Stpiczyńska Młgorzata
Department of Botany, Agricultural University in Lublin, ul. Akademicka 15, 20-950 Lublin, Poland.
Ann Bot. 2003 Aug;92(2):191-7. doi: 10.1093/aob/mcg124. Epub 2003 Jun 12.
Flowering and nectar secretion were studied in Platanthera chlorantha in two years. Nectar was secreted and accumulated in this orchid's spur, originating from part of the labellum. The nectary spur was, on average, 32 mm long. It produced 6.86 micro l nectar in 1999 and 7.84 micro l in 2000. The number of flowers per inflorescence and the volume of nectar secreted per flower were not correlated. Nectar secretion and flower longevity differed depending on pollination and flower position in the inflorescence. Among pairs of pollinated and unpollinated flowers there was no difference in the volume of nectar produced; however, the life span of pollinated flowers was shorter than that of unpollinated ones. Within an inflorescence, the lowest-positioned flowers had the largest nectar production and the longest life compared with flowers positioned higher up.
对绿花杓兰的开花和花蜜分泌情况进行了为期两年的研究。花蜜在这种兰花的距中分泌并积累，距源自唇瓣的一部分。蜜距平均长32毫米。1999年它分泌6.86微升花蜜，2000年分泌7.84微升。每个花序的花朵数量与每朵花分泌的花蜜量不相关。花蜜分泌和花朵寿命因授粉情况和花序中花朵的位置而异。在授粉花和未授粉花之间，产生的花蜜量没有差异；然而，授粉花的寿命比未授粉花短。在一个花序中，与位置较高的花朵相比，位置最低的花朵花蜜分泌量最大且寿命最长。
