scholarly journals The effect of quercetine on leaf abscission of apple tree (Malus domestica Borkh.), growth of flax (Linum usitatissimum L.) and pea (Pisum sativum L.), and ethylene production

2011 ◽  
Vol 52 (No. 12) ◽  
pp. 559-563 ◽  
Author(s):  
H. Fišerová ◽  
J. Šebánek ◽  
J. Hradilík ◽  
S. Procházka
Keyword(s):  
Pisum Sativum ◽  
Linum Usitatissimum ◽  
Apple Tree ◽  
Apple Trees ◽  
Polar Transport ◽  
Malus Domestica Borkh ◽  
Inhibiting Effect ◽  
Linum Usitatissimum L ◽  
Pisum Sativum L ◽  
Pea Seedlings

This study compares effects of 2,3,5-triiodobenzoic acid (TIBA) and flavonoid quercetine (Q). In spite of the fact that both these compounds are inhibitors of the polar transport of auxin, a number of experiments demonstrated that their properties are different. If the flax seedlings were decapitated and one cotyledon was removed, the axillary bud of the remaining cotyledon grew up more intensively while TIBA (0.5% applied in the form of a lanolin paste on the remaining cotyledon) induced a correlative reversal so that axillars of removed cotyledons grew up more intensively. However, when Q (0.5%) was applied on the remaining cotyledon in the form of a lanolin paste, this inhibition was not significant. In the lamina-deprived petioles of apple trees TIBA accelerated abscission while Q caused an inhibiting effect similar to that of auxin. TIBA applied on epicotyls of pea seedlings inhibited their growth by 35% while Q only by 15%. As far as the release of ethylene by pea seedlings is concerned, both compounds showed promoting effects similar to the effect of auxin.

scholarly journals The effect of cytokinins and other plant hormones on the growth of cotyledonary axilars of flax (Linum usitatissimum), sunflower (Helianthus annuus) and pea (Pisum sativum)

2011 ◽  
Vol 50 (No. 4) ◽  
pp. 182-187 ◽  
Author(s):  
Š. Klíčová ◽  
J. Šebánek ◽  
T. Vlašic
Keyword(s):  
Pisum Sativum ◽  
Helianthus Annuus ◽  
Plant Hormones ◽  
Linum Usitatissimum ◽  
The Other ◽  
Pea Seedlings ◽  
Significant Stimulation ◽  
The Difference ◽  
Intensive Growth ◽  
Stimulation Of

Flax seedlings were decapitated above the cotyledons. After one cotyledon was removed the growth of the bud of the remaining cotyledon was stronger in 90% of the plants. However, the application of the cytokinin benzyladenine (BA) to the bud of the removed cotyledon caused a growth correlative reversal and, by contrast, in 65% of the plants the bud of the removed cotyledon grew out. On the other hand, in sunflower seedlings, which have epigeal cotyledons similar to flax, after the removal of one cotyledon the growth of the axillary of the removed cotyledon was more intensive in 59% of the plants. Not even an application of BA to the remaining cotyledon of sunflower resulted in more intensive growth of the axillary of this cotyledon. When both cotyledons were left on the seedling, BA applied to one of the cotyledons of decapitated flax plants resulted in a highly significant stimulation of growth of the axillary of this cotyledon; in sunflower; however, the effect of the BA was insignificant. After decapitation of the stem of pea seedlings where both cotyledons remained, both axillaries grew out, but after a certain period of time one of them (the dominant one) achieved a growth correlative dominance over the other (inhibited). The present study is focused on whether an application of plant hormones onto the inhibited shoot is able to cause a growth correlative reversal, i.e. to change the inhibited shoot into a dominant one. The application of 0.12% BA can cause such a reversal virtually in all plants if the original difference in the length between the inhibited and dominating axillaries is 12–24 mm. A 0.12–0.5% concentration of gibberellin causes a reversal in 13–75% of the plants, but only if the difference between the dominant and inhibited shoot is 1–12 mm. A 0.03–0.25% concentration of IAA causes a reversal in 34–57% of the plants, if the difference in the length of the axillaries is 1–4 mm.

