Improving productivity of four fruit species by growth regulators applied once in ultra-low doses to the collar

Grochowska, Maria; Hodun, M.; Mika, A.

doi:10.1080/14620316.2004.11511757

Cited by 11 publications

(11 citation statements)

References 17 publications

(16 reference statements)

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“…The estimated decreases in seedling height coincide with the results of Keever et al [8], Burch et al [5], Singh [9], George and Nissen [10], Williams et al [11], Bai et al [12] and Grochowska et al [13], since these authors have reported that the PBZ, once absorbed and translocated to the canopy of the plants, causes reduction of the growth in length of new shoots. Likewise, with the results published by Giovinazzo et al [28], as these authors observed that PBZ reduced the size of tomatoes seedlings of the cultivars "Francyset", "Pavia" and "Montego" tomatoes by 45%, of equal form with the of Velázquez et al [29], who found that in tomato plants of the cultivar "Rio Grande" the PBZ retarded growth when foliarly applied at doses of 100, 150 or 200 mg•L −1 in plants of two to four true leaves.…”

Section: Discussionsupporting

confidence: 87%

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Paclobutrazol Applied on Cotyledonal Leaves and Quality of Cucumber, Squash, Melon and Watermelon Seedlings

Flores¹,

Alcaraz²,

Ruvalcaba³

et al. 2018

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The research was done to determine the effects of paclobutrazol (PBZ) through the dose of 150 mg•L −1 , on the quality of seedlings determined by the content of chlorophyll, height, leaf area, dry matter of roots and of the aerial part of cucumber, squash, melon and watermelon. Sowing of all species carried out on October 21, 2013 in polystyrene trays with 200 cavities filled with peat moss. Treatments were the doses of 150 mg of PBZ•L −1 water and the control (distilled water). The solution with PBZ and the distilled water were applied only once with manual atomizer on cotyledonal leaves by mean of 25 shots made approximately with the same force, having put physical barriers between experimental units. In the four species (cucumber, squash, melon and watermelon) the PBZ increased the chlorophyll content in 26.0%, 14.9%, 19.4% and 26.5%, respectively, compared to the control; height decreased in 24.0%, 34.7%, 16.3% and 23.4%; leaf area decreased in 40.1, 0.5, 30.4 and 16.2%; the dry matter of roots increased in 20.0%, 62.5%, 85.7% and 19.7%; whereas in cucumber the dry matter of the aerial part increased 12.3%, in squash decreased 5.3%, and in melon and watermelon increased in the respective 22.9 and 3.3%, so that the 150 mg dose of PBZ can be used to produce seedlings with higher quality for transplant.

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Section: Discussionsupporting

confidence: 87%

“…It has also been reported that between growth regulators is the paclobutrazol (PBZ), an inhibitor of gibberellins that is applied as solution to the soil where the roots of the trees are located, which once absorbed and translocated to the cup, this causes a reduction of the growth in length and diameter of new shoots [8]- [13].…”

Section: Introductionmentioning

confidence: 99%

Paclobutrazol Applied on Cotyledonal Leaves and Quality of Cucumber, Squash, Melon and Watermelon Seedlings

Flores¹,

Alcaraz²,

Ruvalcaba³

et al. 2018

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“…Our results also showed that the flowering rate was significantly increased in the shoot‐bending treatment compared with the control, and the growth rate increased by ~58% (Figure ). Similar results can be seen in other studies (Grochowska et al ., ; Lauri and Lespinasse, ). Thus, the results indicated that shoot‐bending increased the flowering rate by stimulating the bud growth much earlier compared with the control treatment during flower induction in ‘Fuji’ trees.…”

Section: Discussionmentioning

confidence: 99%

Shoot bending promotes flower bud formation by miRNA‐mediated regulation in apple (Malus domestica Borkh.)

