Influence of harvest date and light integral on the development of strawberry flavour compounds

Watson, R.; Wright, Charles J.; McBurney, T.; Taylor, Andy; Linforth, Robert

doi:10.1093/jxb/erf088

Cited by 121 publications

(80 citation statements)

References 55 publications

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“…The lower concentration of soluble solids in the fruits on black mulch compared with those on white mulch could be explained by higher day temperatures on black mulch, because soluble solids concentration in strawberry fruits has been shown to be sensitive to high temperature (Wang and Camp 2000;Hoppula and Karhu 2006). In addition, because it reflects light more than black mulch, white mulch is likely to increase plant photosynthetic rates which, in turn, would lead to more sugars being available for translocation to berries (Miura et al 1993;Watson et al 2002). This effect of mulches on the important fruit quality trait, namely "sweetness", as a result of high soluble solids content, can be crucial for taste acceptance.…”

Section: Discussionmentioning

confidence: 99%

White mulch and a south facing position favour strawberry growth and quality in high latitude tunnel cultivation

Karhu¹,

Puranen²,

Aflatuni³

2007

Can. J. Plant Sci.

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Karhu, S. T., Puranen, R. and Aflatuni, A. 2007. White mulch and a south facing position favour strawberry growth and quality in high latitude tunnel cultivation. Can. J. Plant Sci. 87: 317-325. Polyethylene mulches with black or white surface were compared in seven strawberry (Fragaria × ananassa Duch.) genotypes in a 2-yr experiment. The plants were covered by an unheated walk-in tunnel at the beginning of the first harvest season. The effects of a south-west versus north-east position of plants within the double-row beds were also studied. Soil temperatures were higher under black mulch, especially mid-day temperatures on the bed surface in the southward position. White mulch favoured root and crown growth in the first year, and the southwest position increased plant growth in both years. With black mulch, lower carbohydrate reserves were observed after transplanting, and a decreased chlorophyll content of leaves was detected in the second year. Mulch colour did not affect yield quantity. The first-year harvest was advanced with black mulch, but in the second year, the harvest season was earliest on the south side of beds with white mulch. Black mulch decreased fruit size in the first year and the concentration of fruit soluble solids in both years. The results suggest that in northern latitudes white mulch improves strawberry plant growth and fruit quality over that obtained using black mulch, but enhanced yield is not to be expected when a double-row tunnel cultivation system is used.Key words: Fragaria × ananassa, mulch, plasticulture, polyethylene, strawberry, tunnel Karhu, S. T., Puranen, R. et Aflatuni, A. 2007. Un paillis blanc et l'exposition au sud favorisent la croissance et la qualité des fraises dans les serres-tunnels à haute latitude. Can. J. Plant Sci. 87: 317-325. Lors d'une expérience qui a duré deux ans, les auteurs ont comparé des paillis de polyéthylène blanc ou noir avec sept génotypes de fraisier (Fragaria × ananassa Duch.). Pour cela, ils ont couvert les plants avec une serre-tunnel de hauteur d'homme au début de la première récolte. Ils ont aussi comparé l'incidence d'une exposition sud-ouest à celle d'une exposition nord-est sur les parcelles à double rang. Le sol est plus chaud sous un paillis noir, surtout en surface, au milieu de la journée, quand la culture est exposée au sud. Le paillis blanc a favorisé la croissance des racines et du collet la première année tandis que l'exposition au sud-ouest a accru la croissance des plants les deux années. Avec le paillis noir, les chercheurs ont remarqué une diminution des réserves d'hydrates de carbone après le repiquage et une baisse de la teneur des feuilles en chlorophylle la deuxième année. La couleur du paillis n'affecte pas le rendement. Le paillis noir a permis une récolte plus hâtive la première année, mais l'année suivante, on a récolté plus tôt les fruits des fraisiers sous paillis blanc exposés au sud. Le paillis noir a réduit le calibre des fruits la première année et la concentration de solides solubles dans le fruit les deux ...

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Section: Discussionmentioning

confidence: 99%

White mulch and a south facing position favour strawberry growth and quality in high latitude tunnel cultivation

Karhu¹,

Puranen²,

Aflatuni³

2007

Can. J. Plant Sci.

