scholarly journals Phenology and morphological flower of Prunus cerasoides Buch.-Ham. ex D. Don

2021 ◽  
Vol 948 (1) ◽  
pp. 012047
Author(s):  
V Kurniawan ◽  
D M Putri ◽  
S Normasiwi ◽  
M I Surya
Keyword(s):  
Botanical Garden ◽  
Ornamental Plant ◽  
Flowering Period ◽  
Prunus Cerasoides ◽  
Flowering Periods ◽  
Second Period

Abstract Prunus cerasoides Buch.-Ham. ex D. Don, known as Himalayan cherry, is an ornamental plant that collected in Cibodas Botanical Garden. Moreover, the environment might be affecting the flowering period and morphological of P. cerasoides. This study was conducted in Cibodas Botanical Garden. It was aimed to evaluate the trend of the flowering period of P. cerasoides in Cibodas Botanical Garden during 20 years (2001-2020). The observation occurred five times, i.e. in 2001, 2004, 2010, 2015, and 2020. The results showed that P. cerasoides was able to flower two times in a year, but the period were not always the same every year. Generally, the flowering times of P. cerasoides in the first period was in January-February on 2001, 2004, 2010, and 2015, but in the second period, P. cerasoides experienced different flowering periods which is August 2001, June-August 2004, August-October 2010, and July-October 2015 with very rare/little (1%-30%) to rare/moderate (31%-60%) of flowers. In 2020, there was a significant shifting of the flowering period that P. cerasoides was flowering from March to June and the second period of flowering in October. The fruit only occurred in 2010 and 2015 with very rare/little fruit intensity (1%-30%) to rare/moderate (31%-60%).

scholarly journals Features of vegetation, flowering and fruiting of the genus Spiraea L. species in the cultivation in the European North-East (Republic of Komi)

2018 ◽  
Vol 7 (2) ◽  
pp. 115-120
Author(s):  
Anna Nikolaevna Smirnova ◽  
Klavdiya Stepanovna Zaynullina
Keyword(s):  
Geographical Origin ◽  
Total Duration ◽  
Botanical Garden ◽  
Northern Region ◽  
Climatic Conditions ◽  
Middle Taiga ◽  
Flowering Period ◽  
North East ◽  
European North ◽  
Ornamental Horticulture

The paper deals with the flowering and fruiting of introduced species of Spiraea L. genus in the collection of the Botanical garden of the Institute of biology of Komi SC of Ural branch of RAS, located in the middle taiga subzone of the European North-East of Russia. The collection of Spiraea genus by this time includes more than 40 taxa of plants of different geographical origin, including one species of local flora. Characteristics of vegetation, flowering and fruiting indicators of nine species of perennial plants of the genus are given based on the results of phenological observations during five years. It is shown that the seasonal rhythm of plant development in the new conditions corresponds to the climatic conditions of the subzone of the middle taiga. There are differences in the dates of beginning and duration of flowering in different species Spiraea of three sections, the total duration of flowering of studied species is almost 100 days. The species of Spiraria section are characterized by latest start and a long flowering period. Plants of all studied species are characterized by annual flowering and fruiting with the formation of benign seeds; some species are capable of self-seeding. The revealed characteristics allow us to consider that the studied species of Spiraea genus have successfully adapted in the Northern region and can be used in ornamental horticulture.

scholarly journals Application of the Maryblyt Model for the Infection of Fire Blight on Apple Trees at Chungju, Jecheon, and Eumsung during 2015-2020

2021 ◽  
Vol 37 (6) ◽  
pp. 543-554
Author(s):  
Mun-Il Ahn ◽  
Sung Chul Yun
Keyword(s):  
Fire Blight ◽  
Geographic Location ◽  
The United States ◽  
Eastern Region ◽  
Flowering Period ◽  
Risk Of Infection ◽  
Apple Trees ◽  
The Common ◽  
Flowering Periods ◽  
The Difference

To preventively control fire blight in apple trees and determine policies regarding field monitoring, the Maryblyt ver. 7.1 model (MARYBLYT) was evaluated in the cities of Chungju, Jecheon, and Eumseong in Korea from 2015 to 2020. The number of blossom infection alerts was the highest in 2020 and the lowest in 2017 and 2018. And the common feature of MARYBLYT blossom infection risks during the flowering period was that the time of BIR-High or BIR-Infection alerts was the same regardless of location. The flowering periods of the trees required to operate the model varied according to the year and geographic location. The model predicts the risk of “Infection” during the flowering periods, and recommends the appropriate times to control blossom infection. In 2020, when flower blight was severe, the difference between the expected date of blossom blight symptoms presented by MARYBLYT and the date of actual symptom detection was only 1-3 days, implying that MARYBLYT is highly accurate. As the model was originally developed based on data obtained from the eastern region of the United States, which has a climate similar to that of Korea, this model can be used in Korea. To improve field utilization, however, the entire flowering period of multiple apple varieties needs to be considered when the model is applied. MARYBLYT is believed to be a useful tool for determining when to control and monitor apple cultivation areas that suffer from serious fire blight problems.

