Production and Assessment of Potato Material Resistant to the Broadleaf Herbicide Bentazone
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Production and Assessment of Potato Material Resistant to the Broadleaf Herbicide Bentazone Bo Tao 1 & Shiqi Sun 1 & Lili Zhang 1 & Jing Guo 1 & Baihui Shao 1 Received: 23 June 2020 / Accepted: 1 September 2020/ # European Association for Potato Research 2020
Abstract In potato cultivation, the problem of controlling broadleaf weeds could be solved with the production of plants resistant to the broadleaf herbicide bentazone. Plant tissue culture technology and herbicide screening technology were used to select bentazoneresistant potato materials and to analyse the physiological and biochemical characteristics of their resistance. Potato microtubers were used as explants. Results showed that the optimum medium for screening the resistance was the Murashige and Skoog medium + 1 mg/L indoleacetic acid + 4 mg/L zeatin + 60 mg/L bentazone (pH 5.8). Forty-one regenerated buds were obtained by screening culture. After treatment with 48% bentazone aqueous solution (700 mg/L and 1296 g a.i./ha), one resistant product was obtained. Exposure to bentazone (1296 g a.i./ha) reduced the physiological indices of both the resistant and control potato plants. However, compared with control, the photosynthetic indices and acetyl-CoA carboxylase activity of resistant selection only decreased slightly and increased significantly from the lowest level, and the content of malondialdehyde, an indicator of plant stress, was also less affected. Keywords Bentazone-resistant potato . Herbicide resistance mechanisms . Herbicide
resistance screening . Plant tissue culture
* Lili Zhang [email protected] Bo Tao [email protected] Shiqi Sun [email protected] Jing Guo [email protected] Baihui Shao [email protected]
1
Agricultural College, Northeast Agricultural University, Harbin 150030 Heilongjiang, People’s Republic of China
Potato Research
Introduction Among the six major crops cultivated worldwide (maize, rice, wheat, potato, cassava and soybean), potato (Solanum tuberosum L.) is the fourth most cultivated plant and plays a vital role in peoples’ daily life and the national economy (Ahmad et al. 2008; Li et al. 2016). Weeds are plants that are out of place and not intentionally sown. Weeds are troublesome in several ways, primarily by reducing the crop yield by competing for water, sunlight and nutrients, resulting in huge economic losses to agricultural production (Zuo 2017). There are several types of weeds in potato fields, primarily broadleaf weeds, and weed damage has become one of the major problems in potato production (Boydston 2010). In the early days of cultivation, the potato planting area was small, and weed control primarily depended on manual and mechanical weeding methods such as hand hoeing and pulling, mowing, burning and machine tillage, which were then feasible. As the size of planting area increased, the use of herbicides became an important method of weed control in potato fields (Nikolić et al. 2013). Bentazone is a chemical manufactured by the BASF Company that is used as a selective post emergence herbic
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