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Gene flow and spontaneous seedling establishment around genetically modified eucalypt plantations
New forests ( IF 2.2 ) Pub Date : 2020-06-26 , DOI: 10.1007/s11056-020-09800-7
Paulo Henrique Muller da Silva , Othon Silva Abrahão

Gene flow from an experimental plot of genetically modified eucalypt was studied by measuring pollen dispersal at various distances from the pollen donor up to a maximum distance of 1592 m. Spontaneous seedling establishment around mother trees, the potential receptors of GM pollen, was also verified. All trees analyzed in this study were identified as compatible for crossing with the pollen donor and their flowering time frame showed at least two weeks synchronism with GM pollen donors. As reported in previous studies, pollination occurred at short distances then declined rapidly within 200 m. The results obtained are consistent with data from other reports in different conditions. In the current study, only two GM seedlings out of 574 were detected at distances greater than 300 m from source (one at 400 and the other at 857 m), in rates varying from zero to 1.5% until 857 m, and null above this. Although effective GM crossings were found in compatible trees around the pollen donors, no spontaneous seedling establishment was observed.



中文翻译:

转基因桉树人工林周围的基因流和自发幼苗的建立

通过测量从花粉供体到最大距离1592 m的不同距离处的花粉散布,研究了转基因桉树实验区的基因流。还证实了母树周围的自发幼苗生长,这是转基因花粉的潜在受体。在这项研究中分析的所有树木均被确定为可与花粉供体杂交,并且开花时间框架显示与转基因花粉供体至少有两周同步。如以前的研究报道,授粉发生在短距离,然后在200 m内迅速下降。获得的结果与不同条件下其他报告的数据一致。在目前的研究中,在距源头大于300 m的距离中仅检测到574个中的两个GM幼苗(一个在400处,另一个在857 m),直到857 m为止的比率从零到1.5%不等,并且在此之上无效。尽管在花粉供体周围的相容树中发现了有效的转基因杂交,但未观察到自发的幼苗生长。

更新日期:2020-06-26
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