Flowering and Fruiting Responses of Strawberry to Growth Hormone and Chilling Grown Under Tunnel Conditions

Ikram, Samia

doi:10.21162/pakjas/16.3682

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…In ratio to cv. Festival, Martínez-Bolaños et al (2008), found similar values to the results of this study, with 8.5 °Brix and Ikram, Qureshi & Khalid (2016), founded 6.56 °Brix. According to conditions of this study, the results show that vernalization treatment in strawberry plants does not affect the content of total soluble solids in the different evaluated genotypes.…”

Section: Total Soluble Solids (Tss)supporting

confidence: 87%

Postharvest quality of strawberry (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier) genotypes according to vernalization

et al. 2018

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Strawberry production in Paraguay is carried out by small producers, using minimal technology and obtaining low productivity, with the need to expand strawberry genotypes and production techniques. The aim of this study was to evaluate fruit quality of strawberry genotypes according to vernalization. A randomized block design with factorial arrangement 14x2 was performed; factors were genotypes and chilling using 15 plants per treatment and three replicates. Plants were kept in cold room at 5°C, with 8 hours of artificial light and 16 of darkness for a period of 25 days. Five fruits were used per treatment and were evaluated as follows: the amount of total soluble solids, titratable acidity and ratio of total soluble solids to titratable acidity, length/diameter ratio, calyx diameter/fruit diameter ratio, peduncle length and mass loss in postharvest. Data obtained were subjected to analysis of variance simple factorial scheme and averages compared by Tukey test at 5% probability. Vernalization of strawberry plants did not affect fruit shape or total soluble solids content, but increased the percentage of citric acid. Length of peduncle and calix extension had achieved an increasing due to vernalization and decreased postharvest loss of fresh mass, but did not affect fruit preservation at 5°C. Festival and Florida Eliane genotypes may be recommended for in natura consumption and Dover and Oso Grande genotypes for industry.Key-words: Citric acid; mass loss; temperature; total soluble solids; titratable acidity. ResumenLa producción de frutilla en Paraguay es realizada por pequeños productores, usando escasa tecnología y obtención de baja productividad, con la necesidad de ampliar los genotipos y la tecnología utilizada. El objetivo de esta investigación fue evaluar la calidad de frutos de genotipos de frutilla en función a la vernalización. El diseño utilizado fue el de bloques completos al azar con arreglo factorial 14x2. Los factores estuvieron constituidos por los genotipos y la vernalización con 15 plantas por tratamiento y tres repeticiones. Las mudas fueron mantenidas en cámara fría a 5°C, con 8 horas luz artificial y 16 de oscuridad por un periodo de 25 días. Se utilizaron cinco frutos por tratamiento y fueron evaluadas la cantidad de sólidos solubles totales, acidez titulable, relación de sólidos solubles totales con acidez titulable, relación longitud/diámetro, relación: diámetro del cáliz/diámetro del fruto, longitud del pedúnculo y pérdida de masa en postcosecha. Los datos obtenidos fueron sometidos a análisis de varianza en esquema factorial simple y las medias comparadas por el test de Tukey al 5% de probabilidad de error. La vernalización de las mudas no afectó la forma de los frutos de frutilla ni el contenido de sólidos solubles totales, pero aumentó el porcentaje de ácido cítrico. Así mismo, aumentaron la longitud del pedúnculo de la planta y la extensión del cáliz del fruto. Por otro lado, la vernalización disminuyó la pérdida postcosecha de masa fresca, pero no afectó la conservación de ...

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Section: Total Soluble Solids (Tss)supporting

confidence: 87%

Postharvest quality of strawberry (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier) genotypes according to vernalization

et al. 2018

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“…The word "stolon" is Latin in origin meaning a shoot, branch or twig springing from roots. The horizontal stems which run above ground level and produce new plants are known as stolons (Ikram and Qureshi, 2016). The cultivated species of strawberry are cultivated in North America and in beginning of 18th century it is originated in Europe.…”

Section: Introductionmentioning

confidence: 99%

Improving Runner Production, Total yield and Postharvest Quality of Strawberry Fruits using Plant Growth Regulators

Abbas¹,

Maqbool²,

Zahid³

et al. 2023

Jammu Kashmir J. Agric.

