Watermelon Rootstock/Scion Relationships and the Effects of Fruit-Thinning and Stem-Pruning on Yield and Postharvest Fruit Quality

This study examined the effects of stem-pruning and fruit-thinning on the yield of marketable watermelon fruit (>5 kg) and watermelon quality after four days of postharvest storage at 22 °C (marketing simulation). We examined the fruits from non-grafted and grafted plants (TZ and Nurit rootstocks) for two consecutive years. Grafting increased the number of marketable fruit per m2. The weight of the average marketable fruit was increased by pruning, but was not affected by thinning or by the choice of rootstock. The level of total soluble solids was higher among fruits from Nurit rootstock. Flesh texture was improved by grafting, but was not affected by thinning or pruning. Thinning improved the taste of the fruit significantly better than stem-pruning did. Grafting (both rootstocks) was associated with crispier fruits. The fruits from Nurit-grafted plants tasted best. The combination of grafting + fruit-thinning increased the fruit lycopene content. The highest levels of vitamin C were found among the fruit from Nurit-grafted plants and the pruned + Nurit-grafted plants, in particular. Overall, fruit quality was affected mainly by grafting onto Nurit rootstock in combination with fruit-thinning and less by stem-pruning. However, not all internal and nutritional quality parameters were significantly affected by the grafting + fruit-thinning treatment.

[1]  E. Fallik,et al.  Relationships between Rootstock-Scion Combinations and Growing Regions on Watermelon Fruit Quality , 2019, Agronomy.

[2]  Pradeep Kumar,et al.  Intergeneric grafting for enhanced growth, yield and nutrient acquisition in greenhouse cucumber during winter , 2019, Journal of Environmental Biology.

[3]  F. Şen,et al.  The effectiveness of growth cycles on improving fruit quality for grafted watermelon combinations , 2018, Food Science and Technology.

[4]  E. Aroucha,et al.  Effect of main stem pruning and fruit thinning on the postharvest conservation of melon. , 2018 .

[5]  L. Pugalendhi,et al.  ROLE OF CUCURBITACEOUS ROOTSTOCKS ON VEGETATIVE GROWTH , FRUIT YIELD AND QUALITY OF BITTER GOURD ( MOMORDICA CHARANTIA L . ) SCIONS THROUGH GRAFTING , 2018 .

[6]  Mohammed Wasim Siddiqui,et al.  Training and Pruning for Improved Postharvest Fruit Quality , 2018 .

[7]  N. S. Dias,et al.  Tolerance of melon cultivars to irrigation water salinity , 2017 .

[8]  P. Sivilotti,et al.  Leaf Removal and Cluster Thinning Efficiencies Are Highly Modulated by Environmental Conditions in Cool Climate Viticulture , 2017, American Journal of Enology and Viticulture.

[9]  M. Kyriacou,et al.  Quality and Postharvest Performance of Watermelon Fruit in Response to Grafting on Interspecific Cucurbit Rootstocks , 2015 .

[10]  E. Fallik,et al.  Grafted vegetables – the influence of rootstock and scion on postharvest quality , 2014 .

[11]  D. Berveiller,et al.  13C-labelling of leaf photoassimilates to study the source–sink relationship in two Iranian melon cultivars , 2013 .

[12]  A. Hesami,et al.  Effect of shoot pruning and flower thinning on quality and quantity of semi-determinate tomato (Lycopersicon esculentum Mill.). , 2012 .

[13]  F. Mohamed,et al.  Impact of Grafting on Watermelon Growth, Fruit Yield and Quality , 2012 .

[14]  N. Sarı,et al.  Rootstock potential of Turkish Lagenaria siceraria germplasm for watermelon: plant growth, yield and quality , 2012, Turkish Journal of Agriculture and Forestry.

[15]  F. Martínez,et al.  Relationships between strawberry fruit quality attributes and crop load , 2011 .

[16]  R. Byers,et al.  Flower and Fruit Thinning of Peach and other Prunus , 2010 .

[17]  P. Cecon,et al.  Características de frutos do meloeiro variando número e posição de frutos na planta , 2009 .

[18]  Yun-Chan Huh,et al.  Cucurbit Grafting , 2008 .

[19]  N. Özdemir,et al.  Effect of Grafting on Watermelon Plant Growth, Yield and Quality , 2007 .

[20]  L. Kanyomeka,et al.  INFLUENCE OF PRUNING ON TOMATO PRODUCTION UNDER CONTROLLED ENVIRONMENTS , 2005 .

[21]  K. Walsh,et al.  Source–sink manipulation to increase melon (Cucumis melo L.) fruit biomass and soluble sugar content , 2004 .