Change in desiccation tolerance of maize embryos during development and germination at different water potential PEG-6000 in relation to oxidative process

2013 ◽  
Vol 68 ◽  
pp. 61-70 ◽  
Author(s):  
Hui Huang ◽  
Songquan Song
Keyword(s):  
Water Potential ◽  
Desiccation Tolerance ◽  
Oxidative Process ◽  
Peg 6000 ◽  
Maize Embryos

Sucrose and raffinose contents and acquisition of desiccation tolerance in immature maize embryos

1994 ◽  
Vol 4 (2) ◽  
pp. 123-126 ◽  
Author(s):  
A. Bochicchio ◽  
E. Rizzi ◽  
C. Balconi ◽  
P. Vernieri ◽  
C. Vazzana
Keyword(s):  
Refractive Index ◽  
Embryo Development ◽  
Desiccation Tolerance ◽  
Peak Areas ◽  
Areas Of Interest ◽  
Refractive Index Detector ◽  
Maize Embryos

AbstractWe report preliminary experiments to test the hypothesis that two sugars are involved in the acquisition of desiccation tolerance in immature maize embryos. Sucrose and raffinose were quantified during embryo development, at 16–27 days after pollination (DAP) and during slow dehydration. Embryos were exposed to slow drying either upon excision (18 and 16 DAP) or after an incubation treatment resulting in a decrease in sucrose (18 DAP). The sugars were separated by HPLC with a refractive-index detector; composition was determined by comparing peak areas of interest with those of individual sugar standards. Although further evidence is needed, our results do not appear to support the hypothesis.

Acquisition of desiccation tolerance by isolated maize embryos exposed to different conditions: the questionable role of endogenous abscisic acid

1994 ◽  
Vol 91 (4) ◽  
pp. 615-622 ◽  
Author(s):  
Adriana Bochicchio ◽  
Paolo Vernieri ◽  
Serenella Puliga ◽  
Francesca Balducci ◽  
Cuncetta Vazzana
Keyword(s):  
Abscisic Acid ◽  
Desiccation Tolerance ◽  
Endogenous Abscisic Acid ◽  
Maize Embryos

Proteomics of desiccation tolerance during development and germination of maize embryos

2012 ◽  
Vol 75 (4) ◽  
pp. 1247-1262 ◽  
Author(s):  
Hui Huang ◽  
Ian Max Møller ◽  
Song-Quan Song
Keyword(s):  
Desiccation Tolerance ◽  
Maize Embryos

scholarly journals Desiccation Tolerance of Deciduous Plants During Postharvest Handling

1990 ◽  
Vol 8 (1) ◽  
pp. 22-25
Author(s):  
Paul Murakami ◽  
Tony H.H. Chen ◽  
Leslie H. Fuchigami
Keyword(s):  
Water Potential ◽  
Freezing Tolerance ◽  
Water Loss ◽  
Desiccation Tolerance ◽  
Cold Hardiness ◽  
Growth Stages ◽  
Acer Platanoides ◽  
Norway Maple ◽  
Postharvest Handling ◽  
Whole Plants

Abstract Nurserymen consider Washington hawthorn (Crategus phaenopyrum Med.) sensitive and Norway maple (Acer platanoides L.) tolerant to postharvest practices. The desiccation tolerance, cold hardiness and water potential at various growth stages were monitored on field-grown Washington hawthorn and Norway maple. There were no differences between these two species in the rate of water loss in the root, shoot or whole plants. Hawthorn, however, was more sensitive to desiccation stress than maple throughout all growth stages. The roots lost water at a faster rate than the stems in both species. Hawthorn plants acquired rest and cold hardened later in the fall and attained less dormancy and less freezing tolerance than did maple.

scholarly journals Influence of priming on Eucalyptus spp seeds' tolerance to salt stress

2016 ◽  
Vol 38 (4) ◽  
pp. 329-334 ◽  
Author(s):  
Anderson Cleiton José ◽  
Natália Cristina Nogueira Silva ◽  
José Marcio Rocha Faria ◽  
Wilson Vicente Souza Pereira
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Water Potential ◽  
Salt Solution ◽  
Germination Percentage ◽  
Eucalyptus Urophylla ◽  
Nacl Solution ◽  
Peg 6000 ◽  
Germination Speed ◽  
Osmotic Potentials

Abstract: The objective of this experiment was to evaluate the effect of priming on the germination of Eucalyptus urophylla and of hybrid E. urophylla × E. grandis seeds under salt stress. Two osmotic potentials (-1.0 and -1.5 MPa) were tested, using PEG 6000 for 1 and 3 days. After priming, seeds were germinated under salt stress in a NaCl solution at 0.0 (control), -0.5, -0.75 and -1.0 MPa potentials, at 25 °C. Seed germination and germination speed index decreased as the water potential of the germination medium decreased. However, E. urophylla was more tolerant to salt stress; it showed a higher germination percentage under all tested potentials, when compared to the hybrid. The osmotic conditioning at -1.0 MPa for three days was more effective when E. urophylla x E. grandis was germinated in a salt solution at -1.0 MPa, indicating that this treatment was more effective in inducing tolerance to salt stress.

Acquisition of desiccation tolerance by isolated maize embryos exposed to different conditions: the questionable role of endogenous abscisic acid

1994 ◽  
Vol 91 (4) ◽  
pp. 615-622 ◽  
Author(s):  
Adriana Bochicchio ◽  
Paolo Vernieri ◽  
Serenella Puliga ◽  
Francesca Balducci ◽  
Concetta Vazzana
Keyword(s):  
Abscisic Acid ◽  
Desiccation Tolerance ◽  
Endogenous Abscisic Acid ◽  
Maize Embryos

scholarly journals Extensive Desiccation and Aging Stress Tolerance Characterize Gaillardia pulchella (Asteraceae) Seeds

HortScience ◽  
2016 ◽  
Vol 51 (2) ◽  
pp. 159-163 ◽  
Author(s):  
Yai Ulrich Adegbola ◽  
Héctor E. Pérez
Keyword(s):  
Water Potential ◽  
Stress Tolerance ◽  
Water Relations ◽  
Desiccation Tolerance ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Germplasm Storage ◽  
Related Stress ◽  
Initial Seed ◽  
High Degree

We investigated the response of Gaillardia pulchella seeds to desiccation and aging stress to gain some perspective on the germplasm storage potential and seed vigor of this species. Seed–water relations of mature, freshly harvested G. pulchella seeds were characteristic of desiccation-tolerant species. For example, initial seed water potential (−53 MPa) was well below the lethal water potential limit (−15 MPa) for desiccation-sensitive seeds. Desiccation tolerance was confirmed by high (>70%), rapid (t50 range 4–7 days), and uniform germination following equilibration drying. Likewise, post–saturated salt accelerated aging (SSAA) germination tests indicated a high degree of vigor of fresh seeds. The substantial level of desiccation and aging-related stress tolerance in G. pulchella seeds suggests that these organs potentially display orthodox storage physiology and an ability to endure variable seed bed conditions.

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