Application of paclobutrazol and Promalin (GA<sub>4 + 7</sub>+ BAP) in the training of ‘Bing’ sweet cherry trees

Jacyna, T.; Wood, D. E. S.; Trappitt, S. M.

doi:10.1080/01140671.1989.10428008

Cited by 11 publications

(11 citation statements)

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“…Bing), the exogenous application of 6-BA-benzyladenine (as promalin) increases the number of floral buds in spurs. The proportion of flowering was increased when 6-BA plus paclobutrazol (GAs biosynthesis inhibitor) was applied [60]. In Arabidopsis, cytokinin-mediated flowering under short days required the activation of TWIN SISTER OF FT (TSF) and the SOC1 and FD functions.…”

Section: Aba Cytokinin and Iaa Pathways Are Active During Flowering mentioning

confidence: 99%

Comparative transcriptomic analysis reveals novel roles of transcription factors and hormones during the flowering induction and floral bud differentiation in sweet cherry trees (Prunus avium L. cv. Bing)

et al. 2020

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In sweet cherry trees, flowering is commercially important because the flowers, after fertilization, will generate the fruits. In P. avium, the flowering induction and flower organogensis are the first developmental steps towards flower formation and they occur within specialized organs known as floral buds during the summer, nine months before blooming. During this period the number of floral buds per tree and the bud fruitfulness (number of flowers per bud) are stablished affecting the potential yield of orchards and the plant architecture. The floral bud development is sensitive to any type of stress and the hotter and drier summers will interfere with this process and are calling for new adapted cultivars. A better understanding of the underlying molecular and hormonal mechanisms would be of help, but unlike the model plant Arabidopsis, very little is known about floral induction in sweet cherry. To explore the molecular mechanism of floral bud differentiation, high-throughput RNA sequencing was used to detect differences in the gene expression of P. avium floral buds at five differentiation stages. We found 2,982 differentially expressed genes during floral bud development. We identified genes associated with floral initiation or floral organ identity that appear to be useful biomarkers of floral development and several transcription factor families (ERF, MYB, bHLH, MADS-box and NAC gene family) with novel potential roles during floral transition in this species. We analyzed in deep the MADS-box gene family and we shed light about their key role during floral bud and organs development in P. avium. Furthermore, the hormonal-related signatures in the gene regulatory networks and the dynamic changes of absicic acid, zeatin and indolacetic acid contents in buds suggest an important role for these hormones during floral bud differentiation in sweet cherry. These data provide a rich source of novel informacion for functional and evolutionary studies about floral bud development in sweet cherry and new tools for biotechnology and breeding.

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Section: Aba Cytokinin and Iaa Pathways Are Active During Flowering mentioning

confidence: 99%

Comparative transcriptomic analysis reveals novel roles of transcription factors and hormones during the flowering induction and floral bud differentiation in sweet cherry trees (Prunus avium L. cv. Bing)

et al. 2020

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“…Miller (1983) and Veinbrants and Miller (1981) reported that painting PR onto the entire surface of 1-year-old shoots of young sweet cherry trees produced some stimulation of branch development from lateral buds. Jacyna and Puchała (2004) and Jacyna et al (1989) reported improvement in branch development and in shoot distribution when BA combined with GA 3 or GA 4+7 was painted on the lower two-thirds of 'Regina' sweet cherry branches or the central 30 cm of 'Bing' 1-year-old branches. Jacyna and Brown (1989a,b) briefly described the use of PR for one system of training young sweet cherry canopies.…”

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Improving the Efficacy of Cytokinin Applications for Stimulation of Lateral Branch Development in Young Sweet Cherry Trees in the Orchard

Elfving¹,

Visser²

2007

horts

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Improving lateral branch development in young sweet cherry trees without reliance on pruning is a desirable component of tree training programs, especially for high-density systems. Applications of two proprietary formulations of 6-benzyladenine and gibberellins A4 and A7 (Promalin, Valent Biosciences, Walnut Creek, Calif.; and Perlan, Fine Americas, Walnut Creek, Calif.) to individual buds or intact bark of unpruned sweet cherry central leader shoots at green-tip had little effect on lateral shoot growth from buds or on distribution of new shoot growth along the treated leader shoots. Scoring, nicking, or notching cuts alone also had inconsistent effects on shoot development and distribution. In some trials, bud removal (or disbudding, removing every fourth bud on 1-year-old shoots) produced limited improvement of lateral shoot development and vertical distribution. Combining nicking, notching, scoring, or bark scraping with the application of cytokinin–gibberellic acid solution to the cut area greatly improved both number of shoots developed and the numbers originating from the lower portions of treated leader shoots. Removing the physical barrier to bioregulator product contact with active tissues was a primary factor in improving treatment efficacy.

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“…Bennewitz et al (2010) found that in treated Lapins trees, the total number of lateral shoots (in most cases) significantly increased, while in Stella trees, the total feather length and the total number of lateral shoots were not affected by Promalin treatments. Jacyna et al (1989) suggested that Promalin increased both shoot and spur numbers in sweet cherries. Likewise, Promalin is similar to Perlan in terms of chemical content.…”

Section: Resultsmentioning

confidence: 99%

The effect of Perlan and bud management on growth, lateral shoots, and the precocity of cherry nursery trees

Topak¹,

Soysal²,

Demirsoy³

2018

Turk J Agric For

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2. Materials and methods 2.1. Materials This study was carried out in Bafra in North Anatolia from 2015 to 2017. The altitude of the experimental area is 16 m. The area is located at the coordinates of 41°33′50″N, 35°52′17″E. The region has a mild climate. The hottest months are July and August and the coldest months are January and February (https://www.mgm.gov.tr/). The soil was a silty clay loam (33.73% clay, 55.35% silt, and 10.92% sand) with an oxidizable organic matter content of 2.71% (moderate). The pH was 8.03 (moderately alkaline reaction), the EC in soil was 0.55 dS

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Application of paclobutrazol and Promalin (GA_{4 + 7}+ BAP) in the training of ‘Bing’ sweet cherry trees

Cited by 11 publications

References 4 publications

Comparative transcriptomic analysis reveals novel roles of transcription factors and hormones during the flowering induction and floral bud differentiation in sweet cherry trees (Prunus avium L. cv. Bing)

Comparative transcriptomic analysis reveals novel roles of transcription factors and hormones during the flowering induction and floral bud differentiation in sweet cherry trees (Prunus avium L. cv. Bing)

Improving the Efficacy of Cytokinin Applications for Stimulation of Lateral Branch Development in Young Sweet Cherry Trees in the Orchard

The effect of Perlan and bud management on growth, lateral shoots, and the precocity of cherry nursery trees

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Application of paclobutrazol and Promalin (GA4 + 7+ BAP) in the training of ‘Bing’ sweet cherry trees

Cited by 11 publications

References 4 publications

Comparative transcriptomic analysis reveals novel roles of transcription factors and hormones during the flowering induction and floral bud differentiation in sweet cherry trees (Prunus avium L. cv. Bing)

Comparative transcriptomic analysis reveals novel roles of transcription factors and hormones during the flowering induction and floral bud differentiation in sweet cherry trees (Prunus avium L. cv. Bing)

Improving the Efficacy of Cytokinin Applications for Stimulation of Lateral Branch Development in Young Sweet Cherry Trees in the Orchard

The effect of Perlan and bud management on growth, lateral shoots, and the precocity of cherry nursery trees

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Application of paclobutrazol and Promalin (GA_{4 + 7}+ BAP) in the training of ‘Bing’ sweet cherry trees