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1

Effect of low temperature treatment on shoot growth and multiplication in vitro of tulip (Tulipa gesneriana L.)

100%
Podwyszynska M., Rojek A.
Acta Physiologiae Plantarum
|
2007
|
tom 29
|
nr 1 Suppl.
2

Growth of shoot cultures of white mulberry [Morus alba L.] in the presence of salicylic acid

100%
Litwinczuk W.
Acta Physiologiae Plantarum
|
1997
|
tom 19
|
nr 2
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The influence of lead and selenium interactions on shoot growth and antioxidant enzyme activity in Vicia faba L. minor plants

84%
Mroczek-Zdyrska M., Strubinska J., Hanaka A.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2013
|
tom 94
|
nr 3
4

Effect of various levels of sucrose, nitrogen salts and temperature on the growth and development of Syringa vulgaris L. shoots in vitro

84%
Gabryszewska E.
Journal of Fruit and Ornamental Plant Research
|
2011
|
tom 19
|
nr 2
The influence of sucrose (5, 10, 20, 30 g l-1), nitrogen salts - KNO3, NH4NO3 (25%, 50%, 100% in relation to the MS medium) and temperature (15 °C, 20 °C) on the growth of the main shoot and the activation and development of axillary buds in Syringa vulgaris in vitro was investigated. Different ratios of sucrose/nitrogen salts in the MS medium had a limited effect on the length of the main shoot of lilac plantlets. Also, the concentration of sucrose and nitrogen salts in the medium did not signifi­cantly affect the formation of nodes on the main or axillary shoots. The outgrowth of axillary shoots depended on the sucrose and nitrogen salts concentrations and tem­perature. Among the various sucrose/nitrogen salts relations, the highest number of axillary shoots (4.2) was found in the plantlets growing at a temperature of 20 °C, on a medium with a low level of sucrose (5 g l-1) and 100% strength of KNO3 and NH4NO3. Increased levels of sucrose in the medium significantly reduced the devel­opment of axillary buds in lilac plantlets growing at either temperature. By contrast, high levels of sucrose increased the fresh weight of lilac shoots. Different levels of nitrogen salts in the medium containing the same level of sucrose had no significant effect on the fresh weight of lilac shoots. On the other hand, at all levels of sucrose, the increased strength of nitrogen salts in the culture medium significantly enhanced the emergence and growth of axillary shoots. Increased strength of nitrogen salts in the medium appeared to counteract, at least partially, the inhibitory effect of a high sucrose level on the growth of axillary buds in Syringa vulgaris. There was clearly an interaction between the levels of sucrose and nitrogen salts such that a medium with a low sucrose to nitrogen ratio promoted axillary branching, whereas a medium with a high sucrose to nitrogen ratio inhibited the growth of axillary shoots. The different ratios of sucrose/nitrogen salts in the MS medium and the temperature affected the morphology of lilac plantlets. Increased supply of sucrose strongly stimulated leafsurface area, but the levels of nitrogen salts had a limited effect on leaf size. The plant- lets cultured at a temperature of 15 °C had bigger leaves than the plantlets at 20 °C. Low-sucrose treatments, irrespective of the level of nitrogen salts, induced a compact and branched habit of shoots and inhibited root formation. Increasing sucrose content in the medium resulted in a spontaneous formation of roots on the plantlets cultured in the presence of low levels of nitrogen salts.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Agronomic character of ratoon rice: stem cutting sizes and seprint liquid organic fertilizer

84%
Alridiwirsah A., Tampubolon K., Sihombing F. N., Suprianto A. A., Purba Z.
Acta Agrobotanica
|
2021
|
tom 74
|
nr 1
6

The role of GA, IAA and BAP in the regulation of in vitro shoot growth and microtuberization in potato

84%
Zhang Z., Zhou W., Li H.
Acta Physiologiae Plantarum
|
2005
|
tom 27
|
nr 3B
The effect of auxin, GA and BAP on potato shoot growth and tuberization was investigated under in vitro condition. The shoot length of potato explants increased with the increasing of concentrations (0.5 - 10 mgdm⁻³) of IAA treatment especially with the addition of GA3 (0.5 mgdm⁻³), but was inhibited by BAP (5 mgdm⁻³). The root number and root fresh weight of potato explants increased with the increasing of IAA levels either in the presence of GA3 (treatment IAA+GA) or not (IAA alone). However, no root was observed in the treatment IAA+BAP, inttead there were brown swolten calli formed around the basal cut surface of the explants. The addition of GA3 remarkably increased the fresh weight and diameter of calli. Micro tubers were formed in the treatments of IAA + BAP and IAA + GA + BAP but not observed in the treatments of IAA alone or IAA + GA. IAA of higher concentrations (2.5 - 10 mgdm⁻³) was helpful to form sessile tubers. With the increastng of IAA levels, the fresh weight and diameter of micro tubers increased progressively. At 10 mg/L IAA, the fresh weight and diameter of microtubers in the treatment of IAA + GA + BAP were 409.6 % and 184.4 % of that in the treatment of IAA + BAP respectively, indicating the interaction effect of GA and IAA in potato microtuberization.
7

Salt stress induced biometric and physiological changes in Solanum tuberosum L.cv.Bintje grown in vitro

84%
Evers D., Hemmer K., Hausman J. F.
Acta Physiologiae Plantarum
|
1998
|
tom 20
|
nr 1
Potato plants grown in vitro were subjected to different salt stresses by providing the salts NaCl, Na₂SO₄, MgCl₂ and MgSO₄ in different concentrations up to 300 mM. Salinity greatly affected the survival and the rooting of the plants. Shoot and root growth decreased with increasing salt concentrations. Under mild stress conditions, i.e. in conditions where the plant is able to adapt to the stress, the observed decrease was dependent upon the salt used. Under severe stress conditions, however, the decrease of the shoot and root growth was independent of the nature of the ions.
8

Abscisic acid inhibited shoot growth induced by gibberellic acid in cooled derooted bulbs of tulip [Tulipa gesneriana L.]