Xing

Zhang

Zhao

et al. 2015

Plant Biotechnology Journal

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SummaryFlower induction in apple (Malus domestica Borkh.) trees plays an important life cycle role, but young trees produce fewer and inferior quality flower buds. Therefore, shoot bending has become an important cultural practice, significantly promoting the capacity to develop more flower buds during the growing seasons. Additionally, microRNAs (miRNAs) play essential roles in plant growth, flower induction and stress responses. In this study, we identified miRNAs potentially involved in the regulation of bud growth, and flower induction and development, as well as in the response to shoot bending. Of the 195 miRNAs identified, 137 were novel miRNAs. The miRNA expression profiles revealed that the expression levels of 68 and 27 known miRNAs were down‐regulated and up‐regulated, respectively, in response to shoot bending, and that the 31 differentially expressed novel miRNAs between them formed five major clusters. Additionally, a complex regulatory network associated with auxin, cytokinin, abscisic acid (ABA) and gibberellic acid (GA) plays important roles in cell division, bud growth and flower induction, in which related miRNAs and targets mediated regulation. Among them, miR396, 160, 393, and their targets associated with AUX, miR159, 319, 164, and their targets associated with ABA and GA, and flowering‐related miRNAs and genes, regulate bud growth and flower bud formation in response to shoot bending. Meanwhile, the flowering genes had significantly higher expression levels during shoot bending, suggesting that they are involved in this regulatory process. This study provides a framework for the future analysis of miRNAs associated with multiple hormones and their roles in the regulation of bud growth, and flower induction and formation in response to shoot bending in apple trees.

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“…Thidiazuron (Dropp w ) is a plant-growth regulator with strong cytokinin activity and has been successfully used for the regulation of plant growth and development (Alexieva, Iliev, and Karanov 1997). The growth retardant 2,3,5-triiodobenzoic acid (Tiba w )-a regulator with anti-auxin activity-can be used to regulate shoot and root formation as well as fruit set and quality (Thorpe, Dhaliwal, and Yeung 2004;Grochowska, Hodun, and Mika 2004). Mepiquat chloride (Pix w ), an antigibberilin, is a widely used growth regulator (Albers and Schnakenberg 1994).…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Fertilizer, Foliar Fertilizer, and Growth Regulator Application on Milk Thistle Development, Seed Yield, and Silymarin Content

Geneva

Zehirov

Stancheva

et al. 2007

Communications in Soil Science and Plant Analysis

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An important consideration for milk thistle (Silybum marianum L.) cultivation is regulating development to lengthen the reproductive stage and increase seed yield with high silymarin content. The treatment of milk thistle with foliar fertilizers and growth regulators-thidiazuron (Dropp w ), 2,3,5-triiodobenzoic acid (Tiba w ), mepiquat chloride (Pix w ), and prohexadione-Ca (Regalis w )-resulted in an increase in the proportion of mature flower heads. Highest seed yield was observed in plants treated with Pix w and mineral soil fertilization, whereas in plants treated with foliar fertilizers, highest yields were observed with Pix w and Regalis w . The highest content of silymarin was found in plants treated with Dropp w and foliar fertilizer. Generally, treatment of milk thistle with plant-growth regulators in combination with soil or foliar mineral fertilizers increased the total amount of silymarin by increasing seed yield per hectare.

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Improving productivity of four fruit species by growth regulators applied once in ultra-low doses to the collar

Cited by 11 publications

References 17 publications

Paclobutrazol Applied on Cotyledonal Leaves and Quality of Cucumber, Squash, Melon and Watermelon Seedlings

Paclobutrazol Applied on Cotyledonal Leaves and Quality of Cucumber, Squash, Melon and Watermelon Seedlings

Shoot bending promotes flower bud formation by miRNA‐mediated regulation in apple (Malus domestica Borkh.)

Effect of Soil Fertilizer, Foliar Fertilizer, and Growth Regulator Application on Milk Thistle Development, Seed Yield, and Silymarin Content

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