Influence of ethephon and daminozide on growth and essential oil content of peppermint and sage

El-Keltawi, Naiem E.; Croteau, Rodney

doi:10.1016/s0031-9422(00)81273-x

Cited by 29 publications

(11 citation statements)

References 14 publications

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“…In general the growth regulators treatments caused a significant increase in essential oil yield as compared with control treatment in the two seasons. These results were in agreement with those obtained by El- Keltawi and Croteau (1986) who stated that foliar application of B-9 [daminozide} at 1000 ppm increased essential oil yield of Mentha piperita. Also Mousa et al (2001) stated that application of BA at 20 ppm increased fixed and volatile oil yields in Nigella sativa plant 3-Total seasonal yield of essential oil (ml/plant):…”

Section: -Essential Oil Yield (Ml/plant/cut)supporting

confidence: 93%

“…These results were in agreement with those obtained by Mahandass and Sampath (1985) on Pelargonium graveolens, who found that the best results of essential oil yield and quality were obtained with alar [daminozide] at 1000 ppm. El- Keltawi and Croteau (1986) stated that foliar application of B-9 [daminozide] at 100 ppm increased essential oil yield of Mentha piperita. Also, Abd El-Aziz 2002on Majorana hortensis, found that oil percentage and oil yield per plant and per feddan were increased in most cases by using BA at 20 or 40 ppm.…”

Section: -Essential Oil Yield (Ml/plant/cut)mentioning

confidence: 99%

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EFFECT OF FOLIAR SPRAY WITH BA (Benzyladenine) AND B-9 (Daminozide) ON ESSENTIAL OIL PRODUCTION AND CHEMICAL COMPOSITION OF Majorana hortensis, MOENCH PLANT

Hanafy

2009

Journal of Plant Production

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The aim of this research was to study the effect of foliar spray with BA and B-9 on essential oil production and chemical composition of marjoram plant. The plants were sprayed with BA at the rates of 50, 100 and 150 ppm, while B-9 at the rates of 500, 1000 and 2000 ppm in addition to control treatment which sprayed with distilled water. The obtained results can be summarized as follows: BA at the rates of 50, 100 and 150 ppm or B-9 at the rates of 500, 1000 and 2000 ppm increased all recorded parameters as compared to control treatment with significant differences in most cases during the two seasons. In the first season, the highest value of essential oil percentage was produced with B-9 at 1000 ppm, while the highest values of essential oil yield were obtained with BA at 50, 150 ppm and with B-9 at 1000 ppm treatments. In the second season the highest values of essential oil percentage and essential oil yield were produced with BA at 50 and 100 ppm, respectively. The major essential oil components were linalyl acetate and terpinen-4-ol. The highest percentage of linalyl acetate was detected in the oil of the plants sprayed with B-9 at 1000 ppm in the two seasons, while in the first season, the highest percentage of terpinen-4-ol was found in oil of the plants sprayed with B-9 at 500 ppm as well as the highest percentage of terpinen-4-ol in the second season was produced from control treatment followed by B-9 at 500 ppm. In the first season, the highest values of chlorophyll a, b and carotenoids were produced with BA at 50 ppm, B-9 at 2000 and 500 ppm, respectively. While in the second season, the highest values of chlorophyll a, b and carotenoids were obtained from B-9 at 2000 ppm, BA at 150 ppm and BA at 150 ppm, respectively. The highest values of total carbohydrates percentage were resulted in B-9 at 2000 ppm in the two seasons. In the first season, the highest total seasonal yield of essential oil was obtained from B-9 at 1000 ppm, while in the second season, the highest value was produced from BA at 100 ppm. Generally in combined statistical analysis B-9 at 1000 ppm was the most effective treatment in increasing total seasonal yield of essential oil. The lowest values of all recorded parameters were produced from the control plants in the two seasons. Different cuts as general mean had a significant effect on all recorded parameters in the two seasons. The highest values of essential oil percentage, chlorophyll a, b and carotenoids were produced from the third cut in the two seasons. Also, the highest values of total carbohydrates percentage were produced from the second cut and third cut in the first and second seasons, respectively. The highest values of essential oil yield were obtained from the third cut and fourth cut in the first and second seasons, respectively. The interaction between the growth regulators (BA or B-9) and the cuts increased all recorded parameters as compared with the control in any cut during the two seasons with significant differences in most cases. Majorana hortensis plant bel...

