Rhubarb (Rheum rhaponticum L.)

Roggemans, J.; Boxus, P.

doi:10.1007/978-3-642-73520-2_16

Cited by 6 publications

(11 citation statements)

References 6 publications

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“…2.5 μM. Similar results were reported by Lal and Ahuja [14] who reported the propagation of Indian rhubarb ( R.emodi) on MS medium supplemented with BAP and IBA.Roggemans and Claes [15],Roggemans and Boxus [16] also reported the similar observations in R.rhaponticum;Farzamiet al [17]in R.ribes; Thomas et al [18] in R. rhubarbarum, R. rhaponticum, R. undulatum; Malik et al [19] in R. emodi also reported formation of multiple shoots on MS supplemented with BAP and IBA and Vermaet al [20]who reported formation of multiple shoots in R. emodi on MS with BAP and IAA .These reports does not agree with the results of Walkey [21]who reported plantlet formation of R. rhaponticum on LS medium.…”

Section: Resultssupporting

confidence: 86%

Impact of BAP and different auxins on Invitro shoot proliferation of Rheum emodi Wall.

Shugufta¹

2012

IOSR-JPBS

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Section: Resultssupporting

confidence: 86%

Impact of BAP and different auxins on Invitro shoot proliferation of Rheum emodi Wall.

Shugufta¹

2012

IOSR-JPBS

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“…Data for 1990 scaled upward to match annual stream activity. Small dots: 1989: visual data by Koschack & Roggemans (1991); 1990: visual observations by Michael Morrow, Phyllis Eide & David Swann, USA, Peter Brown, Canada; 1991: visual observations from Yasuo Yabu, Japan (Roggemans, Gijssens & Rendtel 1991). Crosses: radar data by Watanabe et al (1992) and forward-scatter data by Shimoda, Suzuki & Maeda (1993).…”

Section: The Perseid Filamentmentioning

confidence: 99%

“…for the years around the return of the comet to perihelion, which happened most recently in 1992 December. Roggemans' (1989) detection of a brief increase of rates during the 1988 return has often been credited as the ®rst sign of this unusual activity, but this result has remained in doubt. Another peak at a somewhat different time was noticed in the global analysis of 1989 Perseid counts by Koschack & Roggemans (1991).…”

mentioning

confidence: 99%

On the unusual activity of the Perseid meteor shower (1989-96) and the dust trail of comet 109P/Swift--Tuttle

Jenniskens

Betlem²,

Lignie³

et al. 1998

Monthly Notices of the Royal Astronomical Society

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We present the first measurements of the radiant and orbit of meteoroids that are part of the unusual Perseid activity called the ‘Perseid Filament’. This filament was encountered by Earth in the years before and after the return of the comet to perihelion in December of 1992. Between 1989 and 1996, there were brief meteor outbursts of near‐constant duration with a symmetric activity profile. In 1993, however, rates increased more gradually to the peak. That gradual increase is identified here as a separate dust component, which we call the ‘Nodal Blanket’. We find that the Nodal Blanket has a very small radiant dispersion. On the other hand, the Perseid Filament has a radiant that is significantly dispersed and systematically displaced by 0.3°. This dispersion implies that unusually high ejection velocities or planetary perturbations must have had time to disperse the stream. In both cases, one would expect a rapid dispersion of matter along the comet orbit. In order to explain the concentration of dust near the comet position, we propose a novel scenario involving long‐term accumulation in combination with protection of the region near the comet against close encounters with Jupiter due to librations of the comet orbit around the 1:11 mean‐motion resonance.

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“…A newly selected breeding line, rhubarb PC49, characterized with non-autumn dormancy, has demonstrated a great potential of commercial production of high quality rhubarb petioles (Zhao et al, 2003a). To promote this new line, micropropagation has been applied following the techniques of Roggemans and Boxus (1988) to produce large number of planting materials for crop establishment. Our previous experimental trail showed that uniform plantlets could be regenerated from micropropagation.…”

Section: Rhubarb (Rheum Rhaponticum) Is a Common Vegetable Crop Cultimentioning

confidence: 99%

Abnormal chromosomes and DNA content in micropropagated rhubarb (Rheum rhaponticum L.) PC49

Zhao

Grout

Roberts

2005

Plant Cell Tiss Organ Cult

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Rhubarb (Rheum rhaponticum L.) is a tetraploid (2n=44) vegetable crop growing in Europe and North America. The results observed 44 chromosomes for both cultivars Timperly Early and PC49, but showing significant differences in DNA contents between them. Abnormal chromosome numbers (2n=22 and 32) and chromosomal fragments were observed only in micropropagated plants of rhubarb PC49, suggesting somaclonal variation. The results provide further information on understanding morphological variation and increased disease susceptibility of micropropagated rhubarb PC49 in our previous investigation.

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Rhubarb (Rheum rhaponticum L.)

Cited by 6 publications

References 6 publications

Impact of BAP and different auxins on Invitro shoot proliferation of Rheum emodi Wall.

Impact of BAP and different auxins on Invitro shoot proliferation of Rheum emodi Wall.

On the unusual activity of the Perseid meteor shower (1989-96) and the dust trail of comet 109P/Swift--Tuttle

Abnormal chromosomes and DNA content in micropropagated rhubarb (Rheum rhaponticum L.) PC49

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