V2 stage of the glyphosate - tolerant soybean. Application of glyphosate above 7. 38 kg (ai) hm-2 depressed the seed number but did not af-fect the seed mass of GTS 40 -3 -2. Spraying glyphosate did not have obviously negative influence on the genetics of resistance to glyphosate of GTS 40 -3 -2. Glyphosate could be used to weed control with recommended rate when the first filial generation of GTS 40-3-2 was cultivated.
- Subjects
GLYPHOSATE; CROP yields; CROP genetics; SOYBEAN; LEAF physiology; TRANSGENIC plants; SEED physiology
- Publication
Chinese Journal of Oil Crop Sciences, 2013, Vol 35, Issue 6, p697
- ISSN
1007-9084
- Publication type
Article
- DOI
10.7505/j.issn.1007-9084.2013.06.013