Asymmetrical mating patterns and the evolution of biased style-morph ratios in a tristylous daffodil
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چکیده
منابع مشابه
Asymmetrical mating patterns and the evolution of biased style-morph ratios in a tristylous daffodil.
Non-random mating in plant populations can be influenced by numerous reproductive and demographic factors, including floral morphology and inter-plant distance. Here, we investigate patterns of outcrossed mating through male function in Narcissus triandrus, a tristylous, bee-pollinated wild daffodil from the Iberian Peninsula, to test pollen transfer models which predict that floral morphology ...
متن کاملGeographic variation in floral morphology and style-morph ratios in a sexually polymorphic daffodil.
Narcissus triandrus is a tristylous daffodil from the Iberian Peninsula that has striking geographical variation in floral morphology and style-morph ratios. Here, we investigate the relation between this variation and ecological factors to understand mechanisms governing morph ratios. We estimated morph ratios in 124 populations throughout the range of N. triandrus and measured 13 morphologica...
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BACKGROUND AND AIMS In heterostylous plant species, skewed morph ratios are not uncommon and may arise from a range of factors. Despite the recognized importance of skewed morph ratios on overall reproductive success within populations, little is known about the impact of skewed morph ratios on population genetic diversity and differentiation in heterostylous species. This study specifically ai...
متن کاملFemale reproductive success and the evolution of mating-type frequencies in tristylous populations.
In tristylous populations, mating-type frequencies are governed by negative frequency-dependent selection typically resulting in equal morph ratios at equilibrium. However, Narcissus triandrus generally exhibits long-styled (L)-biased populations with a deficiency of the mid-styled (M)-morph. Here we used a pollen-transfer model and measurements of female fertility in natural populations to inv...
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abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
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ژورنال
عنوان ژورنال: Genetics Research
سال: 2008
ISSN: 0016-6723,1469-5073
DOI: 10.1017/s0016672307008956