scholarly journals Climate shapes flowering periods across plant communities

2021 ◽  
Author(s):  
Ruby E. Stephens ◽  
Hervé Sauquet ◽  
Greg R. Guerin ◽  
Mingkai Jiang ◽  
Daniel Falster ◽  
...  
Keyword(s):  
Plant Communities ◽  
Flowering Phenology ◽  
Floral Resources ◽  
Flowering Period ◽  
Climate Conditions ◽  
Continental Scale ◽  
Temperature And Precipitation ◽  
Flowering Periods ◽  
Time Of Year ◽  
And Function

AbstractAimClimate shapes the composition and function of plant communities globally, but it remains unclear how this influence extends to floral traits. Flowering phenology, or the time period in which a species flowers, has well-studied relationships with climatic signals at the species level but has rarely been explored at a cross-community and continental scale. Here, we characterise the distribution of flowering periods (months of flowering) across continental plant communities encompassing six biomes, and determine the influence of climate on community flowering period lengths.LocationAustraliaTaxonFlowering plantsMethodsWe combined plant composition and abundance data from 629 standardised floristic surveys (AusPlots) with data on flowering period from the AusTraits database and additional primary literature for 2,983 species. We assessed abundance-weighted community mean flowering periods across biomes and tested their relationship with climatic annual means and the predictability of climate conditions using regression models.ResultsCombined, temperature and precipitation (annual mean and predictability) explain 29% of variation in continental community flowering period. Plant communities with higher mean temperatures and lower mean precipitation have longer mean flowering periods. Moreover, plant communities in climates with predictable temperatures and, to a lesser extent, predictable precipitation have shorter mean flowering periods. Flowering period varies by biome, being longest in deserts and shortest in alpine and montane communities. For instance, desert communities experience low and unpredictable precipitation and high, unpredictable temperatures and have longer mean flowering periods, with desert species typically flowering at any time of year in response to rain.Main conclusionsOur findings demonstrate the role of current climate conditions in shaping flowering periods across biomes, with implications under climate change. Shifts in flowering periods across climatic gradients reflect changes in plant strategies, affecting patterns of plant growth and reproduction as well as the availability of floral resources across the landscape.

Effects of Gibberellic Acid on Dormant Seeds and Subsequent Crops of Pigeonpeas (Cajanus cajan)

1969 ◽  
Vol 44 (1) ◽  
pp. 21-27
Author(s):  
Raúl Abrams
Keyword(s):  
Gibberellic Acid ◽  
Plant Height ◽  
Cajanus Cajan ◽  
Flowering Period ◽  
Genetic Origin ◽  
Flowering Periods ◽  
Green Peas ◽  
Acid Treatments

Seed of the commercial pigeonpea varieties Kaki, Saragateado, and Florido were soaked overnight in solutions of gibberellic acid containing 0, 20, 30, 40, and 50 p.p.m., in order to determine the effect of the acid on plant height, flowering period, and yield of this crop. The following results were obtained: 1. There were no significant differences in plant height between the three commercial varieties that could be attributed to the gibberellic acid treatments. 2. Varieties differed in their flowering periods, but this could not be attributed to the gibberellic acid treatments, as such differences are of genetic origin. 3. Gibberellic acid had no effect on the yield of green peas.

Long-term flowering patterns of melliferous Eucalyptus (Myrtaceae) species

2006 ◽  
Vol 54 (8) ◽  
pp. 745 ◽  
Author(s):  
Melanie J. Birtchnell ◽  
Maria Gibson
Keyword(s):  
Ecological Research ◽  
Flowering Period ◽  
Short Term ◽  
Face To Face ◽  
Field Guides ◽  
Spatial Differences ◽  
Flowering Frequency ◽  
Flowering Periods ◽  
Term Data

The flowering patterns of 28 Victorian melliferous (honey-producing) eucalypts were investigated by using long-term observations of highly experienced, commercial apiarists. Frequency, timing, duration and intensity of flowering were determined, as were spatial differences within and among species. Data were obtained by face-to-face interviews with 25 Victorian apiarists, each of whom had operated a minimum of 350 hives for a minimum of 30 years. Flowering frequency ranged from 1 to 7 years, and most species flowered once every 2–4 years. Long-term flowering frequency, timing and duration were reported as constant, although short-term perturbations could occur. Most melliferous species flowered during spring and summer for a period of 3 months or more. Only few species had shorter flowering periods. Information provided by apiarists compared well with available published information (e.g. flowering period reported in field guides) and revealed a reliable, largely untapped source of long-term data, the use of which could benefit many ecological research endeavours.

