Bt Cotton was developed by Monsanto and it is now one of the most widely grown transgenic crops currently grown in many countries including United States, China, India, Australia, Argentina, South Africa and Indonesia. The adoption of Bt cotton has been rapid, from an estimated 0.8 million ...
目的是为了减少农药使用,但在实际推广过程中,造成了目标害虫抗性、对有益生物的生态毒性、对传粉昆虫不利影响以及不可预知的生态风险。 [2] KR Kranthi and Glenn Dais Stone, “Long-term impacts of Bt cotton in India”, Nature Plants, Volume 6, 2020,https://www.nature.com/articles/s41477-020-0615...
Bt cotton is a genetically modified pest-resistant plant cotton variety, which produces an insecticide to combat bollworm. This has been developed by inserting a bacterium gene (Bacillus thuringiensis or Bt) into cotton. Bt cotton was first approved for field trials in the United States in 1993 ...
Transgenic Bt cotton developed against lepidopteran pests may not be compatible with parasitoid of secondary pests such as Bemisia tabaci which attack many plants such as cotton. In this study, the effects of Bt cotton on the demographic parameters of Encarsia formosa, parasitoid of B. tabaci ...
1.Impacts of Bt cotton on host selection behavior of Helicoverpa armigera larvae;Bt棉花对棉铃虫幼虫选择性行为的影响 2.Three non-hybrid and two hybrid Bt cotton cultivars developed in Shandong province,as well as their control cultivar 33B,were grown and comparatively studied in 2002 and 2004.以...
4) Bt cotton Bt棉 1. Impacts of Bt cotton on host selection behavior of Helicoverpa armigera larvae; Bt棉花对棉铃虫幼虫选择性行为的影响 2. Three non-hybrid and two hybrid Bt cotton cultivars developed in Shandong province,as well as their control cultivar 33B,were grown and comparatively ...
For each target receptor gene, 10 to 40 G0 adults developed from injected eggs and were mass crossed with the susceptible WH-S strain to produce G1. We used exuviate-based PCR to screen 40 to 60 G1 adults for the specific insertion or deletion (indel) introduced by CRISPR in each of...
A popular protocol for sharing large files over the Internet, developed by Bram Cohen in 2001 and available for all major platforms. There is no centralized server. Each BitTorrent user becomes a source for another user who wants the same file. The BitTorrent client balances the load on the ...
in India. Though its next version, Herbicide Tolerant Bt (HtBT) Cotton, has not yet been approved for cultivation in the country, farmers in Maharashtra and a couple of other cotton-growing states have been cultivating it by defying existing ban on unapproved variety of transgenic cotton....
Farmers obtained the major share of benefits and because of weak intellectual property rights very little went back to government research institutes or foreign firms that developed these varieties. Farmers using Bt cotton reported fewer pesticide poisonings than those using conventional cotton. 展开 ...