Studies with Liatris spicata Willd. 1. Effect of Temperature on Sprouting, Flowering and Gibberellin Content

Zieslin, N.; Geller, Z.

doi:10.1093/oxfordjournals.aob.a086643

Cited by 10 publications

(6 citation statements)

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“…Exogenous application of GA 3 is known to replace (Dahanayake and Galwey, 1999), or partially replace (Zieslin and Geller, 1983) chill unit requirements in a range of herbaceous perennials. In a summary of unpublished technical reports based on older cultivars of gentian, the application of GA 3 (100 ppm) resulted in shoot emergence in dormant plants, but these shoots did not produce flowers (Ohkawa, 1983).…”

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confidence: 99%

Ontogeny of Crown Bud Clusters and Dormancy-breaking Treatments Influence Productivity and Spread of Harvest Maturity of Gentian ‘Showtime Diva’

Samarakoon

Woolley

Morgan

et al. 2016

horts

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Cut flower productivity and quality of gentian is associated with growth and development of crown buds. Experiments were carried out with the gentian cultivar Showtime Diva to identify the response to treatments that break dormancy [cold temperature (chilling), gibberellic acid (GA3)] applied at different stages of development of crown buds (plants with nonemerged crown buds, shoots recently emerged, or shoots emerged and elongated). The comparative growth potential of crown buds within the cluster was also investigated. At the stages of development examined, the application of GA3 (100 ppm) increased emergence of crown buds as shoots, leading to development of more flowering shoots. A similar response was observed with exposure to cold, but only on plants with nonemerged crown buds. Shoot emergence increased in response to increased duration of cold from 0 to 42 days (5 °C). Both chilling and GA3 could potentially be used to reduce the duration to, and spread of, harvest maturity if applied before shoot emergence. The hierarchical relationship of buds in crown bud clusters led to differential responses to application of GA3. Buds ontogenetically positioned at the proximal end of the bud cluster took a similar duration to reach shoot emergence or harvest maturity. For buds located at the distal end there was a positive correlation between ontogenetic bud position and the duration to reach shoot maturity. Shoot length and number of nodes at harvest maturity showed slight negative correlations with the position of the bud in the bud cluster. The results provide an explanation for possible sources of the variation in quality and quantity of floral shoots, and spread in time to harvest maturity within a single plant, and with development stage.

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confidence: 99%

Ontogeny of Crown Bud Clusters and Dormancy-breaking Treatments Influence Productivity and Spread of Harvest Maturity of Gentian ‘Showtime Diva’

Samarakoon

Woolley

Morgan

et al. 2016

horts

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“…Our data suggests that shoot sprouting is not a cold-requiring response since plants sprouted either after a cold treatment (Fig. 1) or without one (Zieslin and Geller, 1983a). The absence of marketable inflorescences without a dormancy-breaking cold treatment in both summer and winter Israeli-produced corms (Zieslin, 1985;Zieslin and Geller, 1983a) is not clearly explained by our data, although we believe that shoot sprouting (Fig.…”

Section: Discussionmentioning

confidence: 58%

“…1). The rapid, uniform sprouting at temperatures 20C may explain summer sprouting of noncooled winter-grown plants in Israel and Kenya (Waithaka, 1985;Zieslin and Geller, 1983a). Our data suggests that shoot sprouting is not a cold-requiring response since plants sprouted either after a cold treatment (Fig.…”

Section: Discussionmentioning

confidence: 62%

“…Although soil temperature effects on Liatris spicata development have not been studied, several authors have suggested that growth responses are regulated by soil temperature (Waithaka, 1985;Zieslin, 1985). Unspecified low soil temperatures during the wet and cool months will cause sprouting of nonchilled corms that flowered during the preceding warmer months in "Kenya and Israel (Waithaka, 1985;Waithaka and Wanjao 1983;Zieslin and Geller, 1983a). Although the corms sprouted, flowering was sporadic and delayed compared to corms that receive a cold treatment before planting.…”

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confidence: 99%

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The Role of Temperature and Photoperiod on Liatris spicata Shoot Development

Espinosa¹,

Healy²,

Roh³

1991

jashs

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Additional index words. cut flower, soil temperature, stem elongation, long day, short day Abstract. Shoot emergence of cold-treated Liatris spicata Willd. corms was inhibited by SC soil, delayed at 10 or 15C (7 and 5 days, respectively), and promoted at 20, 25, or 30C. Within 15 days after planting, soil at 20C promoted the highest percentage of shoot emergence (81%). Plants were grown during the first 35 days after emergence under a combination of temperature and long or short days. Flowering shoot length was increased by either short days (8 hours; SD) at 13 or 15C or a 4-hour incandescent night interruption (NI) at 18C. When planted in May, a NI at 15 or 18C decreased the time to harvest by up to 14 days, whereas in November increasing the temperature to 18C, regardless of photoperiod, decreased the days to harvest by 16 days. Plants grown during the first 35 days after emergence under natural days at 15C then placed at 13, 15, or 18C under NI until harvest did not respond to the increasing temperature. Temperature and photoperiod influence Liatris development primarily during the first 35 days of development.

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“…PGR extraction and isolation from tissue samples were done using a combined method [10][11][12][13][14] with some modifications. PGRs were assayed spectrophotometrically according to the literature [15][16][17].…”

Section: Extraction Proceduresmentioning

confidence: 99%

Analysis of gibberellic acid, abscisic acid, indole‐3‐acetic acid and zeatin from the selected tissues of albino mice

Yavas

Özmen

Topcuoglu

1997

Toxicological & Environmental Chemistry

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Studies with Liatris spicata Willd. 1. Effect of Temperature on Sprouting, Flowering and Gibberellin Content

Cited by 10 publications

References 0 publications

Ontogeny of Crown Bud Clusters and Dormancy-breaking Treatments Influence Productivity and Spread of Harvest Maturity of Gentian ‘Showtime Diva’

Ontogeny of Crown Bud Clusters and Dormancy-breaking Treatments Influence Productivity and Spread of Harvest Maturity of Gentian ‘Showtime Diva’

The Role of Temperature and Photoperiod on Liatris spicata Shoot Development

Analysis of gibberellic acid, abscisic acid, indole‐3‐acetic acid and zeatin from the selected tissues of albino mice

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