FUNCTION OF MENTZELIA NUDA (LOASACEAE) POSTFLORAL NECTARIES IN SEED DEFENSE
FUNCTION OF MENTZELIA NUDA (LOASACEAE) POSTFLORAL NECTARIES IN SEED DEFENSE
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MENTZELIA NUDA（Loasaceae）花后蜜腺在种子防御中的功能
DOI：
10.1002/j.1537-2197.1981.tb12389.x
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发表时间：
1981
影响因子：
3
通讯作者：
K. Keeler
中科院分区：
文献类型：
--
作者：
K. Keeler
Mentzelia nuda是北美高平原的一种粗糙，短命的多年生植物。花分泌的花蜜可以吸引授粉的蜜蜂。花后花蜜分泌吸引蚂蚁，蚂蚁的存在显著提高种子的形成。这是第一次证明花蜜腺对花后活动有利。最近对花外蜜腺（通常称为“花外蜜腺”）的研究表明，它们与花蜜腺一样，参与植物-昆虫互惠共生。花蜜腺通过奖励传粉者促进异交，花外蜜腺吸引昆虫，特别是蚂蚁，它们的活动减少了食草动物对植物的损害（Bentley，1977 a，B; Deuth，1977; Keeler，1977，1980; Tilman，1978; Inouye和Taylor，1979; Koptur，1979; O 'Dowd，1979; Pickett和Clark，1979）。花花蜜在花蜜含量上变化很大
Mentzelia nuda is a coarse, short-lived perennial of the High Plains of North America. The flowers secrete nectar which serves as an attractant for pollinating bees. Postfloral nectar secretion attracts ants whose presence significantly enhances seed set. This is the first demonstration of advantage to postflowering activity of a floral nectary. RECENT STUDIES of nectaries that lie outside the flower (generally called "extrafloral nectaries") indicate that, like floral nectaries, they are involved in plant-insect mutualism. Whereas floral nectaries facilitate outcrossing by rewarding pollinators, extrafloral nectaries attract insects, especially ants, whose activities decrease herbivore damage to the plant (Bentley, 1977a, b; Deuth, 1977; Keeler, 1977, 1980; Tilman, 1978; Inouye and Taylor, 1979; Koptur, 1979; O'Dowd, 1979; Pickett and Clark, 1979). Floral nectar varies greatly in nectar content