strobilus

Analysis on the variation of female-male flowers and strobilus production of clonal seed orchard of Pinus tabulaeformis carr .

油松无性系种子园雌雄球花量及球果量变异分析。

Result is as follows : In the middle of October , the primordium of ovulate strobilus occurred , its occurrence time varied between different aged ramets and different occurrence part .

结果表明：雌球果原基发生时间为10月中旬，不同的树龄和着生部位，其发生时间不同。

It takes 14 months from differentiation of female strobilus to formation of mature embryo .

太白红杉从花芽分化到胚胎成熟历时14个月。

The probability of any air-borne pollen grain impacting a female strobilus is in any case very small .

任何在空气中飘浮的花粉粒粘着于雌球花的几率，在任何情况下都是很小的。空气中有浓郁的花香。

It lasted for more than four months from initiation of the ovulate strobilus to formation of anatropous ovules .

从雌球果原基发生到胚珠分化历时4个多月。

In addition , the relationship between strobilus spatial distribution and lighting is discussed and some initial suggestions about pruning ard thinning in the seed orchard are presented .

作者讨论了油松树冠受光环境与雌雄球花空间分布的关系，提出了油松种子园无性系整形修剪的初步设想。

The successive 7 year observation on seed setting habit for Pinus massoniana seed stand was carried out , results show : ( 1 ) Flowering period ranged from 10 to 15 days , but the flowering period of male and female strobilus are overlapped ;

通过对马尾松母树林7a的观测资料分析表明：（1）马尾松花期为10～15d，雌雄球花的散粉期与受粉期大致同步；