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Section: -Essential Oil Yield (Ml/plant/cut)supporting

confidence: 93%

Section: -Essential Oil Yield (Ml/plant/cut)mentioning

confidence: 99%

EFFECT OF FOLIAR SPRAY WITH BA (Benzyladenine) AND B-9 (Daminozide) ON ESSENTIAL OIL PRODUCTION AND CHEMICAL COMPOSITION OF Majorana hortensis, MOENCH PLANT

Hanafy

2009

Journal of Plant Production

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“…Species-differences in environmental responses to stress factors have been demonstrated (El-Keltawi and Croteau, 1986; Mangas et al, 2006) although interspecific studies have been rare. Species ranking according to anatomical modifications was similar to the ranking based on essential oil changes (cf.…”

Section: Resultsmentioning

confidence: 99%

Influence of microwave frequency electromagnetic radiation on terpene emission and content in aromatic plants

Soran

Stan

Niinemets

et al. 2014

Journal of Plant Physiology

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Influence of environmental stress factors on both crop and wild plants of nutritional value is an important research topic. The past research has focused on rising temperatures, drought, soil salinity and toxicity, but the potential effects of increased environmental contamination by humangenerated electromagnetic radiation on plants have little been studied. Here we studied the influence of microwave irradiation at bands corresponding to wireless router (WLAN) and mobile devices (GSM) on leaf anatomy, essential oil content and volatile emissions in Petroselinum crispum, Apium graveolens and Anethum graveolens. Microwave irradiation resulted in thinner cell walls, smaller chloroplasts and mitochondria, and enhanced emissions of volatile compounds, in particular, monoterpenes and green leaf volatiles. These effects were stronger for WLANfrequency microwaves. Essential oil content was enhanced by GSM-frequency microwaves, but the effect of WLAN-frequency microwaves was inhibitory. There was a direct relationship between microwave-induced structural and chemical modifications of the three plant species studied. These data collectively demonstrate that human-generated microwave pollution can potentially constitute a stress to the plants.

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“…Recently, effects of growth regulators like ethephon, chlormequat chloride and cytokinins have been reported on peppermint and changes in essential oil formation due to these chemicals have been attributed to the effect of these chemicals on enzymes of the biosynthetic pathway [7,8,9] . The present study was undertaken to examine the effect of growth retardants on essential oil biosynthesis in Japanese mint and to clarify the relationship between oil content and other plant characters .…”

Section: Introductionmentioning

confidence: 99%

Effect of growth retardants on growth and essential oil content in Japanese mint

Farooqi

Sharma

1988

Plant Growth Regul

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In field experiments with Japanese mint using different growth retardants, chlormequat chloride (2-chloroethyltrimethylammonium chloride) increased the oil content significantly and inhibited growth to some extent only, whilst ethephon (2-chloroethyl phosphonic acid) at 0.06% concentration significantly decreased growth but had no significant effect on oil content . Among the two oil components studied, menthone content only was significantly increased by 0 .06% ethephon whereas the other growth retardants were ineffective . Correlation studies indicated a strong negative relationship of leaf/stem ratio with plant height and herb yield while a strong positive relationship was obtained between the latter two characters . The oil content of the plant was negatively correlated with herb yield and plant height but it was related positively with leaf/stem ratio .

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Influence of ethephon and daminozide on growth and essential oil content of peppermint and sage

Cited by 29 publications

References 14 publications

EFFECT OF FOLIAR SPRAY WITH BA (Benzyladenine) AND B-9 (Daminozide) ON ESSENTIAL OIL PRODUCTION AND CHEMICAL COMPOSITION OF Majorana hortensis, MOENCH PLANT

EFFECT OF FOLIAR SPRAY WITH BA (Benzyladenine) AND B-9 (Daminozide) ON ESSENTIAL OIL PRODUCTION AND CHEMICAL COMPOSITION OF Majorana hortensis, MOENCH PLANT

Influence of microwave frequency electromagnetic radiation on terpene emission and content in aromatic plants

Effect of growth retardants on growth and essential oil content in Japanese mint

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