http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Persistence, Viability and Emergence Rate of Canola (Brassica napus L) in Korean Soil
Mirjalol Umurzokov,WeiQiang Jia,조광민,Botir Khaitov,손수인,조진웅,박기웅 한국잔디학회 2019 Weed & Turfgrass Science Vol.8 No.4
Estimation of seed persistence, viability and identifi cation of emergence of canola seeds by depth of burial in the soil were the main purposes of this study. One hundred canola seeds were buried at 5, 25, and 30 cm depth of the soil in April and July 2018 at the confined field trials of Chungnam National University, Daejeon, South Korea. Eight removal dates were replicated three times. Burial seeds were exhumed and then intact seeds were tested for germination at monthly intervals. The viability of non-germinated intact seeds was determined by tetrazolium test. The seeds, which were buried at 30 cm depth, could persist longer than the seeds had been buried at 5 and 25 cm. As seeds were buried longer period, intact and dormant seeds were less and deteriorated seeds were more. With regard to emergence of canola, seeds were seeded at diff erent depth of soil and recorded its emergence rate 21 and 28 days after seeding under glasshouse and field conditions respectively. The greatest number was observed when seeds were at 1 cm depth. Seeds did not emerge beyond 13 and 11 cm depth of soil under glasshouse and fi eld conditions respectively. The results of this study will also be useful for future studies of biology and ecology of transgenic canola. However, the persistence of viable canola seeds in Korea is barely understood and further research is needed.
Alternative Herbicides to Manage Unintentionally Released Transgenic Canola
Mirjalol Umurzokov,정인호,Farrukh Ruziev,보보,WeiQiang Jia,레티현,Botir Khaitov,조광민,김윤하,이훈복,조진웅,손수인,박기웅 한국잔디학회 2019 Weed & Turfgrass Science Vol.8 No.2
One of the main concern of transgenic crops is unintentional release of unwanted gene or genes through pollen-mediated gene flow. Since 2009, transgenic canola (Brassica napus) contained herbicide resistant gene is being unintentionally released into the Korean ecosystem. This study was conducted to identify alternative herbicides to eliminate transgenic canola under greenhouse and field conditions in 2018 and 2019, Daejeon South Korea. Four pre- and five post-emergence herbicides were used at 1x and 2x recommended rates as a chemical treatment. The growth parameters of the trial plant and control efficacy of the herbicides determined separately according to the application method (pre and post) and experimental condition (greenhouse and field). Except glufosinate-ammonium, all the post-emergent herbicides including bentazone, fluthiacet-methyl, MCPA and bentazone sodium had almost 100% canola control efficacy at both 1x and 2x recommended rates. Regarding the pre-emergence herbicides, dichlobenil and oxyfluorfen showed a full control efficacy at both 1x and 2x recommended rates. It is worth noted that when linuron was applied, although some of the seeds were germinated, a gradual death was observed. While, s-metolachlor was not suggested to manage the canola as a chemical control because of its very low efficacy on this plant.