Results 171 to 180 of about 5,955 (208)
Some of the next articles are maybe not open access.
2020
The Indo-Malaysian rainforest is renowned for its great diversity of tropical flora. It has over 25,000 species of flowering plants and is one of the World’s major centers of origin of many species of fruit trees, timber, spices, and medicinal plants.
openaire +1 more source
The Indo-Malaysian rainforest is renowned for its great diversity of tropical flora. It has over 25,000 species of flowering plants and is one of the World’s major centers of origin of many species of fruit trees, timber, spices, and medicinal plants.
openaire +1 more source
The Basis of Recalcitrant Seed Behaviour
1989The term ‘recalcitrance’, defined as obstinate disobedience, refers to seeds that undergo no maturation drying as the final phase of development, tolerate very little post-shedding desiccation and are often chilling-sensitive. Such seeds are unstorable by any of the methods used for air-dry orthodox seeds.
Patricia Berjak +2 more
openaire +1 more source
The ascorbate system in recalcitrant and orthodox seeds
Physiologia Plantarum, 1999Recalcitrant seeds of Ginkgo biloba L., Quercus cerris L., Aesculus hippocastanum L. and Cycasrevoluta Thunb. are shed by the plant at a high moisture content, contain a large amount of ascorbic acid (ASA) and maintain high ascorbate (ASC) peroxidase (EC 1.11.1.11) activity. Three proteins showing ASC peroxidase activity are present in G. biloba seeds.
TOMMASI, Franca +2 more
openaire +2 more sources
Cryopreservation of Recalcitrant Seeds
1995Long-term ex situ storage of plant germplasm is of increasing importance, both for maintaining the genetic diversity of species with current human use, and for the preservation of species threatened with extinction in the wild. Seed banks have long been used for this purpose, taking advantage of a natural plant preservation mechanism: the dry seed ...
openaire +1 more source
Evolutionary and ecological aspects of recalcitrant seed biology
Seed Science Research, 2000AbstractThere is a substantial literature on the basic physiology and response to desiccation of recalcitrant seeds, but little is known about their ecology and even less of their evolutionary status. It is difficult to assess the response of early land plants to dehydration, but it is likely that desiccation tolerance in vegetative tissue arose ...
N.W. Pammenter, Patricia Berjak
openaire +1 more source
ECOLOGICAL SIGNIFICANCE OF RECALCITRANT SEEDS
Recalcitrant seeds, characterized by their sensitivity to d esiccation and inability to withstandfreezing temperatures, play a critical role in maintaining biodiversity and ecosystemfunctionality. Unlike orthodox seeds, recalcitrant seeds germinate rapidly after dispersal,allowing them to adapt to specific envir onmental conditions, particularly in ...Chamoli, Vinay +4 more
openaire +2 more sources
The Ecology and Physiology of Viviparous and Recalcitrant Seeds
Annual Review of Ecology and Systematics, 2000▪ Abstract Understanding seed physiology is central to reconstructing how angiosperms have evolved, to characterizing dormancy and germination regimes shared by suites of species, and to devising sound strategies for seed bank conservation, agriculture, and forestry.
openaire +1 more source
Recalcitrant seeds of horse chestnut lack protein bodies
Russian Journal of Plant Physiology, 2016In recalcitrant seeds of horse chestnut (Aesculus hippocastanum L.), the bulk of protein in axial organs and cotyledons is accounted for by water-soluble proteins (albumins). In the cells of embryo, proteins are predominantly located in the cytosol, whereas the fraction of cell structures precipitate in the range from 1000 to 20000 g, accounting for ...
M. I. Azarkovich, Yu. P. Bolyakina
openaire +1 more source
Identification and characterization of dehydrins in horse chestnut recalcitrant seeds
Russian Journal of Plant Physiology, 2010The fraction of heat-stable dehydrins cytosolic proteins from mature recalcitrant seeds of horse chestnut (Aesculus hippocastanum L.) was studied in the period of their dormancy and germination in order to identify and characterize stress-induced dehydrin-like polypeptides.
N. A. Gumilevskaya, M. I. Azarkovich
openaire +1 more source
Cryopreservation of tropical recalcitrant-seeded species – perspectives
Acta Horticulturae, 2019Cryopreservation is an alternative strategy for the long-term conservation of tropical recalcitrant-seeded species. Embryonic axes/embryos or shoot tips are possible explants for this purpose as the seeds are sensitive to cold temperature and they are not tolerant to desiccation to a low moisture content required for seed banking.
openaire +1 more source