Results 71 to 80 of about 14,689 (278)

Studies on Typhonium (Araceae – Areae) of Thailand VI: Typhonium boonmaesp. nov. from central Thailand

open access: yesNordic Journal of Botany, EarlyView.
A species new to science, Typhonium boonmae K.Z.Hein, P.Saensouk and Saensouk, is described and illustrated from Saraburi and Lop Buri Provinces, central Thailand. A detailed description, color plates, comparisons with similar taxa, phenology, distribution, ecology, and a preliminary conservation status assessment are provided.
Piyaporn Saensouk   +4 more
wiley   +1 more source

A new old species of Tetracera (Dilleniaceae) from Espinhaço Range, Brazil

open access: yesNordic Journal of Botany, EarlyView.
Tetracera is the only genus within Dilleniaceae with a pantropical distribution. During efforts for a taxonomic revision of the neotropical species, we identified incongruences between application of names and their taxonomic identities, based on protologue and type specimen analysis. Here we describe a new species for the genus bearing a single carpel
Michelly D. F. Araújo   +3 more
wiley   +1 more source

Developmentally regulated genes drive phylogenomic splits in ovule evolution. [PDF]

open access: yesNat Commun
: The evolution of seeds transformed life on earth and is responsible for our most important food crops. Gymnosperms, the oldest living seed plants, are an untapped genomic reservoir for genes involved in seed evolution. To tap this resource, we assemble
Sondervan VM   +14 more
europepmc   +2 more sources

Treasures of the Serra da Jiboia (Bahia, Brazil): a new species of Racinaea and an overview of the local Bromeliaceae flora

open access: yesNordic Journal of Botany, EarlyView.
Serra da Jiboia, located in the south‐central region of Bahia, represents an important ecotone between the Atlantic Forest and the Caatinga and harbors high floristic diversity and numerous endemic species. The Bromeliaceae family, well represented in the region, stands out for its ecological importance and adaptability to various microenvironments ...
Everton Hilo de Souza   +5 more
wiley   +1 more source

ABOUT ARRANGEMENT OF THE HAIRS ON THE EPIDERMIS OF COTTON SEED [PDF]

open access: yesJournal of Central European Agriculture, 2006
The character of an arrangement of the hairs on seeds of fi ve cotton cultivars has been investigated. Unknown feature has been found in the processes of the cells-hairs appearance from the epidermis of ovule-seed.
V Krakhmalev, A Paiziev
doaj  

Ovule Gene Expression Analysis in Sexual and Aposporous Apomictic Hypericum perforatum L. (Hypericaceae) Accessions

open access: yesFrontiers in Plant Science, 2019
Hypericum perforatum L. (2n = 4x = 32) is an attractive model system for the study of aposporous apomixis. The earliest phenotypic features of aposporous apomixis in this species are the mitotic formation of unreduced embryo sacs from a somatic cell of ...
Giulio Galla   +5 more
doaj   +1 more source

The shared benefits of fallen fruits: A novel mechanism stabilizing a nursery pollination mutualism between Sambucus and kateretid beetles

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Understanding how cooperative interactions remain stable matters for biodiversity because many plants rely on specialist insects that can also impose reproductive costs. We studied the interaction between Sambucus sieboldiana and seed‐consuming Heterhelus beetles through detailed field observations and pollination experiments.
Suzu Kawashima   +3 more
wiley   +1 more source

Quality of seeds of Pinus koraiensis Siebold et Zucc. (Pinaceae) in Ukrainian plantations

open access: yesІнтродукція Рослин, 2015
The area of Pinus koraiensis Siebold et Zucc. (Korean pine) decreases, so many trees are protected. In world practice there are example of successful cultivation of edible seeds of pine. Several plantations were created in Ukraine. The size and weight of
О.P. Pokhylchenko
doaj   +1 more source

Assessing the Genotypic Differences for Seed Set and Seed Abortion in Tomato Genotypes [PDF]

open access: yes, 2009
Tomato (_Lycopersicon esculentum_ Mill.) is one of the most popular fruit vegetable around the world. Seed abortion where in only a small proportion of ovules in an ovary develops into matured seeds, is a wide spread phenomenon in multi-ovulated species.
Ganeshaiah Narayana   +2 more
core  

THE INS AND OUTS OF OVULE DEVELOPMENT

open access: yes, 2009
In the past few years, ovule development has been widely studied in different plant species, both from a morphological and a more molecular point of view.
Battaglia, Raffaella
core   +1 more source

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