Changes of leaf water potential and endogenous cytokinins in young apple trees treated with or without paclobutrazol under drought conditions

Zhu, Lu; Peppel, Arjen Van De; Li, Xueyuan; Welander, Margareta

doi:10.1016/s0304-4238(03)00089-x

Cited by 75 publications

(56 citation statements)

References 29 publications

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“…In the present study, PBZ application was effective in reducing shoot length since the PBZ inhibits GA biosynthesis by blocking the step in the oxidation of ent-kaurene to entkaurenoic acid [7] resulting in unelongated shoots, even though cell division still occurs. Similar results have been reported in apple [3]. In addition, PBZ could also induce flowering in mango trees because it reduced vegetative growth.…”

Section: Discussionsupporting

confidence: 88%

“…The next step is to decide whether to use PBZ or not. PBZ has been used with considerable success to induce flowering in several fruit crops such as apple [3], pummelo [4], apricot [5] and mango [6]. PBZ inhibits gibberellin biosynthesis [7], reduces vegetative growth and induces water-stress tolerance as well as increases total non-structural carbohydrates (TNC) [8], [9].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Paclobutrazol Concentrations and Time of Foliar Application on Flowering of ‘Namdokmai-Sitong’ Mango

Wongsrisakulkaew¹,

Boonprakob²,

Sethpakdee³

et al. 2017

Geomate

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Paclobutrazol (PBZ) is a growth regulator used to control vegetative growth, stimulating the reproductive capacity of plants. PBZ has been widely marketed throughout the tropics to stimulate mango flowering. In the recent years, many reports showed that application of PBZ by soil drenching can cause permanent stunting of flushes, the vegetative and root growth of mango was reduced. The aim of this work was to determine the effects of PBZ on flowering of mango by foliar application. The commercial mango cultivar 'Namdokmai-sitong' was used in this study. The experiment was analyzed as a completely randomized design. There were 4 replications with 10 treatments. Foliar application at 15 days after pruning with PBZ at 0, 500, 1,000, 1,500 and 2,000 mg./L and repeated at 30 days with 0 and 1,000 mg./L. There was significant difference on the time to flowering, percentage of flowering shoots and panicle length. The trees receiving the PBZ at 2,000 mg/L were exhibited stunting of flushes and panicle malformation. This study suggests that the multiple foliar application of PBZ was effective in promoting flowering in 'Namdokmaisitong' mango, can help early flowering and higher percentage of flowering shoots.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Effect of Paclobutrazol Concentrations and Time of Foliar Application on Flowering of ‘Namdokmai-Sitong’ Mango

Wongsrisakulkaew¹,

Boonprakob²,

Sethpakdee³

et al. 2017

Geomate

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“…Proline enhances the stability of protein and membrane under high temperature or moisture stress according to Mumtaz et al [120] while Heber and Santarius [121] reported that sugar alcohols improved the stability of membranes and protein to high temperature denaturation however Zhu et al [122] determined that during the grain filling stage, higher accumulation of proline in stressed leaves occurs signifying that under moderate stress the role of proline is related to a protective action.…”

Section: Effect Of Heat Stress On Wheat Biochemistrymentioning

confidence: 99%

Impacts of Heat Stress on Wheat: A Critical Review

Iqbal¹,

Raja²,

Yasmeen³

et al. 2017

Adv Crop Sci Tech

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A brief review is given of investigations on stress-induced alterations in the yield of different biochemical contents in wheat. Wheat is major cereal crop for fulfilling the calories demands of growing population. Alterations in the worldwide climate are predicted to have critical sentence for crop production. Abiotic stresses such as heat and drought are major abiotic stresses restraining crop production. Heat stress reduces wheat growth by upsetting various physiological and biochemical processes and the developmental stage of the plant is critical in demonstrating the vulnerability of various species and cultivars subjected to high temperature. Heat stress did not affect the protein content but there is strong correlation between leaf nitrogen content and grain protein content. Induction of HSPs seems to be the universal response and adaptation to temperature stress. The synthesis of HSPs is believed to play significant role either in preventing or minimizing the adverse effects of high temperature both at molecular and cellular levels. Wheat has the tendency to adopt diverse types of responses to temperature stress as well as a heat shock by developing thermo-tolerance for the enhancement of the grain quality and yield.

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“…Triazoles can protect plant against various stresses and have been characterized as plant multi-protectants (Fletcher et al 2000). PBZ has been reported to protect plants against drought (Marshall et al 2000;Zhu et al 2004). Now Stevia is being cultivated in different part of world because it is a medicinal plant with a huge Impact of paclobutrazol on Stevia rebaudiana under drought stress 415 demand in pharmaceutical, food and beverage industries.…”

Section: Introductionmentioning

confidence: 99%

Influence of exogenously applied paclobutrazol on some physiological traits and growth of Stevia rebaudiana under in vitro drought stress

Hajihashemi

Ehsanpour

2013

Biologia

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This investigation was carried on to find out the changes occurred in Stevia rebaudiana in response to paclobutrazol (PBZ; 0–4 mg L−1) treatment and drought stress. Polyethylene glycol (PEG; 0–6 % w/v) was used to stimulate drought stress. Drought stress reduced fresh and dry weight, water content, chlorophylls, carotenoids, anthocyanins, water soluble carbohydrates, reducing sugar and proline amounts. Electrolyte leakage, MDA, α-tocopherol and glycine betaine contents increased in drought-stressed plants. The activity of P5CS and PDH enzymes and protein content showed no significant changes under drought stress. PBZ (with or without PEG) treatments decreased fresh and dry weight and water content. In PBZ-treated plants, less pigments was damaged by drought stress. PBZ treatment reduced the negative effect of drought stress on lipid peroxidation which resulted in lower electrolyte leakage and MDA content, compared to the same PEG level without PBZ. PBZ (with or without PEG) treatments increased glycine betaine, α-tocopherol, proline and protein contents. The amount of water soluble carbohydrates, reducing sugar and activity of P5CS and PDH were not affected by PBZ treatments. SDS-PAGE analysis revealed that drought stress increased a 25 kD protein with a critical function in plant development under stresses. According to the results, PEG provoked a severe drought stress in S. rebaudiana that could partly be restored by PBZ treatment.

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Changes of leaf water potential and endogenous cytokinins in young apple trees treated with or without paclobutrazol under drought conditions

Cited by 75 publications

References 29 publications

Effect of Paclobutrazol Concentrations and Time of Foliar Application on Flowering of ‘Namdokmai-Sitong’ Mango

Effect of Paclobutrazol Concentrations and Time of Foliar Application on Flowering of ‘Namdokmai-Sitong’ Mango

Impacts of Heat Stress on Wheat: A Critical Review

Influence of exogenously applied paclobutrazol on some physiological traits and growth of Stevia rebaudiana under in vitro drought stress

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