scholarly journals A Method to Assess Freezing Tolerance of Axillary Flower Buds in Japanese Pear by Indexing with Sugar Concentration in Xylem Sap during Winter Season

2021 ◽  
Vol 20 (2) ◽  
pp. 207-215
Author(s):  
Akiko Ito ◽  
Daisuke Sakamoto ◽  
Toshihiko Sugiura ◽  
Takaya Moriguchi
Keyword(s):  
Freezing Tolerance ◽  
Xylem Sap ◽  
Winter Season ◽  
Sugar Concentration ◽  
Japanese Pear ◽  
Flower Buds

scholarly journals Application of Livestock Waste Compost as a Source of Nitrogen Supplementation during the Fall-winter Season Causes Dead Flower Buds in Japanese Pear ‘Kosui’

2017 ◽  
Vol 86 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Daisuke Sakamoto ◽  
Kazuhiro Fujikawa ◽  
Takami Sakaue ◽  
Hiromichi Inoue ◽  
Akiko Ito ◽  
...  
Keyword(s):  
Winter Season ◽  
Japanese Pear ◽  
Livestock Waste ◽  
Flower Buds ◽  
Nitrogen Supplementation

scholarly journals Drought Adaptation in Fuchsia magellanica and Its Effect on Freezing Tolerance

2008 ◽  
Vol 133 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Majken Pagter ◽  
Karen K. Petersen ◽  
Fulai Liu ◽  
Christian R. Jensen
Keyword(s):  
Water Potential ◽  
Water Deficit ◽  
Freezing Tolerance ◽  
Woody Plants ◽  
Xylem Sap ◽  
Water Deficiency ◽  
Frost Injury ◽  
Different Types ◽  
Curvilinear Relation ◽  
Reduced Water

Fuchsia (Fuchsia L.) is a popular woody ornamental, but it is very susceptible to frost injury during winter. As drought stress may be used to enhance freezing tolerance in woody plants, the effects of different types of water deficit on growth, selected physiological traits, and freezing tolerance were examined in Fuchsia magellanica Lam. ‘Riccartonii’. Drought responses were investigated after 6 weeks of pretreatment, where individual plants grown in a greenhouse under conditions of unrestricted water supply were compared with plants subjected to cyclic or continuous water deficit. After an additional 4 weeks of treatment at short day (10 h) and low temperature (8 °C day/4 °C night), freezing tolerance was examined. Both continuous and cyclic water deficit plants reduced water loss by reducing aboveground biomass and by efficient stomatal regulation. Continuous water deficit plants tended to adjust osmotically, while cyclic water deficit induced significantly higher xylem sap abscisic acid [(ABA)xylem] and leaf proline concentrations and a lower leaf water potential (ψl) than continuous water deficit, indicating that F. magellanica responds differently to continuous water deficit and to fast drying associated with stress phases of cyclic water deficit. The root water potential (ψr) and (ABA)xylem were negatively linearly correlated, implying that increasing water deficiency stimulated formation of ABA in the roots. An inverse, curvilinear relation between (ABA)xylem and stomatal conductance (g s) indicated that root-originated ABA might control g s during mild water deficits. Neither cold-acclimating conditions alone nor combined with water deficit increased stem freezing tolerance, indicating that F. magellanica lacks cold-acclimation ability under the inductive conditions used in this study.

The influence of Fusarium oxysporum f. sp. medicaginis on total soluble-sugar concentration of infected alfalfa roots

1993 ◽  
Vol 73 (2) ◽  
pp. 647-649 ◽  
Author(s):  
C. Richard ◽  
J.-G. Martin
Keyword(s):  
Fusarium Oxysporum ◽  
Key Words ◽  
Freezing Tolerance ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Frost Tolerance ◽  
Root Tissue ◽  
Sugar Concentration ◽  
Low Concentration ◽  
Total Soluble Sugar

Alfalfa was inoculated with Fusarium oxysporum f. sp. medicaginis, and the total soluble-sugar concentration was determined in diseased taproots of cold-hardened plants. The concentration of soluble sugars decreased with increasing discoloration of root tissue (r = −0.85, P ≤ 0.0001). The low concentration of soluble sugars might be responsible for the previously reported low freezing tolerance of Fusarium-infected alfalfa. Key words: Alfalfa, Fusarium, sugars, frost tolerance

scholarly journals Effect of Hydrogen Peroxide on Breaking Endodormancy in Flower Buds of Japanese Pear (Pyrus pyrifolia Nakai)

2005 ◽  
Vol 74 (3) ◽  
pp. 255-257 ◽  
Author(s):  
Haruyuki Kuroda ◽  
Toshihiko Sugiura ◽  
Hiroyoshi Sugiura
Keyword(s):  
Hydrogen Peroxide ◽  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Flower Buds ◽  
Pyrus Pyrifolia Nakai

Effects of 9-hydroxy-10-oxo-12(Z), 15(Z)-octadecadienoic acid (KODA) on lateral primordial formation in the apical flower buds of Japanese pear [Pyrus pyrifolia (Burm.f.) Nakai]

2012 ◽  
Vol 140 ◽  
pp. 33-38
Author(s):  
Daisuke Sakamoto ◽  
Yuri Nakamura ◽  
Mineyuki Yokoyama ◽  
Ohji Ifuku ◽  
Takaya Moriguchi
Keyword(s):  
Octadecadienoic Acid ◽  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Flower Buds

scholarly journals Comparative Transcriptome Analysis of the Less-Dormant Taiwanese Pear and the Dormant Japanese Pear during Winter Season

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0139595 ◽  
Author(s):  
Yoshihiro Takemura ◽  
Katsuou Kuroki ◽  
Yoji Shida ◽  
Shungo Araki ◽  
Yukari Takeuchi ◽  
...  
Keyword(s):  
Transcriptome Analysis ◽  
Winter Season ◽  
Japanese Pear ◽  
Comparative Transcriptome ◽  
Comparative Transcriptome Analysis

Metabolomics analysis of 'Housui' Japanese pear flower buds during endodormancy reveals metabolic suppression by thermal fluctuation

2018 ◽  
Vol 126 ◽  
pp. 134-141 ◽  
Author(s):  
Humberto Mitio Horikoshi ◽  
Yoshihiko Sekozawa ◽  
Makoto Kobayashi ◽  
Kazuki Saito ◽  
Miyako Kusano ◽  
...  
Keyword(s):  
Thermal Fluctuation ◽  
Japanese Pear ◽  
Flower Buds ◽  
Metabolic Suppression ◽  
Metabolomics Analysis
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