84%
Saniewski M., Kawa-Miszczak L., Wegrzynowicz-Lesiak E., Okubo H.
Journal of Fruit and Ornamental Plant Research
|
1999
|
tom 07
|
nr 3
9

Stimulatory effect of 2,3,5-triiodobenzoic acid (TIBA) on shoot growth and flowering of partially cooled tulip (Tulipa gesneriana L.) bulbs

67%
Saniewski M., Okubo H., Miyamoto K., Oka M., Ueda J.
Journal of Fruit and Ornamental Plant Research
|
2011
|
tom 19
|
nr 2
In the present work, 2,3,5-triiodobenzoic acid (TIBA) was applied to uncooled tu­lip bulbs, cultivars Apeldoorn and Gudoshnik, before flower bud formation, at the beginning of July and after flower bud formation, in October and November. Shoot growth and flowering of partially dry-cooled bulbs were substantially stimulated. These results strongly suggest that TIBA partially replaces the cold requirement of the tulip bulbs. In addition, the effect of TIBA is similar to gibberellins applied exogen- ously to the bulbs. Such a gibberellin application partially substitutes for cold treat­ment. Gibberellin application stimulates shoot growth and flowering of tulips. The mode of action of TIBA is discussed in relation to auxin action in tulips.
10
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Content available

Shoot growth in Typha angustifolia L. and Typha latifolia L. in the Kokemaenjoki River delta, western Finland

67%
Aulio K.
International Letters of Natural Sciences
|
2015
|
tom 01
The growth dynamics of two tall littoral helophytic plants, the narrow-leaved cattail (Typha angustifolia L.) and broad-leaved cattail (Typha latifolia L.; Typhaceae) were studied in the rapidly changing estuarine habitats in the Kokemäenjoki River delta, western Finland. The two cattails form uniform, single-species communities (monocultures) throughout the plant-covered estuary. Of the two taxa compared, the shoots were taller in T. angustifolia (mean 166 cm) than in T. latifolia (mean 120 cm). But due to the robust leaves, the relation in the average weight of individual ramets was opposite: The mean weight of T. angustifolia was 9.6 g (dry wt), and that of T. latifolia was 16.5 g. In a separate study, the leaf height was compared between the fertile (flowering) and sterile (non-flowering) ramets. In flowering ramets the average leaf length was 35 cm taller in Typha angustifolia than in T. latifolia. The differences were even more pronounced in sterile ramets, where the leaves of Typha angustifolia were 70 cm taller than those of T. latifolia. The differences were statistically highly significant. Interspecific competition between the two Typha species is negligible, because the microhabitats differ from each other. T. angustifolia grows in considerably deeper (mean depth 42 cm) waters than T. latifolia (mean depth 19 cm). The optimum range in the water depth is markedly stricter in T. angustifolia than in T. latifolia. The differences between the rooting depths of the two cattails were statistically highly significant. The physico-chemical characteristics of the rooting zones (rhizospheres) of the two cattails are similar, with the locally produced (autochthonous) organic matter dominating and determining the fertility of the habitats.
11

Effects of carbohydrates on shoot multiplication and bulb formation of tulip in vitro

67%
Podwyszynska M.
Roczniki Akademii Rolniczej w Poznaniu. Ogrodnictwo
|
2001
|
tom 33
12

Screening for soil streptomycetes from North Jordan that can produce herbicidal compounds

67%
Bataineh S. M. B., Saadoun I., Hameed K. M., Arabneh Q.
Polish Journal of Microbiology
|
2008
|
tom 57
|
nr 4
A total of 231 different soil Streptomyces isolates were recovered from 16 different locations in North Jordan. They were assessed for their phytotoxic activity on seeds of cucumber (Cucumis sativus L.) and ryegrass (Lolium perenne L.) placed adjacent to a 2 cm wide Streptomyces culture strips grown at 28C° for 3 weeks on starch casein nitrate (SCN) agar. Phytotoxicity was ascertained on the basis of suppressed seed germination, discoloration of the root tip, reduced root and the shoot growth and eventual death of the root. Twenty one of the isolates exhibited adverse effect against growth of germinated cucumber seeds, germination and growth of ryegrass seeds. Using filter paper bioassay method, culture filtrate from the SCN broth of the isolate R9; identified as Streptomyces aburaviensis, significantly inhibited seed germination, radicle and shoot growth of ryegrass, reduced radicle and shoot growth of cucumber and suppressed the shoot growth of milk thistle (Silybum marianum L.). Also, culture filtrate from the glucose-peptone-molasses (GPM) broth diluted (1:1) with sterilized distilled water caused complete inhibition of seed germination of redroot pigweed (Amaranthus retroflexus L.). Dichloromethane extracted fraction of S. aburaviensis (strain R9) culture filtrate from GPM broth completely inhibited seed germination of ryegrass when applied at doses of 3 and 5 mg of dry weight, and the seedling growth of cucumber and milk thistle was severely reduced by the same doses.
13

Frekwencja mikoryzowa a wzrost brzozy (Betula verrucosa EHRH.) na terenie silnie zdegradowanym w Miasteczku Śląskim

51%
Krupa P.
Acta Biologica Silesiana
|
1990
|
tom 16
14

Wplyw mutagenow chemicznych na zmiennosc indukowana u rzepaku ozimego

43%
Adamska E., Jezowski S., Olejniczak J., Rybinski W.
Rośliny Oleiste - Oilseed Crops
|
1995
|
tom 16
|
nr 1
57-62
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