scholarly journals Biological active compounds and antioxidant activity of plants from the collection of Central Siberian Botanical Garden. II. Lamiaceae

2020 ◽  
Vol 24 ◽  
pp. 00033
Author(s):  
Evgeniya A. Karpova ◽  
Tatyana A. Kukushkina ◽  
Tatyana M. Shaldaeva ◽  
Yuliya A. Pshenichkina
Keyword(s):  
Antioxidant Activity ◽  
Health Benefits ◽  
Botanical Garden ◽  
Biologically Active ◽  
Scutellaria Baicalensis ◽  
Flowering Period ◽  
Origanum Vulgare ◽  
Active Compounds ◽  
Total Antioxidant ◽  
Positive Correlations

The contents of the major groups of biologically active compounds (catechins, flavonoids, tannins, saponins, pectin, and carotenoids) and total antioxidants (TA) in the leaves and the flowers of Agastahe rugosa_(Fisch. & C.A. Mey.) Kuntze, Betonica officinalis L., Dracocephalum nutans L., Mentha caucasica Gand., Nepeta grandiflora M. Bieb., Origanum vulgare L., Scutellaria baicalensis Georgi (Lamiaceae), collected during the flowering period of 2019 in “Collections of living plants indoors and outdoors” USU 440534 of Central Siberian Botanical Garden SB RAS, Novosibirsk, were studied. The concentrations of constituent majority were higher in leaves compared to flowers. In the leaves, maximums of catechins (15.60 mg-g-1, B. officinalis), flavonoids (61.5 mg-g-1, S. baicalensis), saponins (178.5 mg-g-1, D. nutans), and protopectin (106.0 mg g-1, B. officinalis) were revealed. In the flowers, maximums of tannins (247.4 mg g-1, O. vulgare) and pectin (16.31 mg g-1, S. baicalensis) were found. Maximum of total antioxidant contents (TAC) (6.21 mgg-1) was detected in the leaves of O. vulgare. Positive correlations between TAC and the content of tannins and flavonoids were revealed. The results confirm health benefits of the studied species and contribute to the knowledge of the distribution of saponins and pectins in the Lamiaceae.

scholarly journals Effects of Night-Interrupted Lighting on Growth and Flowering Duration of Herbaceous Perennials Grown Under Nursery Conditions in the Southern United States

2014 ◽  
Vol 32 (1) ◽  
pp. 13-18
Author(s):  
Gary J. Keever ◽  
J. Raymond Kessler ◽  
James C. Stephenson
Keyword(s):  
Plant Height ◽  
Flowering Period ◽  
Flowering Duration ◽  
Start Date ◽  
Herbaceous Perennials ◽  
Long Day ◽  
Natural Photoperiod ◽  
Flowering Periods ◽  
Inductive Photoperiod ◽  
Start Dates

Staggered starting dates for night-interrupted lighting (NIL) were evaluated for accelerated sequential flowering of herbaceous perennials with different photoperiod requirements outdoors in a southern nursery setting. Plants evaluated were black-eyed Susan (Rudbeckia fulgida ‘Goldsturm’), an obligate long-day (LD) plant; obedient plant (Physostegia virginiana ‘Miss Manners’), a facultative LD plant; and Stokes' aster (Stokesia laevis ‘Peachie's Pick’), a facultative intermediate-day plant. With all species, the dates of first flower and maximum flower number occurred sooner under LDs from incandescent (INC) and fluorescent (FLU) lamps than under natural photoperiod (NP). Mean and maximum flower numbers were greater under NIL than under NP for black-eyed Susan and Stokes' aster but not for obedient plant. Time in flower increased in Stokes' aster, but either decreased or was not affected by NIL for black-eyed Susan and obedient plant. Flowering periods of black-eyed Susan and obedient plant exposed to different NIL timings overlapped extensively while leaving a gap in flowering between plants exposed to NIL and those under NP. This gap in flowering suggests that the intervals between NIL start dates could be longer to lessen the flowering overlap of plants under NIL, and that the interval between the start of the last NIL treatment and the onset of an inductive photoperiod be reduced to maintain sequential peak flowering until the natural flowering period. With Stokes' aster, flowering overlapped for plants in the different NIL timings and under NP, resulting in continuous sequential blooms from first flowering of plants under NIL until the plants' natural flowering period under NP in late May. Flowering periods of Stokes' aster exposed to NIL beginning on different dates overlapped extensively, suggesting that at least one NIL start date could be omitted and the intervals between the start of NIL increased without sacrificing continuous sequential peak flowering. NIL from INC and FLU lamps promoted growth in plant height compared to that of plants under NP, although the increase in plant height was less under FLU lamps.

