Seed germination behaviour of Diplotaxis tenuifolia

Sakcali, Mehmet Serdal; Serin, Memduh

doi:10.5053/ejobios.2009.3.0.14

Cited by 8 publications

(7 citation statements)

References 15 publications

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“…Plant density was highest in spring and summer (Table 3); this response is consistent with germination studies that show that perennial wall rocket germinates best at higher temperatures (Kleemann et al, 2007;Sakcali and Serin, 2009). These seasons also correspond with the natural periods of growth for this species.…”

Section: Perennial Wall Rocketsupporting

confidence: 87%

“…The GDDs required to reach maturity were similar in spring and summer; however, more GDDs were needed in the winter (Table 4). This result may have been influenced by extension of the establishment phase during winter because germination of perennial wall rocket is sensitive to low temperatures (Hall et al, 2012;Kleemann et al, 2007;Sakcali and Serin, 2009). More GDDs were accumulated because the crop took longer to establish during this season.…”

Section: Perennial Wall Rocketmentioning

confidence: 93%

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Factors Affecting Growth of Perennial Wall Rocket and Annual Garden Rocket

Hall

Jobling

Rogers

2012

International Journal of Vegetable Science

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Popularity of baby leaf salad crops has increased and is likely to continue. Despite their commercial importance, cultivation of these crops is limited by a lack of appropriate production systems. It is important to establish abiotic constraints for efficient production of these crops to improve supply and quality. In separate experiments, responses of perennial wall rocket (Diplotaxis tenuifolia [L.] DC.) and annual garden rocket (Eruca sativa Mill.) to harvest number, seasonal conditions, and fertilizer level were measured. The yield of perennial wall rocket was influenced by the interaction between the cultivar, harvest number, and season. No clear response between these factors was identified, with the highest yields for the cvs. European wild rocket [DT1] and Apollo [DT2] for the first harvest summer crop (2.7 and 2.8 kg/m 2 , respectively) and the cv. Nature [DT3] for the second harvest summer and spring crops (2.5 kg/m 2 , respectively). For annual garden rocket, there was an interaction between the yield and season with the highest yield during summer (3.3 kg/m 2 ), followed by winter (2.7 kg/m 2 ) and spring (1.9 kg/m 2 ). Nitrogen rate did not affect yield or dry weight for either crop, meaning that the species require only little additional nitrogen for efficient growth, and crops may currently be overfertilized. Optimal production is achieved during spring and summer for perennial wall rocket and summer and winter for annual garden rocket, allowing for the interchangeable use of species throughout the growing seasons. The growth of perennial wall rocket improves from first to second harvest but decreases for annual garden rocket, meaning that the perennial species is better suited to at least two harvests.

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Section: Perennial Wall Rocketsupporting

confidence: 87%

Section: Perennial Wall Rocketmentioning

confidence: 93%

Factors Affecting Growth of Perennial Wall Rocket and Annual Garden Rocket

Hall

Jobling

Rogers

2012

International Journal of Vegetable Science

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“…The few available studies on D. tenuifolia (Kleemann et al, 2007;Sakcali and Serin, 2009;Hall et al, 2012;Lazar et al, 2012) and D. erucoides (Pérez García et al, 1995;Martínez Laborde et al, 2007) germination show that viable, nondormant seeds of both species can reach high (>80%) germination percentages. However, previous works also suggest that D. erucoides seed germination may decline during storage due to the development of secondary dormancy, which could be mistaken for seed viability loss (Pérez García et al, 1995;Martínez Laborde et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Germination and electrical conductivity tests on artificially aged seed lots of 2 wall-rocket species

Lazar¹,

Mira

Pamfil³

et al. 2014

Turk J Agric For

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The aim of this study was to determine whether the loss of germinability and vigour in wall-rocket seed lots was related to electrolyte leakage. Ten seed lots of 2 wall-rocket species (9 of Diplotaxis tenuifolia and one of D. erucoides (Brassicaceae)) were stored at 45 °C and 70% relative humidity and electrolyte leakage was measured using the conductivity test. Small differences in longevity were found among species or seed lots, suggesting that a similar relative longevity might be expected within the genus Diplotaxis after artificial ageing, and that it will be above the average of that found in other species of the same family at similar storage conditions. Electrolyte loss was strongly related to loss of seed viability. There was a negative linear relationship between conductivity and seed germination (R 2 = 0.85), and a positive relationship with T 50 (R 2 = 0.77). Small differences were found among species or seed lots regarding the correlation between electrolyte leakage and seed germination and vigour. Our results indicate that the conductivity method is able to predict the viability of wall-rocket seeds stored at 45 °C and 70% RH, with the same regression equation of conductivity and germination (-33.97x + 135.59) being able to predict the viability of different seed lots and species. A conductivity level ranging from 1.4 to 2.2 mS g -1 DW would indicate that the potential of a Diplotaxis seed lot to germinate has decreased to 80%. The correlation between electrolyte leakage and seed germination provides a valuable means for early detection of seed viability in wall-rocket seeds.

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“…The germination percentage for cultivars of perennial wall rocket and annual garden rocket are similar at optimal temperatures when compared to those of seeds collected from wild parental plants (Kleemann et al, 2007;Pita Villamil et al, 2002;Sakcali & Serin, 2009); indicating the selection of both rocket species in breeding programs has not significantly improved their germination relative to wild populations.…”

Section: Germination Characteristicsmentioning

confidence: 89%

Fundamental Differences between Perennial Wall Rocket and Annual Garden Rocket Influence the Commercial Year-Round Supply of These Crops

Hall¹,

Jobling²,

Rogers³

2015

JAS

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Perennial wall rocket (Diplotaxis tenuifolia [L.] DC.) and annual garden rocket (Eruca sativa Mill.) are cultivated around the world as salad crops and as an ingredient of condiments. From a botanical perspective these species are classified in the Rapa/Oleracea linage, which is consistent with their similar morphological characteristics, chromosomal number and the diversity of glucosinolates. It is understandable that these species have been informally grouped together for convenience. However, the evaluation of a wide range of factors over a typical production cycle has clearly illustrated that these species should be considered distinct crops from a commercial perspective. We will demonstrate with examples why these species should be managed differently and considered commercially distinct crops.

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Seed germination behaviour of Diplotaxis tenuifolia

Cited by 8 publications

References 15 publications

Factors Affecting Growth of Perennial Wall Rocket and Annual Garden Rocket

Factors Affecting Growth of Perennial Wall Rocket and Annual Garden Rocket

Germination and electrical conductivity tests on artificially aged seed lots of 2 wall-rocket species

Fundamental Differences between Perennial Wall Rocket and Annual Garden Rocket Influence the Commercial Year-Round Supply of These Crops

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