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“…In addition, ellagic acid in Rubus species was reported to have anticarcinogenic (Narayanan et al, 1999;Paivarinta et al, 2006), antiprotozoal (Alanis et al, 2003) and antileukaemic effects (Skupien et al, 2006). It has been determined that the quantity of active components in many plants used in traditional medicines is dependent on agronomical and technological factors; for example, the cultivar, the degree of fruit ripening and the extraction process utilized (AdamsPhillips et al, 2004;Bogs et al, 2005;Koundouras et al, 2006;Watson et al, 2002). The objective of the present study was to compare the antiinflammatory effects of Rubus coreanus during the maturation of fruits.…”

Section: Introductionmentioning

confidence: 99%

Antiinflammatory activities of Rubus coreanus depend on the degree of fruit ripening

Yang

Lim

et al. 2007

Phytotherapy Research

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The dried unripe fruit of Rubus coreanus, which is well-known in Korea and referred to as 'Bok-bun-ja', has been employed as a traditional medicine for centuries. This crude drug is utilized in Korea for the management of impotence, spermatorrhea, enuresis, asthma and allergic diseases. The principal objective of the present study was to conduct a comparison of the antiinflammatory effects of ethanol extracts of the unripe (URCE), half-ripened (HRCE) and ripe fruits (RCE) of Rubus coreanus. URCE and HRCE were found to reduce the production of nitric oxide (NO) and prostaglandin E 2 (PGE 2 ) as well as pro-inflammatory cytokines, in lipopolysaccharide (LPS)-stimulated RAW264.7 murine macrophages. However, RCE exerted no inhibitory effects against the production of NO and IL-6. The results of the study show that the degree of fruit ripening of Rubus coreanus affects the production of inflammatory mediators such as NO, PGE 2 and inflammatory cytokines.

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“…The cultivar Camarosa showed less fluctuation in total fruit sugar content during winter and summer months. Preharvest factors such as average temperature and relative humidity, along with available heat and light intensity, are also important factors in determining the sugar level and its composition in developing fruits [13,18].…”

Section: Total Sugarsmentioning

confidence: 99%

Cultivars and sequential harvesting influence physiological and functional quality of strawberry fruits

Kannaujia

Asrey

Bhatia

et al. 2014

Fruits

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-Introduction. Strawberry is basically a temperate fruit, but, due to its short production cycle (100-120 days), it has now become the fastest growing crop in the tropical and sub-tropical regions of the Asian nations. In India, farmers of northern plain regions transplant the strawberries before the onset of the winter and keep on harvesting until early summer. Not much is known about the impact of the harvesting season (winter and summer) on the accumulation of health-promoting substances or on quality traits. Considering the existing research gaps and practical utility, the present study was undertaken. Materials and methods. Four varieties were grown on raised beds with black polythene mulch, and a drip and fertigation system. Fruits were harvested at the ¾ colour (scarlet) development stage and observations were recorded on different physiological and functional attributes consecutively during three harvesting months. Results and discussion. Our results indicated that both cultivars and harvesting months affected the physiology and functional quality of strawberry fruit. Anthocyanin, ascorbic acid and total antioxidants were found to be higher during March. Ascorbic acid content registered ≈ 50% reduction during advance summer harvesting (April). Among the tested varieties, Camarosa gave better results during all three harvesting months in terms of desirable quality traits. Conclusion. Our findings show that there are some varieties such as Camarosa which have the potential to produce functionally superior fruits over other cultivars even during early summer. The information presented may be helpful in selection of suitable cultivars, and postharvest handling and processing measures for strawberry fruits harvested during different months.India / Fragaria ananassa / fruits / quality / harvesting date / respiration / health foods Le cultivar et la date de récolte influencent la qualité physiologique et fonctionnelle de la fraise.Résumé -Introduction. La fraise est fondamentalement un fruit tempéré, mais, du fait de son court cycle de production (100 à 120 jours), elle est maintenant devenue la production à croissance la plus rapide dans les régions tropicales et subtropicales des pays asiatiques. En Inde, les agriculteurs de la région des plaines du nord transplantent les fraisiers avant le début de l'hiver et continuent à récolter jusqu'au début de l'été. L'incidence de la saison de récolte (hiver ou été) sur l'accumulation de substances favorables à la santé ou sur certains critères de qualité est peu connue. Notre étude a été entreprise du fait des lacunes existantes de la recherche dans ce domaine et de l'utilité pratique de ce paramètre. Matériel et méthodes. Quatre variétés ont été cultivées sur les rangs couverts d'un paillis de polythène noir et munis d'un système de goutte-à-goutte avec fertigation. Les fruits ont été récoltés au stade de ¾ mûr (écarlate) et des observations ont été effectuées sur différents caractéristiques physiologiques et fonctionnelles pendant trois mois de récolte succ...

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Influence of harvest date and light integral on the development of strawberry flavour compounds

Cited by 121 publications

References 55 publications

White mulch and a south facing position favour strawberry growth and quality in high latitude tunnel cultivation

White mulch and a south facing position favour strawberry growth and quality in high latitude tunnel cultivation

Antiinflammatory activities of Rubus coreanus depend on the degree of fruit ripening

Cultivars and sequential harvesting influence physiological and functional quality of strawberry fruits

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