Altitudinal differences in flower traits and reproductive allocation
نویسندگان
چکیده
منابع مشابه
Altitudinal differences in flower traits and reproductive allocation
We tested whether alpine plants increase their effort to attract pollinators to compensate for assumed pollinator scarcity at high altitude. A three times larger fraction of the shoot was allocated to flowers in alpine plants (30 species, 2700 m asl) compared to lowland plants (20 species, 600 m asl), while leaf mass fraction did not differ between the altitudes. At high elevation, a three time...
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BACKGROUND AND AIMS Determining the sources of variation in floral morphology is crucial to understanding the mechanisms underlying Angiosperm evolution. The selection of floral and reproductive traits is influenced by the plant's abiotic environment, florivores and pollinators. However, evidence that variations in floral traits result from mutualistic interactions with insects other than polli...
متن کاملGender Differences in Reproductive and Physiological Traits in a Gynodioecious Species, Geranium Maculatum (geraniaceae)
Plant species with separate genders often exhibit gender differences in traits related to reproductive allocation. In gynodioecious species, females often produce more seeds than do hermaphrodites, leading to a higher reproductive cost. The mechanisms that allow females to meet the high costs of reproduction are currently under debate. In this study, we test the hypothesis that there are geneti...
متن کاملSex-Related Differences in Reproductive Allocation, Growth, Defense and Herbivory in Three Dioecious Neotropical Palms
BACKGROUND Frequently, in dioecious plants, female plants allocate more resources to reproduction than male plants. Therefore it is expected that asymmetrical allocation to reproduction may lead to a reproduction-growth tradeoff, whereby female plants grow less than male plants, but invest more in defenses and thus experience lower herbivory than male plants. METHODOLOGY/PRINCIPAL FINDINGS We...
متن کاملFlower, fruit phenology and flower traits in Cordia boissieri (Boraginaceae) from northeastern Mexico.
We characterized variations in Cordia boissieri flowers and established if these variations occur between plants or between flowering events. Flowering and fruiting was measured for 256 plants. A GLM test was used to determine the relationship between flowering and fruit set processes and rainfall. We performed measurements of floral traits to detect variations within the population and between...
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ژورنال
عنوان ژورنال: Flora - Morphology, Distribution, Functional Ecology of Plants
سال: 2004
ISSN: 0367-2530
DOI: 10.1078/0367-2530-00128