Results 111 to 120 of about 38,685 (294)
Novelty for the flora of Espírito Santo, Brazil: a new species of Ouratea Aubl. (Ochnaceae)
Nordic Journal of Botany, EarlyView.Here, we describe and illustrate the new species Ouratea oberdanii Fraga & Deccache, which is named after Dr Oberdan José Pereira. This new species is found in the mountainous regions of the evergreen Atlantic Forest in the Brazilian state of Espírito Santo. Ouratea oberdanii is similar to O. linearis (A.Gray) Sastre & Offroy and O.
Lara Serpa Jaegge Deccache +4 more
wiley +1 more source
Scientific Reports, 2017 Apposite development of anther and its dehiscence are important for the reproductive success of the flowering plants. Recently, bHLH142, a bHLH transcription factor encoding gene of rice has been found to show anther-specific expression and mutant ...
R. Ranjan +6 more
semanticscholar +1 more source
A new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae)
Nordic Journal of Botany, EarlyView.Revisions of herbarium collections reveal a new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae). Strophopappus comprises nine species occurring in South America, eight of which are endemic to Brazil. Currently, Vernonia riedeliana is treated as a synonym of Strophopappus bicolor.
Danielle Remor +2 more
wiley +1 more source
Fine regulation of ARF17 for anther development and pollen formation
BMC Plant Biology, 2017 In Arabidopsis, the tapetum and microsporocytes are critical for pollen formation. Previous studies have shown that ARF17 is expressed in microsporocytes and tetrads and directly regulates tetrad wall synthesis for pollen formation.
Bo Wang +8 more
semanticscholar +1 more source
Pavonia fretensis sp. nov. (Malvaceae) from the Horn of Africa hotspot
Nordic Journal of Botany, EarlyView.The new species Pavonia fretensis is described, illustrated by photographs and mapped. It occurs in coastal localities on both sides of the Bab al Mandab Strait and is known from southern Yemen, Eritrea and northwestern Somalia. The species differs from Pavonia rotundifolia from eastern Ethiopia and northern and central Somalia by having stellate ...
Mats Thulin, Othman S. S. Al‐Hawshabi
wiley +1 more source
Canscora agni (Gentianaceae), a new species from the fire‐prone Indian savannas
Nordic Journal of Botany, EarlyView.We describe Canscora agni from the Indian savannas as a distinct species which differs from its allied species Canscora alata in having fewer and shorter leaves, pedicel‐wings unequal across the length, bracts with glandular hair on the margins, calyx‐wings being four, wider, up to 2.3 mm, with distinct reticulate venation and having ovary length up to
Ashish N. Nerlekar +1 more
wiley +1 more source
The Physiology and Biochemistry of Meiosis in the Anther
, 1987 Publisher Summary This chapter discusses the physiology and biochemistry of meiosis in the anther. To understand events in both the nucleus and cytoplasm of male meiocytes of higher plants, developmental changes are considered at the point at which meiosis is initiated in the archesporial tissue.
openaire +1 more source
Nordic Journal of Botany, EarlyView.Guapira Aubl. (Nyctaginaceae, Pisonieae) comprises dioecious shrubs and trees widely distributed in the Neotropics and occupying diverse habitats. In the Brazilian Cerrado, the genus occurs in several phytophysiognomies, including Campos Rupestres, a montane rock ecosystem with high levels of endemism but still marked by significant gaps in botanical ...
Danilo Alvarenga Zavatin +4 more
wiley +1 more source
Nordic Journal of Botany, EarlyView.Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii.
Gabriel Emiliano Ferreira +4 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Biodiversity is threatened by human activities, with extinction debt accumulating rapidly. Many of these activities change the connectivity of populations, fragmenting existing population systems or bringing previously isolated populations or species into contact.
Zhiqin Long +7 more
wiley +1 more source