Auxin transport in intact pea seedlings (Pisum sativum L.): The inhibition of transport by 2,3,5-triiodobenzoic acid

Planta ◽  
1973 ◽  
Vol 110 (2) ◽  
pp. 173-182 ◽  
Author(s):  
D. A. Morris ◽  
Golben Othman Kadir ◽  
A. J. Barry
Keyword(s):  
Pisum Sativum ◽  
Auxin Transport ◽  
Triiodobenzoic Acid ◽  
Pisum Sativum L ◽  
Pea Seedlings

scholarly journals Physiological and Biochemical Characterization of the GABA Shunt Pathway in Pea (Pisum sativum L.) Seedlings Under Drought Stress

Horticulturae ◽  
2021 ◽  
Vol 7 (6) ◽  
pp. 125
Author(s):  
Nisreen A. AL-Quraan ◽  
Zakaria I. Al-Ajlouni ◽  
Nima F. Qawasma
Keyword(s):  
Drought Stress ◽  
Pisum Sativum ◽  
Water Availability ◽  
Dry Weight ◽  
Gaba Shunt ◽  
Pisum Sativum L ◽  
Pea Seedlings ◽  
Mda Content ◽  
Carbohydrate Levels

The physiological and biochemical role of the γ-aminobutyric acid (GABA) shunt pathway in green pea seedlings (Pisum sativum L.) was studied in response to soil water holding capacity levels: 80%, 60%, 40%, 20%, and 10% grown under continuous light at 25 °C for 7 days and 14 days, separately. Characterization of seeds germination pattern, seedlings growth (plant height, fresh and dry weight, and chlorophyll contents), GABA shunt metabolite (GABA, glutamate, and alanine) levels, total protein and carbohydrate levels, and oxidative damage (MDA level) were examined. Data showed a significant effect of drought stress on seed germination, plant growth, GABA shunt metabolites level, total protein and carbohydrate contents, and MDA level. A significant decline in seed germination percentage was recorded at a 20% drought level, which indicated that 20% of soil water holding capacity is the threshold value of water availability for normal germination after 14 days. Seedling fresh weight, dry weight, and plant height were significantly reduced with a positive correlation as water availability was decreased. There was a significant decrease with a positive correlation in Chl a and Chl b contents in response to 7 days and 14 days of drought. GABA shunt metabolites were significantly increased with a negative correlation as water availability decreased. Pea seedlings showed a significant increase in protein content as drought stress was increased. Total carbohydrate levels increased significantly when the amount of water availability decreased. MDA content increased slightly but significantly after 7 days and sharply after 14 days under all water stress levels. The maximum increase in MDA content was observed at 20% and 10% water levels. Overall, the significant increases in GABA, protein and carbohydrate contents were to cope with the physiological impact of drought stress on Pisum sativum L. seedlings by maintaining cellular osmotic adjustment, protecting plants from oxidative stress, balancing carbon and nitrogen (C:N) metabolism, and maintaining cell metabolic homeostasis and cell turgor. The results presented in this study indicated that severe (less than 40% water content of the holding capacity) and long-term drought stress should be avoided during the germination stage to ensure proper seedling growth and metabolism in Pisum sativum L.

