Assessment of Alternative Bud Break Enhancers for Commercial Kiwifruit Production of ‘Zesy002’ (Gold3)

2015 ◽  
pp. 289-300 ◽  
Author(s):  
Gustavo Hernández ◽  
Rob Craig ◽  
David Tanner
Keyword(s):  
Bud Break

Cytokinins in Rosa hybrida in relation to bud break

1997 ◽  
Vol 99 (3) ◽  
pp. 456-464 ◽  
Author(s):  
J. A. Dieleman ◽  
F. W. A. Verstappen ◽  
B. Nicander ◽  
D. Kuiper ◽  
E. Tillberg ◽  
...  
Keyword(s):  
Rosa Hybrida ◽  
Bud Break

Mapping QTLs for developmental traits in raspberry from bud break to ripe fruit

2009 ◽  
Vol 118 (6) ◽  
pp. 1143-1155 ◽  
Author(s):  
Julie Graham ◽  
Christine A. Hackett ◽  
Kay Smith ◽  
Mary Woodhead ◽  
Ingo Hein ◽  
...  
Keyword(s):  
Bud Break ◽  
Ripe Fruit ◽  
Developmental Traits

scholarly journals EARLY BUD-BREAK 1 and EARLY BUD-BREAK 3 control resumption of poplar growth after winter dormancy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Abdul Azeez ◽  
Yiru Chen Zhao ◽  
Rajesh Kumar Singh ◽  
Yordan S. Yordanov ◽  
Madhumita Dash ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Molecular Mechanisms ◽  
Negative Regulator ◽  
Bud Break ◽  
Positive Regulator ◽  
Regulatory Module ◽  
Trees And Shrubs ◽  
Poplar Growth ◽  
Identification And Characterization

AbstractBud-break is an economically and environmentally important process in trees and shrubs from boreal and temperate latitudes, but its molecular mechanisms are poorly understood. Here, we show that two previously reported transcription factors, EARLY BUD BREAK 1 (EBB1) and SHORT VEGETATIVE PHASE-Like (SVL) directly interact to control bud-break. EBB1 is a positive regulator of bud-break, whereas SVL is a negative regulator of bud-break. EBB1 directly and negatively regulates SVL expression. We further report the identification and characterization of the EBB3 gene. EBB3 is a temperature-responsive, epigenetically-regulated, positive regulator of bud-break that provides a direct link to activation of the cell cycle during bud-break. EBB3 is an AP2/ERF transcription factor that positively and directly regulates CYCLIND3.1 gene. Our results reveal the architecture of a putative regulatory module that links temperature-mediated control of bud-break with activation of cell cycle.

Different rates of hydrogen cyanamide in bud break of ‘Rocha’ pear tree

2021 ◽  
pp. 313-316
Author(s):  
M.M. Fagherazzi ◽  
L. Rufato ◽  
A.A. Kretzschmar ◽  
A.F. Fagherazzi ◽  
B. Bem ◽  
...  
Keyword(s):  
Bud Break ◽  
Hydrogen Cyanamide ◽  
Pear Tree

scholarly journals In vitro propagation of Rosa ‘Konstancin’ (R. rugosa × R. beggeriana), a plant with high nutritional and pro-health value

2018 ◽  
Vol 30 (2) ◽  
pp. 259-267 ◽  
Author(s):  
Agnieszka Wojtania ◽  
Bożena Matysiak
Keyword(s):  
In Vitro Propagation ◽  
Photosynthetic Activity ◽  
Shoot Culture ◽  
Bud Break ◽  
Multiplication Rate ◽  
Shoot Cultures ◽  
Old Field ◽  
Health Value

Abstract The aim of the study was to develop an efficient micropropagation system for Rosa ‘Konstancin’, an interspecific hybrid between R. rugosa and R. beggeriana, whose fruits have high pro-health value. Shoot cultures were initiated from shoot buds collected in May and August from 15-year-old field-grown Rosa ‘Konstancin’ shrubs. The effect and interaction of different concentrations of phytohormones, sucrose and iron sources on in vitro initiation, multiplication and rooting of shoots were studied. The time of collecting explants from donor plants significantly affected the initiation of shoot culture of Rosa ‘Konstancin’. Considerably higher frequency of bud break (100%) was obtained in explants isolated in August as compared to those collected at the end of May (30%). All buds developed into single shoots after 2-4 weeks of growing on the basal Murashige and Skoog medium containing 2.2 µM BAP, 0.3 µM GA3 and 88 mM of sucrose. The highest multiplication rate (4.8 shoots/explant) in a 5-week period was obtained on MS medium containing 50% of nitrogen salts, 3.1 µM BAP, 0.9 µM GA3 and 58 mM sucrose. High rooting frequency (100%) and quality of rooted plantlets was obtained on a medium containing 0.5 µM IBA, 138 µM Fe-EDDHA and 88 mM sucrose. Fe-EDDHA had a beneficial effect on the growth and photosynthetic activity of Rosa ‘Konstancin’ plantlets, which were successfully acclimatized ex vitro, with a more than 90% survival rate.

