scholarly journals Gibberellin and Growth in Stone Fruits: Induction of Parthenocarpy in Plum

1968 ◽  
Vol 21 (6) ◽  
pp. 1103 ◽  
Author(s):  
D I Jackson
Keyword(s):  
Gibberellic Acid ◽  
Fruit Development ◽  
Fruit Growth ◽  
Stone Fruits ◽  
Seedless Fruit

Gibberellic acid and a mixture of gibberellin A4 and gibberellin A7 each induced seedless fruit development in plum. Parthenocarpic fruits grew more rapidly early in the season but their final diameters were only 60% of control. Hormones applied only to developing vegetative shoots and not to neighbouring flowers did not induce parthenocarpy. The role of hormones in fruit growth is discussed.

scholarly journals Gibberellic Acid-induced Seedlessness in Field-grown Vines of `Swenson Red' Grape

HortScience ◽  
1991 ◽  
Vol 26 (7) ◽  
pp. 873-875 ◽  
Author(s):  
Cynthia Fellman ◽  
Emily Hoover ◽  
Peter D. Ascher ◽  
James Luby
Keyword(s):  
Gibberellic Acid ◽  
Fruit Development ◽  
Field Studies ◽  
Seedless Fruit ◽  
Before And After ◽  
Red Grape ◽  
Number Of Seeds

We evaluated the extent to which `Swenson Red' seeded grape (Vitis × spp.) responded to single and repeated GA3 applications to induce seedless fruit development. Field studies were conducted to test the time of pre-anthesis GA3 application (18, or 24 May or 3 June), the usefulness of postanthesis application, the optimum GA3 concentration (0, 0.075, 0.15, or 0.3 mm), and the method of application. The treatment dates that gave a high percentage of seedless berries with an acceptable berry count per cluster were 24 May with postanthesis application and 3 June pre-anthesis only. The optimum GA3 concentration was 0.15 mm applied both before and after anthesis. The most seedless berries developed when pre- and postanthesis applications were used, indicating many seedless fruit developed from flowers that would have abscised. There was no difference in percent heedlessness, number of berries per cluster, or number of seeds per berry between clusters dipped or sprayed with 0.3 mm GA3. Chemical uame used: gibberellic acid (GA3).

scholarly journals Role of DNA endoreduplication, lipotubuloids, and gibberellic acid in epidermal cell growth during fruit development of Ornithogalum umbellatum

2007 ◽  
Vol 58 (8) ◽  
pp. 2023-2031 ◽  
Author(s):  
M. Kwiatkowska ◽  
K. Poplonska ◽  
A. Kazmierczak ◽  
D. Stepinski ◽  
K. Rogala ◽  
...  
Keyword(s):  
Cell Growth ◽  
Gibberellic Acid ◽  
Epidermal Cell ◽  
Fruit Development

The Role of Hormones in Fruit Development

1950 ◽  
Vol 84 (815) ◽  
pp. 151-159 ◽  
Author(s):  
Felix G. Gustafson
Keyword(s):  
Fruit Development

The role of gibberellic acid in the hydrolysis of endosperm reserves in Zea mays

Planta ◽  
1974 ◽  
Vol 121 (1) ◽  
pp. 67-74 ◽  
Author(s):  
B. M. R. Harvey ◽  
Ann Oaks
Keyword(s):  
Zea Mays ◽  
Gibberellic Acid ◽  
Hydrolysis Of

scholarly journals NONLINEAR AGROMETEOROLOGICAL MODELS FOR ESTIMATING LYCHEE FRUIT GROWTH

2017 ◽  
Vol 39 (2) ◽  
Author(s):  
LUCAS EDUARDO DE OLIVEIRA APARECIDO ◽  
RAFAEL BIBIANO FERREIRA ◽  
GLAUCO DE SOUZA ROLIM ◽  
BIANCA SARZI DE SOUZA ◽  
PAULO SERGIO DE SOUZA
Keyword(s):  
Fruit Development ◽  
Dry Matter ◽  
Potential Evapotranspiration ◽  
Climatic Conditions ◽  
Fruit Growth ◽  
Multivariate Models ◽  
Degree Days ◽  
Fresh Matter ◽  
Meteorological Elements ◽  
Fruit Diameter

ABSTRACT The influence of climate on the development of lychee fruit is complex, but few studies have discussed the problem. We developed agrometeorological models for simulating the development of fruit fresh matter (FM), fruit dry matter (DM), fruit length (LE), fruit diameter (DI), fruit volume (VO), and fruit number per cluster (FN) of the “Bengal” lychee cultivar as functions of climatic conditions. We conducted three analyses: (a) the influence of mean meteorological elements on the rates of fruit growth, (b) estimation of fruit development by the agrometeorological models using sigmoidal adjustments, and (c) simulation of fruit development using multiple nonlinear regression of two meteorological elements to improve the accuracy. A rate of water deficit (WD) near 5 mm d-1 maximised FM, DM, LE, DI, and VO. Increases in potential evapotranspiration (PET), degree days (DD), and actual evapotranspiration (AET) were correlated with increases in VO and decreases in LE and NF. Models estimating fruit development indicated that the accumulation of WD, PET, AET, and DD had sigmoidal relationships with all variables of fruit growth except FN. FN decreased as WD, PET, AET, and DD increased. The adjusted multivariate models were accurate, with the largest error of 6.45 cm3 (VO). The best models were: FM = f(SWD, DD), LE = f(SAET, DD), DI = f(SWD, DD), VO = f(SWD, DD), and FN = f(SAET, WD).

scholarly journals Model-Assisted Analysis of Spatial and Temporal Variations in Fruit Temperature and Transpiration Highlighting the Role of Fruit Development

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e92532 ◽  
Author(s):  
Thibault Nordey ◽  
Mathieu Léchaudel ◽  
Marc Saudreau ◽  
Jacques Joas ◽  
Michel Génard
Keyword(s):  
Fruit Development ◽  
Temporal Variations ◽  
Spatial And Temporal Variations ◽  
Assisted Analysis

A basic peroxidase isoenzyme from the grape pedicel is induced by gibberellic acid

1999 ◽  
Vol 26 (4) ◽  
pp. 387 ◽  
Author(s):  
Francisco J. Pérez ◽  
Verónica Morales
Keyword(s):  
Ascorbic Acid ◽  
Gibberellic Acid ◽  
Peroxidase Activity ◽  
Hormone Treatment ◽  
Table Grape ◽  
Guaiacol Peroxidase ◽  
Peroxidase Isoenzymes ◽  
Peroxidase Isoenzyme ◽  
Soluble Peroxidase

Soluble peroxidase activity from pedicels of seedless table grape cv. Sultana was highly stimulated by post-bloom applications of gibberellic acid (GA3) to vines. The increase in peroxidase activity was mainly due to the induction of a basic peroxidase isoenzyme (pI > 9; BPrx-HpI). The activity of two other peroxidase isoenzymes of pI 6.5 and 3.2 was not altered by the hormone treatment. BPrx-HpI was induced by GA3 in pedicels and rachis but not in berries, although in berries peroxidase activity was also stimulated by post-bloom GA3 applications. BPrx-HpI oxidised guaiacol and ortho-phenylenediamine (o-PDA), while the others peroxidases found in the pedicel and in the berry oxidised only o-PDA. Hence, BPrx-HpI was characterised as a guaiacol-peroxidase showing no activity towards ascorbic acid (ASC). The possible role of BPrx-HpI in pedicel lignification and berry-drop caused by GA3 applications to cv. Sultana vines is discussed.

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