citrus is one of the most important fruit crops in iran. among the citriculture areas of iran, mazandaran province has the highest acreage (about 100,000 ha), production and number of varieties nationwide. unauthorized importation of citrus species and cultivars and propagation by growers and nurserymen have led to perpetuation and spread of virus, viroid and other graft-transmissible pathogens...

The elaboration and definition of “metabolic fingerprints” can subsidize both the identification determination plant varieties, as well increase in knowledge about responses adaptations plants to external and/or internal factors. lemon tree (Citrus limon Burm.) is one most important crops Spanish southeast often consumed around world. Although study characterization its fruits are common due ec...

Rootstock is widely used for the cultivation of citrus fruits because it brings resistance or tolerance to diseases environmental constrains and modulates fruit quality. Polyploidization a widespread improvement strategy in citrus. The objective was evaluate effect rootstock ploidy level on composition essential oils. Two trials were conducted, one displaying ‘Navelina’ orange grafted three roo...

The cultivar and rootstock effect on iron chlorosis were studied. The results revealed significant differences among peach cultivars and rootstocks in mineral content. Seasonal changes were also found in the macroand micronutrient content of leaves of peach cultivars and rootstocks. The rootstock St. Julien 655/2 was found to be efficient in K, P, Zn, Fe, Cu absorption and better than seedling ...

ABSTRACT Phytophthora nicotianae and P. palmivora infect and cause rot of fibrous roots of susceptible and tolerant citrus rootstocks in Florida orchards. The infection and colonization by the two Phytophthora spp. of a susceptible citrus host, sour orange (Citrus aurantium), and a tolerant host, trifoliate orange (Poncirus trifoliata), were compared using light and electron microscopy. Penetra...

The rise in the productivity of sweet orange Brazil has been related to use superior rootstocks and higher tree density, among other factors. In order investigate whether cropping system land efficiency would benefit from more intensive cultivation, performance Valencia was evaluated over nine years on four rootstocks, which induced contrasting vigor, at 513, 696 1000 trees·ha?1. Agronomic Inst...

The state of São Paulo (SSP) is the first sweet orange growing region in the world. Yet, the SSP citrus industry has been, and still is, under constant attack from various diseases. In the 1940s, tristeza-quick decline (T-QD) was responsible for the death of 9 million trees in SSP. The causal agent was a new virus, citrus tristeza virus (CTV). The virus was efficiently spread by aphid vectors, ...

Over the past decade, citrus production has sharply decreased in Florida because of greening or Huanglongbing (HLB), a disease that reduces fruit yield and quality eventually kills trees. With increased mortality need to resetting trees, demand for healthy trees from nurseries risen drastically last few years. To meet accelerate tree growth, nursery industry should use modern horticultural prac...

This study aimed to evaluate the effect of rootstocks on fruit sugars, organic acids, and carotenoids. The contents of sugars and organic acids in fruits were determined by HPLC. Total acidity (TA), total soluble solids (TSS), and pH value of the juice were also evaluated. Total carotenoids and chlorophylls contents were measured using a spectrophotometer. The content of ethylene in fruits was ...

The aim of this study was to determine total flavonoids and individually flavanone glycosides as well as antioxidant capacity in peel of Satsuma mandarin(Citrus unshiu) on different rootstocks.  On other hand, the purpose of this study was to identify the rootstock that could produce the highest amount of flavonoids.Total flavonoids content was measured using aluminum chloride colorimetric meth...