Renewal of vascular connections between grapevine buds and canes during bud break

2018 ◽  
Vol 233 ◽  
pp. 331-338 ◽  
Author(s):  
Zhaosen Xie ◽  
Charles F. Forney ◽  
Bhaskar Bondada
Keyword(s):  
Bud Break ◽  
Vascular Connections ◽  
Grapevine Buds

scholarly journals Особенности вегетации интродуцированного сорта винограда Кёхо в стрессовых погодных условиях умеренно континентального климата юга России

2019 ◽  
pp. 223-228
Author(s):  
Dmitry Dergachev ◽  
Marina Larkina ◽  
Valerii Petrov ◽  
Mikhail Pankin
Keyword(s):  
Growth Phase ◽  
Atmospheric Precipitation ◽  
Weather Conditions ◽  
The Black Sea ◽  
Bud Break ◽  
Active Growth ◽  
Grapevine Cultivar ◽  
Long Time ◽  
Vegetation Phase ◽  
Abnormal Weather

Исследования интродуцированного японского сорта винограда Кёхо выполнены в нестабильных погодных условиях умеренно континентального климата юга России, в Черноморской зоне виноградарства Краснодарского края в условиях температурного и водного стрессов 2018 года. В период активной вегетации (май - август) сумма активных температур воздуха была на 197 °С больше среднемноголетней нормы, количество атмосферных осадков было меньше нормы в 3,7 раза и составило 47 мм. В аномальных погодных условиях интродуцированный сорт винограда Кёхо показал высокую адаптивность к нестабильным погодным условиям в форме активного роста и прохождения фенологических циклов. При остром дефиците атмосферных осадков и повышенной инсоляции продолжительность вегетации винограда Кёхо от распускания почек до полной физиологической зрелости ягод была равна 119 дней, на 5 дней меньше, чем у контрольного сорта Бригантина и на 3 дня меньше, чем в среднем по большой группе столовых сортов разного эколого-географического происхождения, расположенных рядом на Анапской ампелографической коллекции. Начало фазы распускания почек, роста побегов и соцветий наблюдалось 15 апреля, у контрольного сорта на 4 дня раньше, у сортов ампелографической коллекции на 6 дней позже. Продолжительность этой фазы вегетации у изучаемого сорта составила 54 дня, больше на 11 дней чем у контрольного сорта и на 9 дней чем у столовых сортов ампелоколлекции. Цветение у сорта Кёхо начиналось 7 июня, на 15 дней позже чем у контрольного сорта Бригантина и на 3 дня чем у группы столовых сортов на ампелоколлекции. Продолжительность периода от начала цветения до начала созревания ягод у сорта Кёхо в экологических условиях 2018 года составила 50 дней, что на 4 дня короче, чем у контрольного сорта и на 3 дня короче, чем у сортов на ампелоколлекции. Интенсивность роста ягод была более высокой по сравнению с контролем и группой столовых сортов в ампелоколлекции. Полная физиологическая зрелость ягод у изучаемого сорта наступила 11 августа, практически одновременно с контролем - 12 августа.The study of introduced Japanese grapevine cultivar ‘Kёho’ was carried out in unstable weather conditions of moderately continental climate of the South of Russia, in the Black Sea viticultural zone of the Krasnodar Krai under temperature and water stress of 2018. During the active vegetation season (May - August), the accumulated effective temperatures made 197 ° С above the long-time average annual, the amount of precipitation was 3.7 times less than normal, and amounted to 47 mm. Under the effect of abnormal weather conditions, the introduced grapevine cultivar ‘Kёho’ demonstrated high adaptability to erratic weather conditions during the active growth phase and passage of phenological cycles. Under acute atmospheric precipitation deficit and increased insolation, the duration of ‘Kёho’ grapevine vegetation from bud break to full physiological berry ripeness made 119 days, which is 5 days less as compared to control cultivar ‘Brigantina’ and 3 days less than the average for a large group of table cultivars of various ecological and geographical origin, located in the nearby Anapa ampelographic collection. The start of the bud break, shoot and inflorescence growth phase was observed on April 15; it happened 4 days earlier for the control cultivar, and 6 days later for the cultivars in the ampelographic collection. The duration of this vegetation phase for the studied cultivar was 54 days, which by 11 days exceeded that of the control cultivar and by 9 days that of the table cultivars in the ampelographic collection. The bloom of ‘Kёho’ began on June 7 - 15 days later than that of the control cultivar ‘Brigantina’ and 3 days later as compared to the group of table cultivars in the ampelographic collection. Duration of the early bloom to veraison period of ‘Kёho’ grapes in the ecological conditions of 2018 made 50 days, which was 4 days shorter than that of the control cultivar and 3 days shorter as compared to the cultivars in the ampelographic collection. The berry growth was more intensive as compared to the control and the group of table cultivars in the ampelographic collection. Berries of the studied cultivar reached full physiological ripeness on August 11, almost simultaneously with the control - on August 12.

