نتایج جستجو برای: grapevine products

تعداد نتایج: 295629  

2015
Arturo Aquino Borja Millán Daniel Gaston María-Paz Diago Javier Tardáguila

Grapevine flowering and fruit set greatly determine crop yield. This paper presents a new smartphone application for automatically counting, non-invasively and directly in the vineyard, the flower number in grapevine inflorescence photos by implementing artificial vision techniques. The application, called vitisFlower(®), firstly guides the user to appropriately take an inflorescence photo usin...

2014
Akira Kawaguchi

A nonpathogenic strain of Rhizobium (=Agrobacterium) vitis, ARK-1, limited the development of grapevine crown gall. A co-inoculation with ARK-1 and the tumorigenic strain VAT07-1 at a 1:1 cell ratio resulted in a higher population of ARK-1 than VAT07-1 in shoots without tumors, but a significantly lower population of ARK-1 than VAT07-1 in grapevine shoots with tumors. ARK-1 began to significant...

Journal: :Phytopathology 2015
P Saldarelli A Giampetruzzi M Morelli U Malossini C Pirolo P Bianchedi V Gualandri

The role of Grapevine Pinot gris virus (GPGV) in the etiology of grapevine leaf mottling and deformation was investigated by biological and molecular assays. A survey on different cultivars from the Trentino Region in Italy showed a widespread distribution of GPGV, which was associated with symptomatic (79%) but also with symptomless (21%) vines. Symptomatic and GPGV-infected 'Pinot gris' vines...

2017
Riccardo Aversano Boris Basile Mauro Paolo Buonincontri Francesca Carucci Domenico Carputo Luigi Frusciante Gaetano Di Pasquale

Although domestication of the grapevine (Vitis vinifera L.) has been extensively documented, the history of genotype selection and evolution of vineyard management remain relatively neglected fields of study. The find of 454 waterlogged grapevine pips from a well-dated Etrusco-Roman site in the Chianti district (Tuscany, Central Italy) is an extraordinary chance to gain insights into the progre...

2012
Maria Cristina Palmieri Michele Perazzolli Vittoria Matafora Marco Moretto Angela Bachi Ilaria Pertot

Downy mildew is caused by the oomycete Plasmopara viticola and is one of the most serious diseases of grapevine. The beneficial microorganism Trichoderma harzianum T39 (T39) has previously been shown to induce plant-mediated resistance and to reduce the severity of downy mildew in susceptible grapevines. In order to better understand the cellular processes associated with T39-induced resistance...

2012
Ahmed Ismail Michael Riemann Peter Nick

Salt stress is a major constraint for many crop plants, such as the moderately salt-sensitive economically important fruit crop grapevine. Plants have evolved different strategies for protection against salinity and drought. Jasmonate signalling is a central element of both biotic and abiotic stress responses. To discriminate stress quality, there must be cross-talk with parallel signal chains....

2016
Martina Cappelletti Michele Perazzolli Livio Antonielli Andrea Nesler Esmeralda Torboli Pier L. Bianchedi Massimo Pindo Gerardo Puopolo Ilaria Pertot

Protein derivatives and carbohydrates can stimulate plant growth, increase stress tolerance, and activate plant defense mechanisms. However, these molecules can also act as a nutritional substrate for microbial communities living on the plant phyllosphere and possibly affect their biocontrol activity against pathogens. We investigated the mechanisms of action of a protein derivative (nutrient b...

Journal: :OENO One 2022

Natural extracts, and particularly plant by-product can represent an eco-friendly alternative to synthetic pesticides control crop diseases. We produced extract from a mix of grapevine trunk roots that contain high amount complex stilbenes (grapevine phytoalexins), especially ?- r-viniferins. This conferred protection grapevines against Plasmopara viticola (the causal agent downy mildew) by dis...

2014
Jérôme Pouzoulet Alexandria L. Pivovaroff Louis S. Santiago Philippe E. Rolshausen

This review illuminates key findings in our understanding of grapevine xylem resistance to fungal vascular wilt diseases. Grapevine (Vitis spp.) vascular diseases such as esca, botryosphaeria dieback, and eutypa dieback, are caused by a set of taxonomically unrelated ascomycete fungi. Fungal colonization of the vascular system leads to a decline of the plant host because of a loss of the xylem ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید