Interactive effects of salinity and water depth on the growth of Melaleuca ericifolia Sm. (Swamp paperbark) seedlings

Salter, Jacqueline; Morris, Kaylene; Bailey, Paul; Boon, Paul I.

doi:10.1016/j.aquabot.2006.10.002

Cited by 48 publications

(33 citation statements)

References 19 publications

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“…Either way, it is the duration of the draw-down period that would be most important to the sexual recruitment of M. ericifolia since it establishes the conditions that not only allow for seed release but also those conditions that are best for germination and seedling establishment. Although M. ericifolia seedlings do not appear to tolerate long periods of complete submergence in summer, particularly if conditions are saline (Raulings et al, 2007;Salter et al, 2007), Salter et al (2008) have found that if M. ericifolia seedlings are flooded with fresh water in winter when dormant, and re-exposed in spring during their growth period, then the young seedlings can rapidly recover from these seemingly adverse environmental conditions. The findings of Salter et al (2008) suggest that the impact of flooding on sexual recruitment in M. ericifolia would be strongly influenced by how hydrological events link to the dormant and active phases of a plant's growth cycle.…”

Section: Discussionmentioning

confidence: 97%

Aerial seed storage in Melaleuca ericifolia Sm. (Swamp Paperbark): environmental triggers for seed release

et al. 2008

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Aerial seed banks are potentially the main source of sexual recruitment for woody wetland plants. Whilst the importance of soil seed banks for the persistence and recruitment of wetland plants has been examined in many studies, the role of aerial seed banks has been largely neglected. We used seed traps and the seedling emergence technique to quantify the seed rain from aerial seed banks of the Swamp Paperbark Melaleuca ericifolia Sm. (Myrtaceae) in Dowd Morass, a Ramsar-listed, brackish-water wetland in south-eastern Australia. Nine plant species germinated from material collected in seed traps over 2004-2005, but emergents were dominated (80-97%) by M. ericifolia. The mean number of M. ericifolia emergents ranged from \1 to \100 seedlings m -2 day -1 , and showed a peak in the summer-autumn period. Regression analysis showed a significant negative correlation (r 2 = 0.738) between the number of M. ericifolia emergents and water depth. Water depth and salinity were negatively correlated (r 2 = 0.819), and increases in the number of M. ericifolia emergents as water levels fell were also associated with high salinities. Increasing air temperature and vapour pressure deficit also stimulated seed release during periods of drying. This study is one of the first to demonstrate the importance of aerial seed banks for sexual recruitment in woody wetland plants and the release of seed in relation to environmental factors. Aerial seed banks warrant consideration alongside soil seed banks for the establishment and long-term survival of woody plants in wetlands.

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Section: Discussionmentioning

confidence: 97%

Aerial seed storage in Melaleuca ericifolia Sm. (Swamp Paperbark): environmental triggers for seed release

et al. 2008

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“…For example, Lockhart (1996) reported that Melaleuca quinquenervia survived for 26 weeks and developed heterophylly under submergence. In contrast, Salter et al (2007) reported that Melaleuca ericifolia stopped growing under submergence. Parolin (2009) reported that Astrocaryum jauari in Amazonian swamps stopped growing but survived under water at depths exceeding 10 m for 300 days.…”

Section: Introductionmentioning

confidence: 88%

Morphological and anatomical changes of Melaleuca cajuputi under submergence

Tanaka

Masumori

Yamanoshita

et al. 2011

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Melaleuca cajuputi is a woody plant of the Myrtaceae which is a dominant species in tropical peat swamps in southern Thailand, where the groundwater level fluctuates greatly. Although the current year seedlings are likely submerged, their adaptive responses have never been studied. The objective of the present study was to examine their responses to submergence, and especially their morphological and anatomical changes. Not only did the seedlings of M. cajuputi survive submergence for 56 days, but they could also increase their dry weight, shoot length, and leaf number during submergence. These growth responses to submergence indicate that the seedlings of M. cajuputi could make photosynthetic production under water. The leaves that developed under water were heterophyllous ''aquatic leaves'' that appear to represent adaptations to improve the uptake of gases from the water. Intercellular spaces in the stems and leaves were more strongly developed in the submerged seedlings than in nonsubmerged seedlings with the shoot and leaves in the air. The intercellular spaces appear to be schizogenous aerenchyma that facilitates gas exchange. The growth responses and anatomical responses in stems and leaves to submergence, which were found in M. cajuputi, are commonly known in herbaceous plants with amphibious characteristics, but had not been reported in woody plants. And our results suggest that M. cajuputi adapts to submergence similarly to other amphibious plants, thereby ensuring continuing biomass production.

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“…The differences in the growth critetria among species and cultivars might be used as a suitable selection criterion for the drought tolerance of these species and genotypes. The inhibitory effect of drought on growth parameters could be attributed to the osmotic effect of water stress [26,34,35]. Also, the reduction of yield may be ascribed to the harmful effect of soil moisture stress and nutrient balance disorder in root media [36], or reduced rate of new cell production may be make additional contribution to the inhibition of growth [37][38][39].…”

Section: Discussionmentioning

confidence: 99%

Interactive Effects of Drought Stress and Phytohormones or Polyamines on Growth and Yield of Two M(<i>Zea maize</i> L) Genotypes

Shaddad¹,

El-Samad²,

Mohammed³

2011

AJPS

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Interactive effects of salinity and water depth on the growth of Melaleuca ericifolia Sm. (Swamp paperbark) seedlings

Cited by 48 publications

References 19 publications

Aerial seed storage in Melaleuca ericifolia Sm. (Swamp Paperbark): environmental triggers for seed release

Aerial seed storage in Melaleuca ericifolia Sm. (Swamp Paperbark): environmental triggers for seed release

Morphological and anatomical changes of Melaleuca cajuputi under submergence

Interactive Effects of Drought Stress and Phytohormones or Polyamines on Growth and Yield of Two M(<i>Zea maize</i> L) Genotypes

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Interactive effects of salinity and water depth on the growth of Melaleuca ericifolia Sm. (Swamp paperbark) seedlings

Cited by 48 publications

References 19 publications

Aerial seed storage in Melaleuca ericifolia Sm. (Swamp Paperbark): environmental triggers for seed release

Aerial seed storage in Melaleuca ericifolia Sm. (Swamp Paperbark): environmental triggers for seed release

Morphological and anatomical changes of Melaleuca cajuputi under submergence

Interactive Effects of Drought Stress and Phytohormones or Polyamines on Growth and Yield of Two M(&lt;i&gt;Zea maize&lt;/i&gt; L) Genotypes

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Interactive Effects of Drought Stress and Phytohormones or Polyamines on Growth and Yield of Two M(<i>Zea maize</i> L) Genotypes