此外，大部分雌苏铁球果的结构似乎与风直接授粉不一致。
Furthermore, the structure of most female cycad cones seems inconsistent with direct pollination by wind.
过去的几年里，授粉已经在报纸的头条，因为它直接影响到地球上粮食的供应。
Pollination has been in the headlines for the past few years because it directly affects the food supply on Earth.
因此，这种螺旋形安排不太可能是对风授粉的一种直接适应所带来的结果。
Therefore , the spiral arrangement is not likely to be the result of a direct adaptation to wind pollination .
的生物学特点，实践上常采用不套袋杂交授粉技术，理论分析和间接检测结果证明这种杂交授粉方式的花粉污染率低于1% ，但到目前为止仍缺乏直接的检测证据。
Theoretical analysis and indirect detection indicated that the pollen contamination rate of this pollination technique was no higher than 1%. But there is no evidence from direct detection by now.
的生物学特点，实践上常采用不套袋杂交授粉技术，理论分析和间接检测结果证明这种杂交授粉方式的花粉污染率低于1% ，但到目前为止仍缺乏直接的检测证据。
Theoretical analysis and indirect detection indicated that the pollen contamination rate of this pollination technique was no higher than 1%. But there is no evidence from direct detection by now.
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