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Induction of Hippeastrum x hybr. hort. scape growth by auxin

100%
Saniewski M., Okubo H.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2005
|
tom 504
|
nr 1
It was showed that indole-3-acetic acid at a concentration of 0.1% in lanolin paste, applied in the place of excised flower bud of Hippeastrum, directly after sprouting of the flower bud from the bulb, induced scape growth similarly to intact plants in the presence of flower bud. Removal of the flower bud in Hippeastrum totally inhibited scape growth and its dying. It is suggested that the mechanism of hormonal control of flower stalk in different species of bulbous plants is the same or similar.
2

Effect of morphactin on stem growth in relation to auxin in precooled rooted tulip bulbs

80%
Saniewski M., Okubo H., Puchalski J.
Acta Physiologiae Plantarum
|
1999
|
tom 21
|
nr 2
Effect of morphactin IT 3456, an auxin transport inhibitor, on tulip stem elongation induced by indole-3-acetic acid (IAA) was investigated. Tulip stem growth induced by IAA 0.1 % in lanolin paste applied on the top internode after excision of flower bud and removal of all leaves was greatly inhibited by 0.2 % morphactin IT 3456 applied on the 4th, 3rd, 2nd and 1st internode. The inhibitory effect of the morphactin on tulips stem growth promoted by IAA was restored by additional application of IAA below the morphactin treatment place. Morphactin inhibited also the growth of all internodes induced by flower bud in the absence of leaves. These results suggest a crucial role of auxin in the control growth of all internodes in tulip stem.
3

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

80%
Saniewski M., Kawa-Miszczak L., Wegrzynowicz-Lesiak E., Okubo H.
Journal of Fruit and Ornamental Plant Research
|
1999
|
tom 07
|
nr 3
4

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

71%
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.
5

Methyl jasmonate induces gum and inhibits stem growth promoted by auxin in uncooled tulip bulbs

71%
Saniewski M., Ueda J., Miyamoto K., Okubo H., Puchalski J.
Acta Physiologiae Plantarum
|
2004
|
tom 26
|
nr 3 suppl.
6

Interaction of methyl jasmonate and ethephon in gum formation in tulip bulbs

71%
Saniewski M., Ueda J., Miyamoto K., Okubo H., Puchalski J.
Polish Journal of Natural Sciences. Supplement
|
2003
|
tom 01
7

Different growth of excised and intact fourth internode after removal of the flower bud in growing tulips: focus on auxin action

61%
Saniewski M., Goraj J., Wegrzynowicz-Lesiak E., Okubo H., Miyamoto K., Ueda J.
Journal of Fruit and Ornamental Plant Research
|
2010
|
tom 18
|
nr 2
297-308
The present study is concerned with auxin action in intact and excised 4th inter­node of tulip shoot after removal of the flower bud in relation to the growth stages. Elongation of the intact 4th internode with or without leaves, after removal of the flower bud, at different stages was very weak. This suggests that the flower bud is always responsible for elongation growth of the 4th internode. Auxin (IAA at 0.1%, w/w in lanolin) exogenously applied to the cut surface of tulip shoot with or without leaves, greatly stimulated the growth of the 4th and lower internodes of tulip shoot. The elongation growth of excised 4th internode of tulip shoot with or without node, after removal of the flower bud was much higher, in comparison with that of intact 4th internode in tulip shoot which was growing and in which the flower bud had been cut. Elongation depended on the initial length of the 4th internode. IAA at 0.1% applied to the cut surface of excised 4th internode, just after removal of flower bud, slightly in­creased the growth of the 4th internode. The promotion was observed only during the first or second day of the experiment. Finally, auxin did not stimulate, or had no effect on elongation of excised 4th internode with or without node. On the other hand, elon­gation growth of the excised 4 th internode with a flower bud was almost independent of the initial length of the 4th internode. Differences in the growth of excised and intact 4th internode of tulip shoot after removal of the flower bud are discussed in relation to auxin action.
8

Chemical compositions of exudates from succulent plants induced by methyl jasmonate

61%
Ueda J., Miyamoto K., Saniewski M., Hoshino T., Utsunomiya M., Okubo H.
Acta Physiologiae Plantarum
|
2002
|
tom 24
|
nr 2
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