scholarly journals Effect of Night-break Treatment at Different Times on Inhibition of Flower Bud Initiation in Chrysanthemum

2013 ◽  
Vol 12 (4) ◽  
pp. 427-432 ◽  
Author(s):  
Ryuji Hakuzan ◽  
Keisaku Kooriyama
Keyword(s):  
Flower Bud ◽  
Bud Initiation

Blossom Thinning in Pome and Stone Fruit

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 553b-553
Author(s):  
Esmaeil Fallahi
Keyword(s):  
Fruit Size ◽  
Naphthalene Acetic Acid ◽  
Full Bloom ◽  
Flower Bud ◽  
Hydrogen Cyanamide ◽  
Ammonium Thiosulfate ◽  
The Past ◽  
Apple Cultivars ◽  
Ortho Cresol ◽  
Bud Initiation

Early thinning of apples is important because of its impact on fruit size and next season's flower bud initiation. In the past, apple cultivars were often sprayed with the blossom thinner sodium dinitro-ortho-cresol(Elgetol) during full bloom, followed by a post-bloom application of a fruit thinner such as carbaryl with or without naphthalene acetic acid (NAA). Elgetol was removed from the market in 1989 because of the high cost of re-registration. Full-bloom sprays of sulfcarbamide (Wilthin), pelargonic acid (Thinex), and endothalic acid (Endothal), ammonium thiosulfate (ATS) or petal fall spray of carbaryl (Sevin XLR Plus) were developed as replacements for Elgetol. Hydrogen cyanamide (HC) and other chemicals have been used to eliminate or to reduce chilling requirements of peaches grown under the warm desert conditions. HC applied at “pink bloom” stage was observed to reduce the number of open blooms in `Florda Prince' peach; therefore, it was first used for blossom thinning in this cultivar in Arizona. Later, HC was also found to be an effective blossom thinner for plums in Idaho. HC has recently been found to effectively thin apple and peach blossoms. Armothin has also been an effective blossom thinner for peach in California.

Floral induction in date palm seedlings (Phoenix dactylifera var. Deglet Nour) cultured in vitro

1987 ◽  
Vol 65 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Saïda Ammar ◽  
Abdellatif Benbadis ◽  
Bal Krishna Tripathi
Keyword(s):  
Date Palm ◽  
Root Formation ◽  
Early Stage ◽  
Floral Induction ◽  
Phoenix Dactylifera ◽  
Flower Bud ◽  
Precocious Flowering ◽  
Cultural Conditions ◽  
Bud Initiation

Flower bud initiation in 5-month-old seedlings of date palm (Phoenix dactylifera L. var. Deglet Nour) was studied under controlled conditions. Normally inflorescence formation in mature plants takes 8 to 10 years. In juvenile plants inflorescence formation was induced in a 16-h day at 28 °C, by a combination of 6-benzylaminopurine, indoleacetic acid, and glucose or sucrose. The present investigation has determined favourable cultural conditions for floral induction in date palm in vitro at a very early stage of ontogeny. Both male and female flowers were induced on young plants. Floral induction usually occurred only when root formation was completely inhibited. The apparent antagonism between root formation and floral development suggests a possible competition in the young plant for growth substances, although production of floral inhibitory substances from the root cannot be precluded. These observations on the induction of precocious flowering in date palm seedlings suggest a model of development, corresponding to neoteny, of this tree as an herb.

scholarly journals Effect of night break treatment using Red LED (660 nm) on flower bud initiation and growth characteristics of chrysanthemum cv. 'Baekma', and cv. 'Jinba'

2013 ◽  
Vol 40 (4) ◽  
pp. 297-303
Author(s):  
Young Soon Kwon ◽  
Seong Youl Choi ◽  
Mi Jung Kil ◽  
Bong Sik You ◽  
Jae A Jung ◽  
...  
Keyword(s):  
Growth Characteristics ◽  
Flower Bud ◽  
Red Led ◽  
Bud Initiation

Flower Bud Initiation and Growth Characteristics according to Wavelength Treatments of LED in Spray Chrysanthemums

2014 ◽  
Vol 17 (6) ◽  
pp. 491-495
Author(s):  
Young Soon Kwon ◽  
◽  
Hak Ki Shin ◽  
Bong Sik You ◽  
Jae A Jung ◽  
...  
Keyword(s):  
Growth Characteristics ◽  
Flower Bud ◽  
Bud Initiation

scholarly journals Different Summer and Autumn Water Deficit Affect the Floral Differentiation and Flower Bud Growth in Apricot (Prunus armeniaca L.)

