Since 2009, deployment of full-sib families of loblolly pine (Pinus taeda L.) has gained prominence in the southeastern United States. To produce full-sib seed, a pollination bag is used to isolate female strobili from outside pollen contamination, and a known pollen is applied at the time of maximum female strobilus receptivity. The goal of this study was to compare prototype pollination bags made by PBS International to the industry standard kraft paper pollination bag with and without a support wire for female strobili survival and to assess their efficiency for mass production of controlled cross loblolly pine seed. A multiyear study compared 13 pollination bag types at more than nine seed orchard sites across the southeastern United States. There were significant differences among bag types for conelet survival at the time of bag removal that persisted until cone harvest 18 months later. Female strobili bagged in prototype PBS-I2 were over three times more likely to survive to cone harvest than strobili inside the traditional kraft pollination bag. Two of the PBS bag types had the highest estimated filled seed per bag. One PBS bag was faster to install and remove than the kraft paper bag with a support wire.

中文翻译：

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授粉袋类型对火炬松可控传粉种子批量生产中的锥体成活有重要影响

自2009年以来，全同胞火炬松（Pinus taedaL.）在美国东南部倍受关注。为了生产全同胞种子，使用授粉袋将雌性可育球菌与外部花粉污染隔离开来，并在雌性对球藻的最大接受度时使用已知的花粉。这项研究的目的是将PBS International生产的原型授粉袋与带有或不带有支持线的女性牛皮纸授粉袋的工业标准牛皮纸授粉袋进行比较，并评估其大规模生产可控交叉火炬松种子的效率。一项多年研究比较了美国东南部超过9个种子园地点的13种授粉袋类型。取出袋时，直至锥果收获持续18个月，袋类型之间的锥虫存活率存在显着差异。装在原型PBS-I2中的雌性可育球果存活率比传统牛皮纸授粉袋中的可育球果高三倍。每个袋中的两种PBS袋估计填充种子最高。与带有支撑线的牛皮纸袋相比，一个PBS袋的安装和拆卸速度更快。