Effect of Grafting on Growth, Yield, and Verticillium Wilt of Eggplant

By F. Bletsos, C. Thanassoulopoulos, D. Roupakias. 2003

177 citations recorded by the source corpus.

Eggplant (Solanum melongena L.) seedlings ('Tsakonikiʼ) were grafted by hand on the Verticillium dahliae Kleb. resistant wild species Solanum torvum Sw. (GST) and Solanum sisymbriifolium Lam. (GSS). Grafted and nongrafted eggplants were trans- planted to a fumigated soil with methyl bromide and to infested soil with microsclerotia of V. dahliae. Grafted plants were more vigorous, as measured by plant height, main stem diameter, and root system weight, than the nongrafted 'Tsakonikiʼ. This resulted in an increased early production (GST, 45.5%; GSS, 18.4%) and late production (GST, 69.3%; GSS, 59.2%) as compared to the noninfected controls. The mean yield reduction (over years) in early production caused by the disease, as compared to the controls grown in fumigated soil, was 29.4%, 36.6%, and 77.9% for eggplant grafted on S. torvum, S. sisym- briifolium, and nongrafted plants, respectively. This yield reduction in total production was 6.9%, 20.5%, and 56.8%, respectively. The disease incidence in ungrafted plants was 96% and 100% during early and late harvest periods. In contrast, the disease incidence in grafted plants was signifi cantly lower, averaging 28.1% (GST) and 52.6% (GSS) in early production, and 37.6% and 79.3%, respectively, in late production. Solanum torvum was found more resistant than S. sisymbriifolium, because grafted infected plants developed mild symptoms, as indicated by signifi cantly lower leaf symptom index (average value 1.2 and 2.22) and disease index (average value 1.55 and 3.38), respectively. In conclusion, grafting of eggplant on either wild species had positive effects on growth, production, and verticillium wilt control.

Subfields: Cell Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/cb8a9a96f049499948dd720c18d50dee26363a91

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Citations in the corpus

Eggplant relatives as sources of variation for developing new rootstocks: Effects of grafting on eggplant yield and fruit apparent quality and composition (2011, methodology): “…lycopersicum L.) hybrids (e.g., ‘Energy’, or ‘Kyndia’) as well as tomato S. lycopersicum × S. habrochaites S. Knapp and D.M. Spooner interspecific hybrids (e.g., ‘He Man’, ‘Beaufort’) are also commonly used as rootstocks for eggplant (Bletsos et al., 2003; Miguel et al., 2007; King et al., 2010).”
Interspecific Hybridization between Eggplant and Wild Relatives from Different Genepools (2016, background): “Among these tertiary genepool species, S. torvum and S. sisymbriifolium are of great interest for breeding, given its resistance to multiple diseases (Bletsos et al., 2003; Gousset et al., 2005).”
Grafting for Disease Resistance (2008, background): “…dahliae Paplomatas et al., 2002 Virus complexes CMV, ZYMV, PRSV, WMV-II Wang et al., 2002 Eggplant Verticillium wilt Verticillium dahliae Bletsos et al., 2003 Corky root Pyrenochaeta lycopersici Ioannou, 2001 Root-knot nematodes Meloidogyne spp. Ioannou, 2001 Tomato Bacterial wilt…”
Grafting fruiting vegetables to manage soilborne pathogens, foliar pathogens, arthropods and weeds (2010, unknown): “Mechanisms of grafting benefits in soils infested with Verticillium have been associated with increased root vigor and biomass (Bletsos et al., 2003) and associated increased water and nutrient uptake (Lee, 1994).”