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Abstract
Prunella vulgaris is a gynodioecious species that forms two types of flowers, perfect and female, on different plants. These two sexual types of flowers have significant differences in some characters of calyx, corolla, androecium, and gynoecium. The distinctiveness of gynodioecy in P. vulgaris consists in insignificant size differences in anthers, the formation of sterile pollen in female flowers, and the shape of a corolla in two sexual types of flowers. Hermaphrodite plants are dominated in P. vulgaris (59.8 to 87 percent). In flood plain meadows, the proportion of females is significantly higher (from 25.9 to 40.2 percent) than in dry and forest meadows (from 13 to 19.1 percent).
Highlights
IntroductionA gynodioecy is a sexual dimorphism when there are two types of plants: hermaphrodite (with perfect flowers) and female (with pistillate flowers)
A gynodioecy is a sexual dimorphism when there are two types of plants: hermaphrodite and female
We studied the pollen of 50 perfect and 50 female flowers in three characters: equatorial diameter and polar axis of pollen grains, μm; pollen fertility, percentage
Summary
A gynodioecy is a sexual dimorphism when there are two types of plants: hermaphrodite (with perfect flowers) and female (with pistillate flowers). Gynodioecy is quite common in temperate flowering plants and is often found in the Lamiaceae. The gynodioecy in flowering plants, and in the Lamiaceae, in particular, consists in larger perfect and smaller female flowers [3]. Common Selfheal (Prunella vulgaris L., Lamiaceae) is a perennial herbaceous longrhizome or racemose polycarpic plants [4]. P. vulgaris is an assectator, found in pine, spruce-pine, birch forests, dry and forest meadows, and mesophytes. P. vulgaris grows in forests, wood margins and glades, coppices, dry meadows, sides of irrigation ditches, and shores of lakes [4]
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