Therefore, we claim the reason of the failure of seed production of the seed orchard is caused by the abortion of male strobili in the orchard and without mature tree around the orchard.

• 上述结果显示雌毬花至少有一部份胚珠的健康状况足以生产种子，故本种子园无法生产种子园的原因为花粉败育及邻近缺乏花粉源所致。