Results 91 to 100 of about 13,014 (189)

Selection maintains floral color polymorphism in scarlet paintbrush, Castilleja coccinea, reflecting combined ecological factors

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Premise Evolutionary theory predicts polymorphism should be rare; however, intraspecific variation in floral color is common and can be attributed to genetic drift, plasticity, or variable selection. Examining floral color polymorphism both within contact zones and across a species' range can reveal the mechanisms maintaining this variation ...
Emma Fetterly   +6 more
wiley   +1 more source

Temperature and the evolution of flower color: A review

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Flower colors brighten our natural world. How and why have they evolved? How might ongoing global warming alter their evolutionary trajectories? In this review, I examine the influence of ambient temperature on the evolution of flower color.
Elizabeth P. Lacey
wiley   +1 more source

Sertula Florae Colombiae, XII

open access: yesCaldasia, 1971
La Tribu Blakeae es, entre las Melastomatáceas americanas, el grupo de más facil reconocimiento. Se caracteriza por flores axilares cada una provista de dos pares de brácteas desusadas, y secundariamente por las flores casi siempre 6-meras con anteras ...
Uribe Uribe Lorenzo
doaj  

Onagraceae Juss. [PDF]

open access: yes, 2017
Se aporta a la flora urbana del centro-oeste de Argentina. Se da a conocer la familia Onagraceae y los géneros Ludwigia, Clarkia, Oenothera, Fuchsia, con sus respectivas especies introducidas.Fil: Delugan, Monica Beatriz.
Delugan, Monica Beatriz   +1 more
core  

A mosaic of colors: The influence of biotic and abiotic factors shaping flower color diversity across a tropical mountain ecosystem

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Premise Flower color diversity within communities is shaped by biotic and abiotic factors. Pollinators often prefer specific colors, and floral pigments also help protect against abiotic factors such as ultraviolet (UV) radiation, precipitation, and temperature.
Maria Gabriela Gutierrez Camargo   +4 more
wiley   +1 more source

Haplodiploid androgenetic breeding in oat: genotypic variation in anther size and microspore development stage Melhoramento por haplodiploidização androgenética: variação genotípica no tamanho das anteras e no estágio de desenvolvimento dos micrósporos em aveia

open access: yesScientia Agricola, 2009
Oat (Avena spp.) is poorly responsive to the haplodiploidization process, which leads to the production of homozygous lines in one step, increasing breeding efficiency.
Taniela De Cesaro   +7 more
doaj   +1 more source

Butia eriospatha (Arecaceae): comportamento meiótico, palinologia e biometria de frutos [PDF]

open access: yes, 2015
TCC (graduação)- Universidade Federal de Santa Catarina. Campus Curitibanos. Agronomia.A espécie Butia eriospatha (Mart. ex Drude) Becc (Arecaceae) é nativa da região sul do Brasil e Uruguai e se encontra na lista de espécies brasileiras ameaçadas de ...
Jonas Rafael, Vargas
core  

Induksi Poliploid Pada Kultur Antera Lilium longiflorum Thunb.

open access: yesBiofaal Journal
Poliploidisasi memiliki peranan penting dalam upaya pemuliaan beberapa tanaman hias, seperti pada bunga lili (Lilium sp.), dengan tujuan untuk menghasilkan bunga yang berukuran lebih besar dengan tangkai perbungaan yang lebih kokoh. Poliploid dapat diinduksi dengan senyawa colchicine pada waktu perendaman tertentu.
Iriawati Iriawati, Anggraeni Anggraeni
openaire   +1 more source

Regenerasi Tanaman pada Kultur Antera Beberapa Aksesi Padi Indica Toleran Aluminium

open access: yesJurnal AgroBiogen, 2006
<p class="p1">Anther culture provides the quick route in obtaining pure lines in a single generation from either green haploid plant that may be artificially or spontaneously doubled. Indica rice known as recalcitrant genotype because of its difficulty in regenerating sufficient number of green plantlets among the regenerated plants through ...
Iswari S. Dewi   +4 more
openaire   +2 more sources

Effects of Autologous Blood‐Derived Extracellular Vesicles on Skin Regeneration and Anti‐Aging: A Clinical Study

open access: yesJournal of Cosmetic Dermatology, Volume 25, Issue 1, January 2026.
ABSTRACT Introduction Autologous blood‐derived extracellular vesicles (EVs) have gained attention as a novel therapeutic approach for skin rejuvenation. This study evaluates their efficacy in improving wrinkles, lifting, hydration, barrier function, tone, radiance, texture, and pore size in human subjects.
Hwansu Kang   +6 more
wiley   +1 more source

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