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In this study, different plant growth regulators were tested to improve runner production, total yield and postharvestquality of strawberry fruits. For this, different concentrations of gibberellic acid (GA3) (50 ppm, 100 ppm), naphthaleneacetic acid (NAA) (40 ppm, 80 ppm) and benzyl adenine (BA) (150 ppm, 300 ppm) were used as foliar sprays along withonly water as control. Experiment was arranged in Randomized Complete Block Design (RCBD) with three replicationsand data collected was analysed and means were compared. Results showed that maximum survival percentage (100.00),number of runners per plant (18.77), number of plantlet on each runner (6.88), leaf area (58.45 cm2), chlorophyll contentof leaves (67.87 g/ml), , average number of flowers per plant (28.98), average number of fruits per plant (26.78), fruityield per plant (309.78 g), weight of fruit (11.57 g) and size of fruit (15.34 mm) were found in strawberry plants whichwere sprayed with GA3 @ 100 ppm. However, maximum number of days to flowering (55.89) and number of days toharvest (85.76) were observed in strawberry plants which were treated with only water (control). Postharvest qualityparameters like total soluble solids (TSS) (13.21 °Brix), titratable acidity (1.24%), vitamin C (39.12 mg/100 g), ashcontent (0.78), total carotenoids (4.92 mg/100 g FW), total anthocyanins (4.05 mg/100 g FW), total flavonoids (9.09mg/100 g FW), total phenolics (9.12 mg gallic acid/100 g) and antioxidant activity (102.91 μg/100 mg FW) were alsorecorded maximum in plants, sprayed with GA3 @ 100 ppm. Based on current findings it can be concluded that GA3 @100 ppm was found the best plants growth regulator for vegetative growth and postharvest quality attributes of strawberryas compared to all the other growth regulators tested.

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“…Oliveira and Scivittaro (2009) found that natural or artificial vernalization increased production levels and the number of fruits produced per plant. Ikram, Qureshi and Khalid (2016) reported that chilling treatment strongly improved quality and yield by increasing fruit size and weight, and the average number of fruits plant -1 .…”

Section: Resultsmentioning

confidence: 99%

Vernalizing Pre-Transplants Improved the Agronomic Characteristics of Strawberry Genotypes Under Tropical Conditions1

2020

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Strawberry plant yields improve if they accumulate a certain number of cold hours, which does not occur naturally under tropical and subtropical climatic conditions. This study evaluated the agronomic characteristics of potted transplants from 14 strawberry genotypes that had been subjected to vernalization treatment prior to planting in the field. The transplants were stored in a cold chamber at 5°C for 576 h. The genotypes used in the experiment were Camino Real, Festival, Florida Eliane, Sweet Charliefp, Sweet Charlie, Dover, IAC Guaraní, Corea, Early Bright, and hybrid clones Dover × Rosalinda1 Dover × Rosalinda4, Dover × Oso Grande, Dover × Esplendida, and Dover × Aichi. The 14 genotypes in the control group received no vernalization treatment. Each experimental unit consisted of 15 plants. A randomized complete blocks experimental design was used with a 14 × 2 factorial arrangement and three repetitions. Subjecting the strawberry transplants to the vernalization treatment had a significant effect on the total number of fruits per plant and total and commercial yield of fruits per plant, but there was no significant interaction between the factors and the evaluated yield and growth characteristics. Dover × Oso Grande, Florida Eliane, Camino Real, and Festival produced the greatest numbers of large fruits per plant. Vernalizing strawberry transplants increased the yield and the number of medium and small sized fruits per plant. The results showed that vernalization is a technique that could be used in tropical climate conditions to improve strawberry cultivation productivity.

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Flowering and Fruiting Responses of Strawberry to Growth Hormone and Chilling Grown Under Tunnel Conditions

Cited by 6 publications

References 25 publications

Postharvest quality of strawberry (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier) genotypes according to vernalization

Postharvest quality of strawberry (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier) genotypes according to vernalization

Improving Runner Production, Total yield and Postharvest Quality of Strawberry Fruits using Plant Growth Regulators

Vernalizing Pre-Transplants Improved the Agronomic Characteristics of Strawberry Genotypes Under Tropical Conditions1

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