Selection of Some Promising Jojoba ( Simmondsia Chinensis ) Genotypes : Evaluation of Tree Growth and Productivity = إنتخاب بعض سلالات مبشرة من الجوجوبا : تقييم نمو الأشجار و الإنتاجية

Mardi, Mohsen; allatif, A. M. Abd

doi:10.12816/0031405

Cited by 2 publications

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“…Nelson and Watson [19] suggested that jojoba retains this characteristic after observing an alternate-bearing yield pattern in their nitrogen fertilization experiment. Abd El Mohsen and Abd Allatif [26] also reported an alternate fruit-bearing pattern in 26 different jojoba cultivars in Egypt.…”

Section: Introductionmentioning

confidence: 91%

Vegetative and Reproductive Response to Fruit Load in Two Jojoba (Simmondsia chinensis) Cultivars

2021

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Jojoba (Simmondsia chinensis) is a wax crop cultivated mainly in arid and semi-arid regions. This crop has been described as an alternate-bearing plant, meaning that it has a high-yield year (“on-year”) followed by a low-yield year (“off-year”). We investigated the effect of fruit load on jojoba’s vegetative and reproductive development. For two consecutive years, we experimented with two high-yielding cultivars—Benzioni and Hazerim—which had opposite fruit loads, i.e., one was under an on-year load, while the other was under an off-year load simultaneously. We found that removing the developing fruit from the shoot during an off-year promotes further vegetative growth in the same year, whereas in an on-year, this action has no effect. Moreover, after fruit removal in an on-year, there was a delay in vegetative growth renewal in the consecutive year, suggesting that the beginning of the growing period is dependent on the previous year’s yield load. We found that seed development in the 2018 season started a month earlier than in the 2017 season in both cultivars, regardless of fruit load. This early development was associated with higher wax content in the seeds. Hence, the wax accumulation rate, as a percentage of dry weight, was affected by year and not by fruit load. However, on-year seeds stopped growing earlier than off-year seeds, resulting in smaller seeds and an overall lower amount of wax per seed.

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Section: Introductionmentioning

confidence: 91%

Vegetative and Reproductive Response to Fruit Load in Two Jojoba (Simmondsia chinensis) Cultivars

2021

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“…Therefore, the evaluation of genetic variability may be key to improving jojoba yield and properties in the near future [16]. Several studies have beenreported on cultivated Egyptian jojoba shrubs [17][18][19][20][21], however, few have investigated the chemical properties of JO and its chemical composition.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effect of Elite Jojoba Lines on the Chemical Properties of their Seed Oil

et al. 2022

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Jojoba oil (JO) extracted from seeds has outstanding properties, including anti-inflammatory, antioxidant, and antibacterial activities, and can be stored forlong periodsof time. The unique properties of jojoba oil depend on its chemical composition; therefore, the effect of the jojoba genotype on the chemical properties and active components of the seed oil was evaluated in this study. Oil samples were collected from 15 elite Egyptian jojoba lines. The chemical composition, such as moisture, crude fiber, crude oil, ash, and crude protein of elite lines’ seeds was determined to investigate the variation among them based on the jojoba genotype. In addition, the iodine value was obtained to measure the degree of jojoba oil unsaturation, whereas the peroxide number was determined as an indicator of the damage level in jojoba oil. Fatty acid composition was studied to compare elite jojoba lines. Fatty acid profiles varied significantly depending on the jojoba genotype. Gadoleic acid exhibited the highest percentage value (67.85–75.50%) in the extracted jojoba oil, followed by erucic acid (12.60–14.81%) and oleic acid (7.86–10.99%). The iodine value, peroxide number, and fatty acid composition of the tested elite jojoba lines were compared withthose reported by the International Jojoba Export Council (IJEC). The results showed that the chemical properties of jojoba oils varied significantly, depending on the jojoba genotype.

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Selection of Some Promising Jojoba ( Simmondsia Chinensis ) Genotypes : Evaluation of Tree Growth and Productivity = إنتخاب بعض سلالات مبشرة من الجوجوبا : تقييم نمو الأشجار و الإنتاجية

Cited by 2 publications

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Vegetative and Reproductive Response to Fruit Load in Two Jojoba (Simmondsia chinensis) Cultivars

Vegetative and Reproductive Response to Fruit Load in Two Jojoba (Simmondsia chinensis) Cultivars

Evaluation of the Effect of Elite Jojoba Lines on the Chemical Properties of their Seed Oil

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