Performance and quality of Cupressus sempervirens L. mini-plug seedlings under reduced photoperiod

Κωστοπούλου, Π.; Radoglou, K.; Dini-Papanastasi, O.

doi:10.1007/s10342-010-0447-3

Cited by 8 publications

(6 citation statements)

References 45 publications

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“…One of the most significant abiotic stresses of these very high-latitude forests was the extreme light regime, i.e., four months of 24-hour darkness, four months of 24-hour daylight, and four months of transition (Taylor and Ryberg, 2007;Gulbranson et al, 2012). Additionally, extant studies and experiments on conifers show that arborescent organisms under extreme photoperiod regimes can retain the capacity to regenerate their photosynthetic pigments after time intervals of complete darkness, i.e., for up to 140 days (Larson, 1964;Kostopoulou et al, 2011). Furthermore, it is a well-understood phenomenon that under extremely stressful situations, extant trees increase carbon allocation to roots and mycorrhiza (McDowell et al, 2008;Evelin et al, 2009;Miransari, 2010;Swidrak et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi in a voltzialean conifer from the Triassic of Antarctica

Harper

Taylor

Krings

et al. 2015

Review of Palaeobotany and Palynology

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Mycorrhizas are intimate mutualistic relationships between plants and fungi that represent an integral component of ancient and extant ecosystems. These symbioses have been established for at least 400 million years and are found in numerous fossil plant groups, including early land plants, seed ferns, and cordaitaleans. In modern ecosystems, it is common for different types of mycorrhizas to occur within a single plant; however, fossil evidence of this is exceedingly scarce. A vesicular-arbuscular mycorrhiza is described in Notophytum krauselii (voltzialean conifers) based on permineralizations from the Middle Triassic of Antarctica. This symbiosis occurs in young non-nodular roots and is characterized by fungal hyphae, vesicles, and arbuscules within a discrete zone of the root cortex. Together with the mycorrhizal root nodules described previously for N. krauselii, this discovery represents only the second record of multiple types of mycorrhizae occurring within the same fossil plant, and provides important information on the system of interactions that may have allowed voltzialean conifers to survive in an extreme paleoenvironment.

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Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi in a voltzialean conifer from the Triassic of Antarctica

Harper

Taylor

Krings

et al. 2015

Review of Palaeobotany and Palynology

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“…This pot size is highly recommended for the first five weeks growth in order to improve survival and outplanting success of C. sempervirens seedlings (Kostopoulou et al . , ). After one month, seedlings were transplanted into larger pots (9 × 9 × 9.5 cm) with the same soil composition.…”

Section: Methodsmentioning

confidence: 99%

“…Forty-eight seedlings per population (two to five days old) were randomly selected and planted individually into small pots (4 × 4 × 4.5 cm) containing a mixture (1:1) of sand and compost. This pot size is highly recommended for the first five weeks growth in order to improve survival and outplanting success of C. sempervirens seedlings (Kostopoulou et al 2010(Kostopoulou et al , 2011a. After one month, seedlings were transplanted into larger pots (9 × 9 × 9.5 cm) with the same soil composition.…”

Section: Experimental Designmentioning

confidence: 99%

Performance of seedlings from natural and afforested populations ofCupressus sempervirensunder different temperature and moisture regimes

Al-Hawija

Lachmuth

Welk

et al. 2014

Plant Species Biology

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For successful afforestation programs seed quality is crucial, but seedlings are susceptible to climatic stress. Therefore, to improve afforestation success it is necessary to compare performance of seedlings from natural and cultivated populations under different climatic conditions. We investigated growth performance in seedlings of three natural and four afforested Syrian Cupressus sempervirens L. populations under different temperature and moisture regimes. A "warm" climate chamber approximately simulated current mean annual temperatures (day/night: 20/10°C) while a "hot" chamber simulated an average increase of 5°C (day/night: 25/15°C). Seedlings were irrigated twice (drier) or thrice (moist) weekly. Seedlings from natural provenances outperformed those from afforested stands in all growth variables in both chambers. In the warm chamber, root length and biomass were not affected by irrigation for both population types, but shoot height decreased for afforested seedlings under drier treatment while it slightly increased in natural seedlings. In the hot chamber, shoot height decreased but root length and biomass increased for population types under the drier treatment. Comparison between the two chambers showed that under the drier treatment shoot height and biomass decreased at higher temperatures, but root length and biomass were not significantly different. The same response to higher temperatures was observed under the moist treatment, but root biomass decreased too. Our results emphasize the necessity to protect the remaining natural forest of C. sempervirens in Syria and recommend systematic collection of seed material from natural stands for afforestation programs. This might also hold for ex situ cultivation of retrieving rare and endangered plant species.

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“…Relative to consistent use at high latitudes (> 45° N), short-day treatment is sometimes implemented by growers in mid-latitudes (Landis et al 1992), where night length is relatively long and does not vary as much between summer and winter (Kostopoulou et al 2011). However, studies conducted in mid-latitudes (30°-45° N) have proven that short-day treatments effectively altered seedling size and root growth capacity of transplants (Jacobs et al 2008, Kostopoulou et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…However, studies conducted in mid-latitudes (30°-45° N) have proven that short-day treatments effectively altered seedling size and root growth capacity of transplants (Jacobs et al 2008, Kostopoulou et al 2011). These findings indicate that short-day cultural practices can also manipulate the quality of mid-latitude tree species.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of short-day treatment and fall fertilization on growth, nutrient status, and spring bud break of Pinus tabulaeformis seedlings

Pan¹,

Jacobs²,

Li³

2017

iForest

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Although effects of short-day treatment and fall fertilization on seedling development have been studied independently, their combined influences are not well elucidated. We explored growth, nutrient concentration, and spring bud break of Chinese pine (Pinus tabulaeformis Carr.) seedlings exposed to two photoperiod treatments (short-day consisting of 3 weeks of 18-hr nights in late summer and ambient day length) and three rates of fall N fertilization (0, 12 and 24 mg N per seedling). Seedlings were assessed before fall fertilization and at the end of the growing season. Bud break timing was evaluated the following spring. Increased foliar P concentration concurrent with reduced root P and K concentration occurred in short-day treated seedlings at the conclusion of photoperiod treatment. By the end of the growing season, short-day treatment resulted in greater N and P concentration in the stems, and P concentration in the foliage. It also induced smaller foliage and stem dry mass in both stages. Fall fertilization consistently enhanced tissue N concentration, but interaction effects with short-day treatment were generally non-significant. Short-day treatment curtailed shoot growth, induced terminal bud set, and hastened spring bud break (by only one day) for this mid-latitude seed source (41° N). Thus, short-day treatment or fall fertilization each promoted an increased nutrient concentration, while having only a minor effect on spring bud break.

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Performance and quality of Cupressus sempervirens L. mini-plug seedlings under reduced photoperiod

Cited by 8 publications

References 45 publications

Arbuscular mycorrhizal fungi in a voltzialean conifer from the Triassic of Antarctica

Arbuscular mycorrhizal fungi in a voltzialean conifer from the Triassic of Antarctica

Performance of seedlings from natural and afforested populations ofCupressus sempervirensunder different temperature and moisture regimes

Combined effects of short-day treatment and fall fertilization on growth, nutrient status, and spring bud break of Pinus tabulaeformis seedlings

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