scholarly journals Cross-talk between active DNA demethylation, resetting of cellular metabolism and shoot apical growth in poplar bud break

2017 ◽  
Author(s):  
Daniel Conde ◽  
Mariano Perales ◽  
Anne-Laure Le Gac ◽  
Christopher Dervinis ◽  
Matias Kirst ◽  
...  
Keyword(s):  
Boreal Forests ◽  
Shoot Growth ◽  
Growth Cycle ◽  
Dna Demethylation ◽  
Bud Break ◽  
Winter Dormancy ◽  
Environmental Signals ◽  
Woody Perennials ◽  
Active Dna Demethylation ◽  
Dna Demethylase

AbstractAnnual dormancy-growth cycle is a developmental and physiological process essential for the survival of temperate and boreal forests. Seasonal control of shoot growth in woody perennials requires specific genetic programs integrated with the environmental signals. The environmental-controlled mechanisms that regulate the shift between winter dormancy to growth promoting genetic program are still unknown. Here, we show that dynamics in genomic DNA methylation (gDNA) levels regulate dormancy-growth cycle in poplar. We proved that the reactivation of cell division in the apical shoot that lead bud break process in spring, is preceded by a progressive reduction of gDNA methylation in apex tissue. We also identified that the induction in apex tissue of a chilling-dependent poplar DEMETER-LIKE 10 (PtaDML10) DNA demethylase precedes shoot growth reactivation. Transgenic poplars showing down-regulation of PtaDML8/10 caused delayed bud break. Genome wide transcriptome and methylome analysis and data mining revealed the gene targets of active DML-dependent DNA demethylation genetically associated to bud break. These data point to a chilling dependent-DEMETER-like DNA demethylase controlling the genetic shift from winter dormancy to a condition that promotes shoot apical vegetative growth in poplar.

scholarly journals Assessment of In-vitro culture through Nodal explants of Dendrocalamus hamiltonii

2021 ◽  
Vol 2 (1) ◽  
pp. 130-133
Author(s):  
Abha Jha ◽  
◽  
Sunila Das ◽  
Keyword(s):  
Experimental Study ◽  
Growth Regulators ◽  
In Vitro Regeneration ◽  
Shoot Multiplication ◽  
Growth Hormones ◽  
Nodal Explants ◽  
Bud Break ◽  
Multiplication Rate ◽  
Dendrocalamus Hamiltonii

The present experimental study was aimed to overcome the traditional methods of propagation that limit the number of propagules by in-vitro regeneration through nodal explants of Dendrocalamus hamiltonii with a comparative study of growth regulators during the shooting and rooting process. Dendrocalamus hamiltonii is distributed from the Himalayas (Nepal) to the northern part of Burma. Collection of explants was done from different selected sites of CPTs. There was the use of HgCl2 and Ca (OCl)2 as sterilizing agents in different concentrations and its effect was visualized during the sprouting stage. Culm explants were cultured in a bottle containing White media (Wm) supplemented with BA and Kinetin for sprouting and IAA, IBA, NAA for rooting. There is also the use of IAA+IBA+NAA in combined form as a supplementary solution 0.1% HgCl2 treatment for 20-minute results into77.80% aseptic buds and 72% bud -break. Among the used growth-hormones, BA with concentration 0.25mg/l and 0.50mg/l respectively were appropriate for shoot-multiplication rate, 4.01±0.3 and 4.3±0.4 were ideal observation incorporation with BA (1.00mg/l) and BA (1.50mg/l) respectively. Maximum sprouting rate14.77±3.37with application of BA (2.00mg/l) and maximum shoot length4.3±0.4 is observed at BA (1.50mg/l). The applications of rooting hormone IAA+IBA+NAA in the concentration of 1.0 mg/l results in 72.5±0.3(rooting) and 11.1±0.3 (av. No. of the root).

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