MORPHOLOGICAL CHARACTERISTICS OF STEMS AND ROOTS USED TO DISTINGUISH STANDARD FROM IRRADIATION-INDUCED VARIANT APPLE TREES

1982 ◽  
Vol 62 (2) ◽  
pp. 513-518
Author(s):  
B. J. PARLIMAN ◽  
C. STUSHNOFF
Keyword(s):  
Malus Domestica ◽  
Selection Criteria ◽  
Apple Tree ◽  
Growth Habit ◽  
Morphological Characteristics ◽  
Root Bark ◽  
Apple Trees ◽  
Malus Domestica Borkh ◽  
Gamma Irradiated

Beacon apple tree (Malus domestica Borkh.) variants derived from gamma-irradiated scionwood on Columbia Crab seedling (CC) rootstocks were compared to both standard Beacon/clonal rootstocks, standard Beacon/CC rootstocks and Columbia Crab seedling trees. Stem or root measurements of trees classed as induced spur-type dwarf variants/CC rootstocks had larger bark to xylem ratios than trees from other growth habit classes. Stem and root bark to xylem ratios have the potential to be used as juvenile selection criteria in screening for spur-type dwarf variants in irradiation-exposed apple tree populations.

Release of cotyledonary shoots of pea (Pisum sativum) seedlings from inhibition as related to endogenous zeatin and ethylene and exogenous IAA and benzyladenine

Biologia ◽  
2007 ◽  
Vol 62 (1) ◽  
Author(s):  
Helena Fišerová ◽  
Jiří Šebánek ◽  
Jan Hradilík ◽  
Petr Doležel ◽  
Zuzana Mikušová ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Pisum Sativum ◽  
Apical Dominance ◽  
The Other ◽  
Main Stem ◽  
Inhibiting Effect ◽  
Pea Seedlings ◽  
Exogenous Iaa

AbstractThis paper deals with apical dominance using a dicotylar model obtained after decapitation of pea seedlings with two shoots — one dominant and the other inhibited. When the dominant shoot was decapitated the inhibited one is released from inhibition and after 24 to 72 h begins to grow. However, the levels of trans-zeatin and production of ethylene increase within 4 and 6 hours respectively after release from inhibition, and within an interval of 72 h the levels of both phytohormones begin gradually to decrease. This indicates that also in this model, the release from apical dominance is associated with an increase in the level of cytokinin zeatin and, thereafter, also with an increased production of ethylene. If indolyl-3-acetic acid (IAA) is applied on the decapitated main stem after decapitation of the dominant shoot, the growth of the initially inhibited one is very strongly retarded; if, however, IAA is applied on the decapitated dominant shoot, this inhibition is significantly weaker. This means that the inhibiting effect of IAA on the inhibited shoot originates to a greater degree from the main stem rather than from the dominant shoot. The effect of benzyladenine (BA) is transferred equally from the decapitated main stem and from the decapitated dominant shoot because the initially inhibited shoot begins to grow as well as also other shoots from serial cotyledonary buds.

Transport of 14C-kinetin in intact and decapitated pea seedlings (Pisum sativum L.)

1977 ◽  
Vol 81 (4) ◽  
pp. 308-313 ◽  
Author(s):  
S. Procházka ◽  
H. Schraudolf ◽  
J. Šonka
Keyword(s):  
Pisum Sativum ◽  
Pisum Sativum L ◽  
Pea Seedlings

scholarly journals Effect of hydrogen cyanamide on the endogenous hormonal content of pea seedlings (Pisum sativum L.)

2008 ◽  
Vol 20 (2) ◽  
pp. 159-163 ◽  
Author(s):  
Eric Guevara ◽  
Víctor M. Jiménez ◽  
Jorge Herrera ◽  
Fritz Bangerth
Keyword(s):  
Pisum Sativum ◽  
Hydrogen Cyanamide ◽  
Pisum Sativum L ◽  
Pea Seedlings ◽  
Hormonal Content

Morphoregulative Effects of Phenylacetic Acid in Pea Seedlings (Pisum sativum L.)

1983 ◽  
Vol 178 (6-7) ◽  
pp. 493-501 ◽  
Author(s):  
S. Procházka ◽  
V. Černoch ◽  
J. Blažková ◽  
M. Dundelová
Keyword(s):  
Pisum Sativum ◽  
Phenylacetic Acid ◽  
Pisum Sativum L ◽  
Pea Seedlings
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