open pollination

常见例句

The seed-mainatined plot is appraised continuously by the mode selection, and propagated mixedly under the open-pollination condition.
应用众数选择对保种圃进行连续鉴定，并在开放授粉条件下混合繁殖。
Through analysis of open pollination progeny test in clonal seed orchard of Pinus koraiensis, some(parameters)have been obtained, such as hereditability and genetic gain etc.
通过对红松无性系种子园自由授粉子代进行测定分析，得出遗传力、遗传增益等参数，为红松遗传改良提供理论依据。
Though the solutions with 4.0% sugar and 1.0% salt might keep pollen activity in some area, they showed distinctly negative effect in model multiplication field and open pollination test.
而4.0%糖介质和1.0%盐介质对模拟制种田辅助授粉和开放授粉处理却表现显著的负效应。