Effects of Interspecific Pollination on Stylar Ethylene Production and Flower Longevity in Petunia Hybrida

Hoekstra, Folkert A.; Roekel, G.C. van

doi:10.17660/actahortic.1986.181.12

Cited by 9 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pollination of nonemasculated flowers enhanced senescence, similarly to that of emasculated-pollinated flowers (Table 1) . In petunia flowers, only pollen capable of germination and growing in the pistil shortened flower life, while foreign pollen or irradiation-killed pollen that did not germinate were unable to accelerate wilting [8] . 4) or of intact phalaenopsis flowers [12] did not induce the production of ethylene and the (Table 3), as was the response to pollination .…”

Section: Discussionmentioning

confidence: 99%

Pollination-induced senescence of Phalaenopsis petals

et al. 1994

View full text Add to dashboard Cite

The longevity of cut Phalaenopsis (Phalaenopsis hybrid, cv. Herbet Hager) flowers is normally 2 to 3 weeks . After pollination however, there was a rapid acceleration of the wilting process, beginning after only 24 h . Enhancement of senescence in several Phalaenopsis cultivars as well as in Doritaenopsis, Dendrobium and Cymbidium, was induced by successful pollination and only slightly or not at all by emasculation . Wilting of the flowers was accompanied by a loss of water from cells of the upper layer of the petals, leading to their upward folding . Following pollination there was an increase in ethylene production and sensitivity to ethylene . The increase in ethylene production began about 10 h after pollination and reached its peak after 30 h . An obvious increase in sensitivity to ethylene could already be detected 4 h after pollination and reached its peak 10 h after pollination . The increase in ethylene sensitivity following pollination was not dependent on endogenous ethylene production as it occurred also in flowers treated with (aminooxy)acetic acid, an inhibitor of ethylene biosynthesis .Abbreviations: AOA = (aminooxy)acetic acid ; RH = relative humidity ; SEM = scanning electron microscope

show abstract

Section: Discussionmentioning

confidence: 99%

Pollination-induced senescence of Phalaenopsis petals

et al. 1994

View full text Add to dashboard Cite

show abstract

“…Its authenticity was further ascertained by the conversion into ethylene on AVG-treated stigmas of a partially purified petunia pollen eluate (using QAE A-25 Sephadex). A similar eluate from Typha pollen which lacks ACC (7), was unable to evoke ethylene synthesis on AVG-treated stigmas.…”

mentioning

confidence: 93%

“…Although IAA is effective in stimulating wilting and ethylene synthesis after stylar application in orchids (2), it cannot evoke similar events in carnation (13) and Petunia (7). Moreover, as IAA is rather immobile in the style (17) it is unlikely to function as pollination signal.…”

mentioning

confidence: 99%

Lack of Control by Early Pistillate Ethylene of the Accelerated Wilting of Petunia hybrida Flowers

Hoekstra

Weges²

1986

Plant Physiol.

View full text Add to dashboard Cite

Well before pollen tube penetration, ethylene has begun to disseminate from pollinated styles of Petunia hybrida flowers. Previous stigmatic application of aminoethoxyvinylglycine (AVG) completely prevented this ethylene synthesis, indicating that the endogenous 1-aminocyclopropane-1-carboxylic acid (ACC) in pollen is not readily converted on the stigma. Compared to other flower parts, the capacity of the ethylene forming enzyme was largest in the stigma. When applied to the stigma, ACC caused ethylene synthesis, but did not accelerate wilting, unless high concentrations (20 nanomols) were used. Upon pollination or stigma wounding, the early ethylene evolved exclusively from the gynoecium, much later followed by the synthesis of corolla ethylene. Employing wideneck Erlenmeyer flasks, the competitive inhibitor of ethylene action, norbornadiene, was applied to entire flowers in situ, with delaying effects on wound-induced wilting. In contrast, norbornadiene treatment of styles alone, using capillaries, could not postpone wilting. Pollination with foreign pollen species did not lead to accelerated corolla wilting, notwithstanding considerable synthesis of ethylene during the frst 5 hours. In situ treatment of the stigma with AVG considerably delayed wound-and pollination-induced wilting. Removal of the entire AVG-treated style 6 hours after stigma wounding still allowed for the postponement of the accelerated wilting, even at very low concentrations of AVG. It is concluded that early stylar ethylene does not play a role in the acceleration of wilting but that, much later, corolla ethylene does, induced by a mobile wilting factor from the stigma, which is ACC. levels ofthe immediate precursor, ACC' (24). The sequential rise in ACC content of carnation stigmas, ovaries, receptacles, and petals upon pollination strongly suggests that ACC might be the mobile wilting stimulus (12). Pollen itself might be the trigger in this respect as it sometimes contains large amounts of ACC (F.

show abstract

“…Such treatments have no effect in D . caryophyllus and Petunia [14,23] . Furthermore, pollen germination and penetration into the stigma generally occur within a few h after pollination in D .…”

Section: 1 Pollinationmentioning

confidence: 99%

“…O'Neill, personal communication) . Although pollen itself may contain considerable amounts of ACC [14,29], the early increase in ethylene production following pollination in Petunia apparently results from de novo synthesis of ACC synthase . Pre-treatment of the stigma with AVG and cycloheximide effectively blocked pollinationinduced ethylene production [13,22] .…”

Section: 1 Pollinationmentioning

confidence: 99%

Roles of pollination and short-chain saturated fatty acids in flower senescence

Woltering¹,

Hout²,

Somhorst³

et al. 1993

Plant Growth Regul

View full text Add to dashboard Cite

Pollination induced an immediate increase in ethylene production in Dianthus caryophyllus and Petunia hybrida . In Cymbidium, a lag of several hours was observed . In all three species, pollination induced premature flower senescence . Treatment of the stigmatic surface with aminoethoxyvinylglycine prior to pollination effectively blocked the increase in ethylene production and alleviated the detrimental effect of pollination on flower life .In all three tested species, octanoic and decanoic acids, when applied to the stigmatic surface, had no effect on ethylene production and flower life . In isolated Cymbidium lips placed with their cut base in solutions containing these fatty acids, no effects on red colouration, ethylene production, and ethylene forming enzyme activity were observed . In addition, ethylene sensitivity of isolated lips was not affected . The putative regulatory role of short-chain saturated fatty acids in (pollination-induced) flower senescence is discussed .

show abstract

Effects of Interspecific Pollination on Stylar Ethylene Production and Flower Longevity in Petunia Hybrida

Cited by 9 publications

References 0 publications

Pollination-induced senescence of Phalaenopsis petals

Pollination-induced senescence of Phalaenopsis petals

Lack of Control by Early Pistillate Ethylene of the Accelerated Wilting of Petunia hybrida Flowers

Roles of pollination and short-chain saturated fatty acids in flower senescence

Contact Info

Product

Resources

About