THE ROLE OF GIBBERELLIC ACID AND GIBBERELLIN-LIKE SUBSTANCES IN THE DORMANCY OF THE CRANBERRY

1972 ◽  
Vol 52 (3) ◽  
pp. 263-271 ◽  
Author(s):  
F. C. EADY ◽  
G. W. EATON
Keyword(s):  
Gibberellic Acid ◽  
Vegetative Growth ◽  
Vaccinium Macrocarpon ◽  
Flower Bud ◽  
Bud Development ◽  
Terminal Buds ◽  
Flower Bud Development

The role of applied gibberellic acid (GA3) and endogenous gibberellins in the dormancy requirement of the cranberry Vaccinium macrocarpon Ait. cult McFarlin was investigated. Application of GA3 to unchilled dormant plants resulted in only vegetative growth of the terminal buds. Extraction and bioassay of gibberellin-like substances from both terminal buds and leaves during the 1969–70 season indicate a translocation of these substances from leaves to terminal buds between March 9 and April 6. This coincided with the time of elongation of the terminal buds in the field. The timing of this translocation suggests that these gibberellin-like substances do not play an important role in flower-bud development at this stage.

Gibberellic acid and flower bud development in loquat (Eriobotrya japonica Lindl.)

2011 ◽  
Vol 129 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Carmina Reig ◽  
Vittorio Farina ◽  
Giorgio Volpe ◽  
Carlos Mesejo ◽  
Amparo Martínez-Fuentes ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Eriobotrya Japonica ◽  
Flower Bud ◽  
Bud Development ◽  
Flower Bud Development

scholarly journals The tuberization signal StSP6A represses flower bud development in potato

2018 ◽  
Vol 70 (3) ◽  
pp. 937-948 ◽  
Author(s):  
Faline D M Plantenga ◽  
Sara Bergonzi ◽  
José A Abelenda ◽  
Christian W B Bachem ◽  
Richard G F Visser ◽  
...  
Keyword(s):  
Flower Bud ◽  
Bud Development ◽  
Flower Bud Development

scholarly journals Storage Temperature and Duration Affect Flower Bud Development, Shoot Emergence, and Flowering of Leucocoryne coquimbensis F. Phil.

1998 ◽  
Vol 123 (4) ◽  
pp. 586-591 ◽  
Author(s):  
Kiyoshi Ohkawa ◽  
Hyeon-Hye Kim ◽  
Emiko Nitta ◽  
Yukinori Fukazawa
Keyword(s):  
No Reduction ◽  
Storage Temperature ◽  
Cut Flower ◽  
Flower Bud ◽  
Bud Development ◽  
Dry Storage ◽  
Flower Stem ◽  
Shoot Emergence ◽  
Flower Bud Development

Leucocoryne, a native to Chile, has violet, blue, or white flowers and is increasing in popularity as a cut flower. The effects of storage temperature and duration on flower bud development, shoot emergence, and anthesis were investigated. Bulbs stored at 20 to 30 °C for 22 weeks produced 3.4 flower stems per bulb between March and April. Bulbs stored at 20 °C flowered earliest, followed by those stored at 25 °C. Bulbs stored at 30 °C flowered last. After 16 weeks of storage at 20 °C, a further 2 weeks dry storage at 15 °C before planting resulted in 1 month earlier flowering with no reduction of the number of flowering stems. As dry storage at 20 °C increased to 11 months, the time to emergence and flowering decreased. After dry storage at 20 °C for 12 months, the primary flower stems aborted and secondary stems then developed. Secondary and tertiary flower stems tend to commence flower bud development after the flower bud on the primary flower stem has reached the gynoecium or anther and ovule stage of initiation.

Pollen development in relation to phenological stages of inflorescence expansion in Amelanchier alnifolia (saskatoon), with a comparison with buds forced out of dormancy

1999 ◽  
Vol 77 (2) ◽  
pp. 262-268
Author(s):  
Michael J Sumner ◽  
William R Remphrey ◽  
Richard Martin
Keyword(s):  
Time Frame ◽  
Early Spring ◽  
Flower Buds ◽  
Flower Bud ◽  
Phenological Stages ◽  
Inflorescence Development ◽  
Amelanchier Alnifolia ◽  
Bud Development ◽  
Internal Development ◽  
Flower Bud Development

A relationship was developed between phenological stages of inflorescence expansion and the internal development of pollen within the anther of Amelanchier alnifolia Nutt. flowers. The major microscopic events associated with microsporogenesis and microgametogenesis were correlated with seven stages of external inflorescence development in both natural buds and those forced from dormancy in different concentrations of gibberellin at various times of the year. In fall and early spring, it was found that gibberellin at a concentration of 2.5 mg/L forced buds to produce inflorescences that most resembled those from natural field populations. However, it was not possible to force flower buds to develop all the way to anthesis. Flower bud development stopped when the pollen was at the binucleate stage. Despite this limitation, the ability to force buds increases the time frame for the study of many aspects of the reproductive biology of A. alnifolia.Key words: microsporogenesis, microgametogenesis, gibberellin, GA, flowering.

Sign in / Sign up

Export Citation Format

Share Document