Effect of Photoperiod, Auxins and Gibberellic Acid on Rooting of Stem Cuttings of <i>Bryophyllum tubiflorum</i>

Nanda, K. K.; Bala, Adarsh

doi:10.1111/j.1399-3054.1967.tb08397.x

Cited by 14 publications

(3 citation statements)

References 13 publications

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“…Kelley (1965) demonstrated that cuttings from short-day treated plants of Ilex crenata rooted better than cuttings from plants growing under natural light conditions. Similar effects on rooting of short-day treatments were obtained by Nanda et al (1967) with Bryophyllum tubiflorum and by Steponkus and Hogan (1967) with Abelia grandiflora.…”

Section: Introductionsupporting

confidence: 76%

Seasonal changes in adventitious root formation in hypocotyl cuttings of Pinus sylvestris: Influence of Photoperiod during stock plant growth and of indolebutyric acid treatment of cuttings

Hansen¹,

Ernstsen

1982

Physiologia Plantarum

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Seedlings of Pinus sylvestris were grown for 6 weeks under natural light conditions in a temperature controlled environment room. Cuttings from these plants were rooted in tap water or in indolebutyric acid (IBA) solutions for 60 days at an irradiance of 16 W m‐2. Experiments were performed at 3‐week intervals during two growth seasons. — Seasonal changes in root formation were found in control cuttings as well as in IBA treated cuttings. The number of roots and the percentage of cuttings that rooted were high during early spring and autumn. During the summer period hardly any roots were formed. Stimulation of root formation by IBA occurred manily during spring and autumn when cuttings already possessed the ability to form roots. — The influence of photoperiod during stock plant growth was also investigated. Shorter photoperiod resulted in an increase in the number of roots and rooting percentage. The period during summer where rooting was inhibited under natural light conditions was considerably shortened when stock plants were grown at a photoperiod of only 4 h. The results demonstrate the importance of the growing conditions for stock plants for subsequent root formation. The results are discussed with special reference to the role of irradiance.

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Section: Introductionsupporting

confidence: 76%

Seasonal changes in adventitious root formation in hypocotyl cuttings of Pinus sylvestris: Influence of Photoperiod during stock plant growth and of indolebutyric acid treatment of cuttings

Hansen¹,

Ernstsen

1982

Physiologia Plantarum

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“…Application of NAA at 6000 ppm gave significantly lower percentage of rooting compared to IBA Sen et al (1965) attributed this difference to their respective differences in initiating hydrolysis of nutritional reserves. Nanda et al (1967) suggested that enhanced hydrolytic activity in the presence of exogenously supplied hormones was responsible for the increased rooting of auxin treated cuttings. The secondary reactions induced by auxins and their interactions with other endogenous substances might account for differential responses of different synthetic auxins in root formation.…”

Section: Resultsmentioning

confidence: 99%

Effects of different concentarions of auxins on rooting and root characters of air and ground layers of jojoba (<i>Simmondsia chinensis</i> (Link.) C.K. Schneider

Dessalegn

Reddy

2005

SEJS

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ABSTRACT:The effect of auxins and their different concentrations on rooting and root characters of air and ground layers of jojoba was assessed at Maxima Estate Private Limited Farm, Hyderabad, India in 1998. Auxins IBA, NAA and their mixture (IBA + NAA) at concentrations of 1000, 2000, 4000 and 6000 ppm with lanolin paste were evaluated. One year old shoots from three and half years old shrubs were selected and used for this investigation. The experiment was conducted during the rainy season from June to August in a randomised complete block design with three replications. Both air and ground layers of jojoba rooted only when treated with auxins. The maximum percentage of rooting, cumulative primary root length and the longest primary root was recorded with the application of auxins at 6000 ppm. Among auxins, IBA and among concentrations 6000 ppm showed significantly better overall results. Synergism between IBA and NAA was observed only on a number of primary roots developed per rooted layer. As the concentration of auxins increased the percentage of rooting, number of primary roots, cumulative primary roots length and the length of longest primary root were increasing steadily. IBA at 6000 ppm resulted in 68.1% and 72.7% rooting on air and ground layers, respectively. Ground layering technique showed early root initiation, relatively higher percentage of rooting, and a greater number and longer primary roots compared to air layering. Therefore, ground-layering technique can be adapted as a better vegetative propagation method for jojoba.

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“…The mineral nutrient status of the stock plant affects rooting; a low N supply improves rooting (Haun andCornell 1951, Preston et al 1953). Photoperiod (Bachelard and Stove 1963, Heide 1965, Nanda et al 1967 and irradiance (Fisher andHansen 1977, Poulsen andAndersen 1980) also influence the rooting ability of many plants. Although irradiance has not always been associated with high rooting potential (Okoro and Grace 1976, Hansen et al 1978, Veierskov and Andersen 1982, Veierskov et al 1982a, it has been used to change the carbohydrate content of cuttings.…”

Section: Introductionmentioning

confidence: 99%

Influence of environment, fertilizer and genotype on shoot morphology and subsequent rooting of birch cuttings

Welander

1995

Tree Physiology

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Differences in rooting ability of birch (Betula pubescens J.F. Ehrh.) cuttings were observed as a result of differences in genotype and physiology of the stock plants. The uniformity in response among cuttings from micropropagated plants compared with cuttings from seed plants confirmed the advantage of using micropropagated plants to study environmental effects. Shoot morphology of the seed stock plants was influenced by both photoperiod and thermoperiod. A day/night temperature of 15/25 degrees C reduced stem elongation compared with a day/night temperature of 25/15 degrees C regardless of photoperiod, and a continuous light regime resulted in more shoots per plant in both temperature regimes than a 16-h photoperiod. A reduction in the supply of macronutrients did not influence shoot morphology, but increased rooting substantially and seemed to override the effects of environmental factors. In cuttings of seed plants, the highest rooting percentage and number of roots were obtained in a 16-h photoperiod with a day/night temperature of 15/25 degrees C. In micropropagated stock plants, there was a positive correlation between shoot length and number of leaves per shoot and topographical distribution of light within the plants, but there was no correlation between these parameters and rooting ability of the cuttings. A rooting temperature of 16 degrees C delayed the rate of root production compared with the rate at higher temperatures, but the final rooting percentage was the same over the range from 16 to 28 degrees C. Root branching increased with temperature. At all temperatures, there was a large increase in sucrose content at the base of the cuttings during rooting, whereas the concentration of nontranslocated sugars remained constant. The carbohydrate content at the base of cuttings from micropropagated stock plants was three times higher than at the base of cuttings from seed stock plants, but the higher carbohydrate content was not correlated with a higher rooting potential.

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Effect of Photoperiod, Auxins and Gibberellic Acid on Rooting of Stem Cuttings of Bryophyllum tubiflorum

Cited by 14 publications

References 13 publications

Seasonal changes in adventitious root formation in hypocotyl cuttings of Pinus sylvestris: Influence of Photoperiod during stock plant growth and of indolebutyric acid treatment of cuttings

Seasonal changes in adventitious root formation in hypocotyl cuttings of Pinus sylvestris: Influence of Photoperiod during stock plant growth and of indolebutyric acid treatment of cuttings

Effects of different concentarions of auxins on rooting and root characters of air and ground layers of jojoba (<i>Simmondsia chinensis</i> (Link.) C.K. Schneider

Influence of environment, fertilizer and genotype on shoot morphology and subsequent rooting of birch cuttings

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