The effect of growth regulators and apex removal on branching and flower bud production of jojoba

Ravetta, D.A.; Palzkill, D. A.

doi:10.1016/0926-6690(92)90045-w

Cited by 9 publications

(8 citation statements)

References 13 publications

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“…Chen (1991) showed that flower bud differentiation of lychee (Litchi chinensis) was significantly promoted by exogenous kinetin application after bud dormancy. The total number of flowers on jojoba (Simmondsia chinensis) was also significantly increased by treatment with BA (Ravetta and Palzkill 1992;Prat and others 2008). Recently, Li and others (2010) reported that the flower-specific elevation of cytokinin through transgenic expression of an Arabidopsis cytokinin biosynthesis enzyme gene (ATP/ADP isopentenyltransferase 4, AtIPT4) under the control of the APETALA1 (AP1) promoter led to a threefold increase of flowers in the transgenic plants.…”

Section: Introductionmentioning

confidence: 83%

Benzyladenine Treatment Significantly Increases the Seed Yield of the Biofuel Plant Jatropha curcas

Pan

2010

J Plant Growth Regul

108

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Jatropha curcas, a monoecious perennial biofuel shrub belonging to the family Euphorbiaceae, has few female flowers, which is one of the most important reasons for its poor seed yield. This study was undertaken to determine the effects of the plant growth regulator 6-benzyladenine (BA) on floral development and floral sex determination of J. curcas. Exogenous application of BA significantly increased the total number of flowers per inflorescence, reaching a 3.6-fold increase (from 215 to 784) at 160 mg/l of BA. Furthermore, BA treatments induced bisexual flowers, which were not found in control inflorescences, and a substantial increase in the femaleto-male flower ratio. Consequently, a 4.5-fold increase in fruit number and a 3.3-fold increase in final seed yield were observed in inflorescences treated with 160 mg/L of BA, which resulted from the greater number of female flowers and the newly induced bisexual flowers in BA-treated inflorescences. This study indicates that the seed yield of J. curcas can be increased by manipulation of floral development and floral sex expression.

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Section: Introductionmentioning

confidence: 83%

Benzyladenine Treatment Significantly Increases the Seed Yield of the Biofuel Plant Jatropha curcas

Pan

2010

J Plant Growth Regul

108

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“…Treated date palm with 20 g yeast/palm or EM1 (1.0 cm 3 /L) gave the best results of bunch weight and fruit quality (Mostafa, 2006). Spraying benzyl-adenine (150 ppm) and gibberelline (150 ppm as regulex) on 2 clones of jojoba induced significant differences vegetative growth among the clones but not between the treatments (Ravetta andPalzkill, 1992 andPrat et al, 2008). Moreover, spraying gibberelline (150 ppm as regulex on same jojoba clones showed a significant increase in flower bud No/shrub (Gonzalez, 1998 andMakwana andRobin, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Gibberellic Acid and Some Natural Compounds Application on Vegetative Growth, Yield and Fruit Characteristics of Jojoba Shrubs

2017

AJAS

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This study was carried out during 2014 and 2015 seasons in a private orchard of Jojoba located at Mout, El-Dakhla, New Valley Governorate to examine the effects of GA 3 (25, 50 and 100 ppm), camphor oil (1.5, 3.0 and 4.5 cm 3 /L), effective microorganisms (EM1, 3, 6 and 9 cm 3 /L), glauconite compound (250 and 500 g/shrub) and a mixture of GA 3 (50 ppm) with the afromentioned concentrations of camphor oil on vegetative growth, yield/shrub and Jojoba seed characteristics. The treatments were conducted at start of Jojoba blooming (the 1 st application time), and the 2 nd application was achieved 3 weeks after fruit set, except the glauconite was applied 3 weeks before Jojoba blooming. The experiment was conducted in randomized complete block design (RCBD) with 3 replicates, 2 shrubs each.According to the obtained results of this study, it could be deduced that all treatments improved the vegetative growth, yield and seed quality.Concerning oil weight/100 seeds and oil % in seeds treatment with mixture of GA 3 (50 ppm) and camphor oil (1.5 or 3.0 cm 3 /L) gave the best results during the two studied seasons. Therefore, for improving yield and seed quality it could be recommended spray jojoba a mixture of GA 3 (50 ppm) plus camphor oil at 1.5 or 3.0 cm 3 /L under the condition of this study.

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“…Almost 50% of the irrigated land is affected by high salinity, often resulting in secondary salinization due to inappropriate use of saline irrigation water. Despite the essentiality of chloride as a micronutrient for all higher plants and of sodium as mineral nutrient for many halophytes and some species, salt accumulation may convert agricultural areas in unfavorable environments, reduce local biodiversity, limit growth and reproduction of plants, and may lead to toxicity in nonsalttolerant plants, known as glycophytes (6,33). The effects of salinity are generally summarized as water stress, salt stress and stress due to ionic imbalance (14).…”

Section: Introduction Jojobamentioning

confidence: 99%

Stimulative Response to Quantity and Quality of Jojoba Oil by Gibberellic Acid and Benzyl Adenine

Khattab¹

2019

Iraqi J. Agric. Sci.

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This study was aimed to evaluate five clones of jojoba plant under the influence of salinity stress which was spraied by gibberellin and benzyl adenine on growth yield and oil. Two field experiments were carried out at Magharah Research and dmting Production which follow Desert Research Center, Agriculture Ministry, in North Sinai governorate, Egypt, 2015/2016 and 2016/2017 respectively, the experimemts wene consist of five clones (S-L, S-610, S- 700, S-B and S-G), (were sprayed by, GA3 200ppm, BA 200ppm and GA3+BA and control) under effect of salinity stress. The experiment was conducted as split plot design having varieties in main plot and IAA, GA3 sub plots three replicates. The jojoba plant was affected by increased GA3, BA or/and GA3+BA, and it was clear in all clones. The effect of GA3, BA or/and GA3+BA varied from one clone to another and the lowest was s-700. All studied variables were confirmed that clones of jojoba had a significant effect with GA3, BA or/and GA3+BA

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The effect of growth regulators and apex removal on branching and flower bud production of jojoba

Cited by 9 publications

References 13 publications

Benzyladenine Treatment Significantly Increases the Seed Yield of the Biofuel Plant Jatropha curcas

Benzyladenine Treatment Significantly Increases the Seed Yield of the Biofuel Plant Jatropha curcas

Effect of Gibberellic Acid and Some Natural Compounds Application on Vegetative Growth, Yield and Fruit Characteristics of Jojoba Shrubs

Stimulative Response to Quantity and Quality of Jojoba Oil by Gibberellic Acid and Benzyl Adenine

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