scholarly journals Seasonal development of Philadelphus cultivars in the Mari El Republic

2021 ◽  
pp. 1-7
Author(s):  
Lyudmila Vitalievna Sukhareva ◽  
Svetlana Valer'evna Mukhametova ◽  
Kseniya Aleksandrovna Veselova
Keyword(s):  
Growing Season ◽  
Botanical Garden ◽  
Seasonal Development ◽  
Flowering Period ◽  
The Third ◽  
Beginning Of Flowering ◽  
Ornamental Shrubs

Species of the genus Philadelphus L. (mock orange) are among the most popular ornamental shrubs. They are valued for low maintenance, abundant flowering, exceptional aroma of flowers and a prolonged flowering period during high summer, by when many shrubs already fade. The results of phenological observations of 2018-2020 are presented in the article. The objects of the research were the plants of 8 cultivars of mock orange selected by N. K. Vekhov in the Botanical Garden-Institute of VSUT (Yoshkar-Ola, Mari El Republic). The vegetation of plants lasts from the beginning of May to the end of September and has a duration of 177-189 days.  The 'Airborne force' (Vozdushny desant) cultivar was characterized by the longest growing season.  The full leafing occurred in the first decade of June, the growth of scions ended in the first half of August. Flowering began in the third decade of June and lasted on average for 13-28 days. The cultivar 'Vosdushny Desant' has the earliest beginning of flowering, 'Arktika' has the latest one. The plants of 'Elbrus' were characterized by the longest flowering, 'Yunnat' – by the shortest one. There was no connection between the duration of flowering and the structure of flowers.

scholarly journals Variation between some apricot varieties in regard to flowering phenology in Boldogkôváralja, Hungary

2012 ◽  
Vol 18 (1) ◽  
Author(s):  
A. Ezzat ◽  
L. Amriskó ◽  
G. G. ◽  
T. Mikita ◽  
J. Nyéki ◽  
...  
Keyword(s):  
High Temperature ◽  
Weather Conditions ◽  
Flowering Phenology ◽  
Flowering Period ◽  
Start Date ◽  
Northern Border ◽  
Flowering Periods ◽  
In The Beginning ◽  
Different Origin

The aim of this study was the estimation of blossoming of 14 apricot cultivars in Boldogkôváralja in 2009, 2010 and 2011 seasons. And this will help growers to select appropriate varieties to their weather conditions. For this target the blooming period of 19 apricot varieties of different origin was observed in three subsequent years. There was no large difference in the beginning of blooming in the different years, and the greatest variation between the start date of flowering was about 1 to 3 days as the place of experiment site near to northern border and also, length of flowering period of apricot trees is also inversely related to date when blooming started. The little differences in flowering dates and flowering periods due to the high temperature through the three seasons of study.

Introduction of a Protected Species Hungarian Lilac (Syringa josikaea Jacg.) in the South Ural

2021 ◽  
pp. 122-126
Author(s):  
Natalya V. Polyakova
Keyword(s):  
Growing Season ◽  
Botanical Garden ◽  
Climatic Conditions ◽  
Flowering Period ◽  
Leaf Fall ◽  
The South ◽  
Protected Species ◽  
Phenological Data ◽  
Phenological Phases

The results of a long-term introduction study of Hungarian lilac, an endemic of the Carpathians and Transylvania, cultivated in the South Ural Botanical Garden-Institute of the UFIC RAS, are presented. The study used phenological data from 2005-2020. The beginning of the growing season for Hungarian lilacs falls on the period from April 14 to 30, flowering is observed annually in late May and early June. The duration of flowering over the last 5 years (2015-2020) averaged 16 days, which is 6 days shorter than the flowering period of this type of lilac in 2005-2009. The likely reason for the shortened flowering period is climate change. Complete lignification of the shoots of Hungarian lilac occurs in the second half of July. In Ufa, Hungarian lilacs have fruiting (seeds begin to ripen from September 18 to 27), as well as the presence of self-seeding. The beginning of leaf fall (the end of the growing season) coincides in timing with the beginning of seed ripening. All phenological phases of Hungarian lilac retain their sequence every year. Winter hardiness is usually I point (plants are absolutely winter hardy). The phenological atypicality index is -0.250 or 4 points according to Zaitsev, which means that the phenology of the species is fully consistent with the climatic conditions of Ufa. Thus, the introduction of Hungarian lilac in the South Ural can be characterized as successful and promising.

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