Results 221 to 230 of about 12,608 (247)

On the evolutionary and ecological value of breaking physical dormancy by endozoochory

Perspectives in Plant Ecology, Evolution and Systematics, 2016
Abstract Seed dispersal by animal vectors (endozoochory) is ubiquitous, significantly shaping plant communities. Plants that produce seeds with physical dormancy (PY), including many agriculturally and economically important species, constrain the timing of seed germination via impermeable seed coats.
Ganesh K. Jaganathan, Kirsty Yule, Baolin Liu   +2 more
openaire   +1 more source

Physical dormancy in seeds of six genera of Australian Rhamnaceae

Seed Science Research, 2005
Physical dormancy (PY) was identified in six genera representative of Australian Rhamnaceae and subsequently was broken, based on identification of key seed dormancy characteristics: (1) isolation and classification of embryo features; (2) imbibition experiments to determine the rate and amount of water uptake in seeds; and (3) determination of optimum
Turner, S. R., Merritt, D. J., Baskin, C. C., Dixon, K. W., Baskin, J. M.   +4 more
openaire   +4 more sources

Identification of physical dormancy and dormancy release patterns in several species (Fabaceae) of the cold desert, north-west China

Seed Science Research, 2014
AbstractA clear understanding of the mechanisms involved in releasing seed dormancy is important for effective plant conservation and regeneration of desert species. The dormancy types and dormancy release mechanisms of 19 Fabaceae species from four cold deserts in Xinjiang province, China, were studied.
Buhailiqiemu Abudureheman, Huiliang Liu, Daoyuan Zhang, Kaiyun Guan   +3 more
openaire   +1 more source

Sensitivity cycling and its ecological role in seeds with physical dormancy

Seed Science Research, 2009
AbstractCycling of physically dormant (PY) seeds between states insensitive and sensitive to dormancy-breaking factors in the environment has recently been demonstrated inFabaceaeandConvolvulaceae, and it may be a common phenomenon in seeds with water-impermeable seed coats.
K.M.G. Gehan Jayasuriya, Jerry M. Baskin, Carol C. Baskin   +2 more
openaire   +1 more source

Physical dormancy in seeds of Dodonaea viscosa (Sapindaceae) from India

Seed Science Research, 2005
In contrast to reports in the literature that seeds of Dodonaea viscosa from China and Pakistan are non-dormant, or nearly so, we found that a high percentage of seeds of this species collected in north-western India have a water-impermeable seed coat at maturity, i.e. physical dormancy.
S.S. Phartyal, J.M. Baskin, C.C. Baskin, R.C. Thapliyal   +3 more
openaire   +1 more source

Physical and physiological dormancy in black henbane (Hyoscyamus niger L.) seeds

Journal of Plant Biology, 2004
Aim of this study was to investigate the nature of dormancy in black henbane (Hyoscyamus niger) seeds which have low germination rate under normal laboratory conditions. To do this, before placing the seeds in Petri dishes, they were soaked in 5,10 and 15 mg/L GA; 1,2 and 3% H2SO4, 15 mg/L GA + 1% H2SO4, 0.01 M KNO3 solutions, tap water, 40, 50 and 60 ...
Cirak, C, Kevseroglu, K, Saglam, B
openaire   +2 more sources

Physical dormancy in seeds of Dodonaea viscosa (Sapindales, Sapindaceae) from Hawaii

Seed Science Research, 2004
Dormancy in seeds ofDodonaea viscosais due to a water-impermeable seed coat (physical dormancy, PY). Thus, mechanically scarified seeds imbibed water (c.95% increase in mass) and germinated to high percentages over a wide range of temperature regimes in both white light and darkness, whereas non-scarified seeds did not take up water. Dry heat at 80–160°
Jerry M. Baskin, Barbara H. Davis, Carol C. Baskin, Sean M. Gleason, Susan Cordell   +4 more
openaire   +1 more source

A temperate rhamnaceous species with a non-enclosing stone and without physical dormancy

Seed Science Research, 2012
AbstractThe purpose of the present study was to investigate the dormancy break and germination requirements of seeds from the rhamnaceous vineBerchemia scandens. The fleshy fruit contains a two-locular stone with an endocarp described as ‘bony, thickish’. Scarified and non-scarified stones increased by about 30–50% in mass during imbibition over a 24-h
Jeffrey L. Walck, M. Shea Cofer, K.M.G. Gehan Jayasuriya, M. Thilina R. Fernando, Siti N. Hidayati   +4 more
openaire   +1 more source

Are wildfires an adapted ecological cue breaking physical dormancy in the Mediterranean basin?

Seed Science Research, 2015
AbstractMany studies have claimed that fire acts as the chief ecological factor cueing dormancy break in seeds with a water-impermeable seed coat, i.e. physical dormancy (PY), in Mediterranean ecosystems. However, a proposal is made that seasonal temperature changes must be viewed as more meaningful dormancy-breaking cues because: (1) fire is erratic ...
openaire   +1 more source

Physical methods of overcoming dormancy of Enterolobium contortisiliquum (Vell.) Morong seeds.

2022
This study aimed to identify the most effective physical method for overcoming dormancy of Enterolobium contortisiliquum (Vell.) Morong seeds. (monkfish), which have a high level of dormancy and low germination, which can hinder seedling production. A completely randomized design was used consisting of six treatments, each with 40 replications, sown in
Alves de Oliveira, Rayna Régina, Araújo Fortes, Rodrigo, Campos Aguiar, Bruno Aurelio, Carvalho da Silva, Renata, Gama Teixeira, Lorena, Ferreira dos Santos, André, Bezerra de Souza, Priscila   +6 more
openaire   +1 more source