Axillary Bud Inhibition Induced by Young Leaves or Bract in Euphorbia pulcherrima Willd

Weiss, David; Shillo, R.

doi:10.1093/oxfordjournals.aob.a087676

Cited by 11 publications

(9 citation statements)

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“…The inhibitory influence of a subtending leaf and/or petiole on shoot bud development has been previously observed in white clover (Carlson 19666;Harvey 1979;Newton 1986) as well as in other species (e.g. Mclntyre & Damson 1988;Weiss & Shillo 1988). In Expt 3, the removal of a subtending leaf and petiole significantly increased (P < 001) the activity of shoot buds in Kopu but had no influence on Tahora (Table 3a).…”

Section: R E S U L T S a N D Discussionsupporting

confidence: 61%

Technique for evaluating the potential for growth of shoot and root buds of white clover (Trifolium repens)

Newton¹,

Hay²

1992

J. Agric. Sci.

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S U M M A R YAn assay was developed for assessing the potential for growth of shoot and root buds of white clover. This paper describes the technique and the experimental results on which it was based. The assay involved the incubation of nodes under standard conditions and the monitoring of bud activity at the nodes. Shoot buds were of primary interest but the assay was also used to investigate the activity of root primordia. Correlative influences were reduced by separating individual nodes and by removal of their subtending leaves and petioles. The optimal environmental conditions for incubation were: a constant temperature of 20 °C, a 24 h photoperiod of low irradiance (4 W/m 2 ) and a high relative humidity (^ 90%). The technique proved suitable for the monthly screening of 1000-2000 nodes sampled from field populations of white clover.

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Section: R E S U L T S a N D Discussionsupporting

confidence: 61%

Technique for evaluating the potential for growth of shoot and root buds of white clover (Trifolium repens)

Newton¹,

Hay²

1992

J. Agric. Sci.

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“…The contribution of relatively large immature leaves is negligible compared with the apical bud in the rose (Zieslin and Halevy, 1976). The relatively large immature leaves contribute to axillary bud inhibition in the poinsettia (Weiss and Shillo, 1988).…”

Section: Discussionmentioning

confidence: 95%

“…The major source of lateral shoot inhibition in beans was the second and third rapidly expanding trifoliate leaves (2 to 5 cm long) (White et al, 1975). Still larger immature leaves, in addition to the meristem and small leaves, have been implicated in lateral bud inhibition in the poinsettia (Weiss and Shillo, 1988). The objective of this study was to determine the implications of pinching technique on poinsettia lateral-shoot growth and plant morphology at anthesis.…”

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confidence: 99%

Pinching Technique Influences Lateral Shoot Development in Poinsettia

Berghage

Heins

Karlsson

et al. 1989

J. Amer. Soc. Hort. Sci.

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Lateral shoot growth and plant morphology of poinsettia (Euphorbia pulcherrima Willd.) were influenced by the pinching technique used for apical meristem removal. Plants were pinched in one of four ways: 1) soft (removal of the apical meristem plus stem and leaf tissue associated with leaves ≤2 cm long); 2) medium (removal of the apical meristem plus stem and leaf tissue associated with leaves up to 7 cm long); 3) hard (removal of the apical meristem plus stem and leaf tissue associated with all immature leaves); and 4) leaf removal (LR; soft pinch as defined above plus removal of all immature leaves but not the associated stem tissue). Initial growth of lateral shoots on soft and some medium-pinched plants was less than initial growth of lateral shoots on hard- or LR-pinched plants. Shorter lateral shoots and longer primary stems at anthesis on soft-pinched plants resulted in vertical plant architecture. Hard- and LR-pinched plants had a more horizontal plant architecture. The average height : width ratio of soft-, hard-, and LR-pinched plants at anthesis was 0.77, 0.68, and 0.63, respectively. Of 10 commercial cultivars tested in 1987, 48% of the inflorescences of soft-pinched plants developed below the bract canopy, compared with 27% and 31% for hard- and LR-pinched plants, respectively. These results show that the use of a soft pinch to increase inflorescence number in the bract canopy is not productive if immature leaves are left on the plant when pinching.

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“…It could interpret the positive effects of pinching, fertilization and alar on flowering as follows: apical meristem and young expanding leaves constitute a metabolic sink and auxin source that inhibit the outgrowth of lateral buds (Weiss and Shilo, 1988), on the other hand pinching simply means removing the terminal growing portion of stem due to apical dominance. Removal of shoot apex by pinching the growing tip, removes the source of apical dominance and assimilates are diverted into lateral buds and branching occurs (Cline, 1991).…”

Section: Data Presented Inmentioning

confidence: 99%

Influence of Pinching, Some Fertilization Treatments and Spraying With Alar on Solidago Plants. B. Flowering Characteristics

Sarhan

El-Maadawy

Arafa³

et al. 2017

Scient. J. of Flowers and Ornament. Plants

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This study was carried out at Dept. of Ornamental Hort., Fac. Agric., Cairo Univ. and the applied part was carried out under open field conditions at the Experimental Farm of Hort. Res. Inst., ARC, Giza, Egypt during 2015 and 2016 seasons to investigate the effect of pinching, bio-and chemical fertilization (as a soil drench), foliar spraying with alar and their interactions on flowering parameters of goldenrod (Solidago hybrida, "Tara") with the aim of producing high quality plants appropriate to be used as flowering pot plants. Flowering stem length (cm), flowering start date (days), flowering stem fresh and dry weights (g) and number of flowering branches were greatly affected by single, double and triple treatments applied in this study. Regarding the effect of interaction treatments between pinching, fertilization and alar, non-pinching in addition to bio-fertilization + NPK at 3 g/pot + alar at 1000 ppm resulted in the longest flowering stems. Non-pinching in addition to bio-fertilization + NPK at 1.5 g/pot + alar at 500 ppm shared some other treatments (i.e. pinching in addition to bio-fertilization + NPK at 3 g/pot + alar at 500 ppm) and resulted in the lowest flowering start date values. On the other hand, pinching in addition to bio-fertilization + NPK at either 1.5 or 3 g/pot + alar at 500 ppm produced the heaviest fresh flowering stems and to some extent the highest number of flowering branches. However, nonpinching in addition to alar at 1000 ppm + NPK at 3 g/pot either with or without bio-fertilization resulted in the heaviest flowering stems dry weight. According to the previous findings and from an aesthetic point of view, it is recommended to treat goldenrod transplants grown in 14 cm pots with pinching in addition to bio-fertilization plus NPK at either 1.5 or 3 g/pot + spraying with alar at 500 ppm to produce high quality goldenrod plants appropriate to be used as flowering pot plants.

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Axillary Bud Inhibition Induced by Young Leaves or Bract in Euphorbia pulcherrima Willd

Cited by 11 publications

References 0 publications

Technique for evaluating the potential for growth of shoot and root buds of white clover (Trifolium repens)

Technique for evaluating the potential for growth of shoot and root buds of white clover (Trifolium repens)

Pinching Technique Influences Lateral Shoot Development in Poinsettia

Influence of Pinching, Some Fertilization Treatments and Spraying With Alar on Solidago Plants. B. Flowering Characteristics

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