Results 31 to 40 of about 30,012 (340)

Early Withering of Enlarged Ovules in Pollinated Fruits of Bananas (Musa spp.) Suggest Abortion after Fertilization

open access: yesHorticulturae, 2022
Sterility in edible bananas is as a result of a long history of anthropogenic-driven selection for sterile genotypes, since seed is not desirable in fruit pulp for human consumption.
Allan Waniale   +5 more
doaj   +1 more source

Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica [PDF]

open access: yes, 2010
The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on details of morphology and anatomy ...
Decombeix, Anne-Laure   +3 more
core   +3 more sources

Standardizing ovule age for in ovulo embryo rescue in seedless grape (Vitis vinifera) breeding under the subtropical region

open access: yesThe Indian Journal of Agricultural Sciences
The present study was carried out during 2018–22 at ICAR-Indian Agricultural Research Institute, New Delhi to identify the appropriate ovule age (days after pollination-DAP) to rescue the in ovulo embryo after pollination in various seedless grape ...
AMOL KAILAS JADHAV   +6 more
doaj   +1 more source

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

Investigations into stability in the fig/ fig-wasp mutualism [PDF]

open access: yes, 2010
Fig trees (Ficus, Moraceae) and their pollinating wasps (Chalcidoidea, Agaonidae) are involved in an obligate mutualism where each partner relies on the other in order to reproduce: the pollinating fig wasps are a fig tree’s only pollen disperser ...
Al-Beidh, Sarah, Al-Beidh, Sarah
core   +1 more source

OVULATION AND MENSTRUATION [PDF]

open access: yesBMJ, 1934
To the Editor:— I should like to be given the opportunity of replying to Dr. Novak's letter inThe Journaldated April 21. I agree with Hartman that the disintegration changes in the endometrium during the anovular cyclic hemorrhage of the macaque and during menstruation in the human female are almost identical.
openaire   +2 more sources

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

Megasporogenesis and Megagametogenesis in Coelogyne speciosa subsp. fimbriata (J.J.Sm.) Gravendeel (Orchidaceae Juss.)

open access: yesInternational Journal of Plant Biology, 2023
Understanding the critical stages in ovule development is essential for optimizing in vitro seed propagation, cryopreservation, and indirect somatic plant embryogenesis.
Galina Kolomeitseva   +3 more
doaj   +1 more source

Flowering Biology of Selected Hybrid Grape Cultivars under Temperate Climate Conditions

open access: yesAgriculture, 2022
Climate change is being felt in all vineyards around the world, opening up new perspectives for regions with a growing winemaking industry. In this study, 11 hybrid grapevines grown in cold climates were assessed in terms of flowering biology and ...
Barbara Anna Kowalczyk   +2 more
doaj   +1 more source

A general stochastic model for sporophytic self-incompatibility [PDF]

open access: yes, 2011
Disentangling the processes leading populations to extinction is a major topic in ecology and conservation biology. The difficulty to find a mate in many species is one of these processes.
Billiard, Sylvain, Tran, Viet Chi
core   +5 more sources

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