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 914
Author(s):  
Susanna Bartolini ◽  
Ermes Lo Piccolo ◽  
Damiano Remorini
Keyword(s):  
Water Deficit ◽  
Water Availability ◽  
Water Status ◽  
Prunus Armeniaca ◽  
Stem Water Potential ◽  
Flower Buds ◽  
Flower Bud ◽  
Fruit Species ◽  
Floral Differentiation ◽  
Bud Initiation

In deciduous fruit species, floral bud initiation, differentiation and organogenesis take place during the summer–autumn season that precedes anthesis. Among factors able to modify the regularity of these processes, water availability represents a crucial aspect. This investigation aimed to assess the influence of different summer and autumn water deficit and re-watering treatments on floral morphogenesis, xylem vessel differentiation and quality of flower buds. Trials were carried out on two-year-old potted apricot trees (cv. ‘Portici’) which were submitted to different regimes: (i) fully irrigated plants; (ii) stressed plants in June (S1), July (S2) and October (S3) followed to re-watering. Midday stem water potential was used to determine water status, and leaf gas exchanges were measured during trials. Histological analyses on floral differentiation, xylem progression within flower buds and biological observations were carried out. Both summer water stress periods affected the floral differentiation leading to a temporary shutdown. The S1 trees were able to recover the development of meristematic apices while S2 had a strong delay. All drought treatments caused a slower xylem progression, variations in bud size, blooming entity and flower anomalies. Results particularly highlights the importance of water availability also in early autumn.

scholarly journals Meristem Development and its Relation to Endogenous GA3 and IAA Contents During Floral Bud Differentiation in Broccoli

2011 ◽  
Vol 35 (1) ◽  
pp. 1-6
Author(s):  
Xinmei Jiang ◽  
Xihong Yu ◽  
Dan Li
Keyword(s):  
Apical Meristem ◽  
Morphological Changes ◽  
Flower Bud ◽  
Bud Development ◽  
Meristem Development ◽  
Early Maturing ◽  
Initiation Stage ◽  
Academy Of Sciences ◽  
Bud Initiation ◽  
Floral Bud

The effects of three temperature treatments on morphological changes in the apical meristem and contents of GA3 and IAA in leaves during floral bud differentiation in early maturing cultivar of broccoli were studied. Plants went through every stage of flower-bud differentiation at day/night temperatures of 17.3±1/9.3±1°C. At 21.3±1/13.3±1°C, floral bud development ceased after primary axillary scape primordium differentiation and apical meristem entered a reversion stage. The apical meristem remained in the vegetative growth phase in plants growing at 25.3±1/17.3±1°C. Leaf GA3 contents started to increase while IAA contents started to decrease when plants entered the flower bud initiation stage. GA3 content was high and IAA content was low during all stages of axillary scape primordium differentiation.Key words: Meristem development; Broccoli; Apical meristem; GA3; IAADOI: http://dx.doi.org/10.3329/jbas.v35i1.7966 Journal of Bangladesh Academy of Sciences, Vol.35, No.1, 1-6, 2011

scholarly journals Effects of growing temperatures and day length on flower bud initiation and development in sweet pepper.

1990 ◽  
Vol 28 (4) ◽  
pp. 155-164
Author(s):  
Yukihiro FUJIME ◽  
Fu-Chang GUO ◽  
Kazumasa KAKIBUCHI ◽  
Tadahiko HIROSE
Keyword(s):  
Sweet Pepper ◽  
Day Length ◽  
Flower Bud ◽  
Bud Initiation

FLOWER BUD INITIATION AND DEVELOPMENT OF JACARANDA MIMOSIFOLIA (BIGNONIACEAE) IN JAPAN

2013 ◽  
pp. 71-76
Author(s):  
I. Miyajima ◽  
C. Takemura ◽  
N. Kobayashi ◽  
M.S. Soto ◽  
G. Facciuto
Keyword(s):  
Flower Bud ◽  
Bud Initiation ◽  
Jacaranda Mimosifolia

Expression of a FLOWERING LOCUS T homologue is temporally associated with annual flower bud initiation in Eucalyptus globulus subsp. globulus (Myrtaceae)

2011 ◽  
Vol 59 (8) ◽  
pp. 756 ◽  
Author(s):  
Rebecca C. Jones ◽  
Valérie F. G. Hecht ◽  
Brad M. Potts ◽  
René E. Vaillancourt ◽  
James L. Weller
Keyword(s):  
Eucalyptus Globulus ◽  
Expression Patterns ◽  
Flower Initiation ◽  
Flowering Locus T ◽  
Flower Bud ◽  
Reproductive Growth ◽  
Environmental Signals ◽  
Flowering Genes ◽  
Flowering Locus ◽  
Bud Initiation

The transition to flowering in plants is the result of the balance of endogenous processes and environmental signals that act through a complex genetic pathway that has been studied extensively in annual plants such as Arabidopsis. Perennial trees are characterised by a juvenile non-flowering phase lasting several years followed by an adult phase in which there is repeated cycling between vegetative and reproductive growth. The genetic control of flowering time is potentially more complex in perennials than in annuals and is less understood. Here, we examine the control of flowering in Eucalyptus globulus subsp. globulus, an important forestry species in temperate parts of the world. The E. globulus subsp. globulus homologues of two important flowering genes FLOWERING LOCUS T (FT) and LEAFY (LFY) were isolated and quantitative RT-PCR was used to measure their expression over a 2-year period. The expression of the homologue of FT in E. globulus subsp. globulus leaves was associated with the annual transition from vegetative to reproductive growth (i.e. flower bud initiation). Expression of the LFY homologue was associated with early flower bud development. In a comparison of FT and LFY expression patterns in two clones each of an early and late anthesis genotype, no association between the expression of these genes and the timing of anthesis was shown. Taken together, this indicates that FT and LFY could form part of the flower initiation pathway in Eucalyptus but do not regulate the observed differences in anthesis time.

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