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Evaluation of Pollen-Mediated Gene Flow from Purple-Colored Maize Line during Co-Cultivation with Yellow-Grain Maize Lines
Russian Journal of Genetics ( IF 0.6 ) Pub Date : 2020-10-09 , DOI: 10.1134/s1022795420090082
Yu. S. Gusev , I. V. Volokhina , E. M. Moiseeva , O. V. Gutorova , M. I. Chumakov

Abstract

In this paper, we consider the pollen-mediated gene flow of purple-colored maize lines during co-cultivation with yellow-grain pollen-recipient maize lines. We analyze the factors influencing pollen dispersion: wind (speed and direction), distance, the synchrony of the pollen donor and receptor flowering. It was established that the maximum percentage of crosses in maize lines with the same flowering dates was recorded at the distance of 1–4 m from the donor plant. The percentage of crosses decreased by a factor of 5 with an increase in the distance to 10 m. At a distance of 40 m from the donor plant, the percentage of hybrid grains among the freely pollinated grains of the recipient plant fell by a factor of 12.5. At close distances (1–4 m), hybrid grains on the cobs of the recipient lines were observed 4 times longer in the line with earlier flowering periods or in the line with the same flowering times, but with a sharper angle of leaves. According to our experimental data, at a distance of 10 m from the maize of a pollen donor, the guaranteed does not exceed the Russian threshold of 0.9% of the presence of GMO products in food (yield). The analysis of experiments on maize spreading with pollen in Volga region of Russia provides evidence-based recommendations for safe co-cultivation of non-GM and GM varieties and maize lines at the distance 10 m.



中文翻译:

与黄粒玉米共培养紫色玉米花粉介导的基因流评估

摘要

在本文中,我们考虑了在与黄粒花粉受体玉米杂交培养的同时,紫色玉米株系的花粉介导的基因流动。我们分析了影响花粉分散的因素:风(速度和方向),距离,花粉供体的同步性和受体开花。已经确定,在距供体植物1-4 m的距离处记录了开花日期相同的玉米品系中杂交的最大百分比。随着距离增加到10 m,十字架的百分比减少了5倍。在距供体植物40 m处,受体植物的自由授粉谷粒中杂种谷粒的百分比降低了12.5倍。在近距离(1-4 m)处,在较早开花的时期或在相同开花时间的品系中,观察到受体品系的穗轴上的杂种谷物长4倍,但叶片角度更锐利。根据我们的实验数据,在距花粉供体的玉米10 m的距离处,保证的含量不超过食品中GMO产品存在量的0.9%的俄罗斯阈值(产量)。俄罗斯伏尔加河地区玉米花粉传播试验的分析为非转基因和转基因品种与玉米品系在10 m距离的安全共生提供了基于证据的建议。保证的价格不超过俄罗斯规定的食品中转基因产品含量的0.9%(产量)的阈值。俄罗斯伏尔加河地区玉米花粉传播试验的分析为非转基因和转基因品种与玉米品系在10 m距离的安全共生提供了基于证据的建议。保证的价格不超过俄罗斯规定的食品中转基因产品含量的0.9%(产量)的阈值。俄罗斯伏尔加河地区玉米花粉传播试验的分析为非转基因和转基因品种与玉米品系在10 m距离的安全共生提供了基于证据的建议。

更新日期:2020-10-11
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