نتایج جستجو برای: seedling blight

تعداد نتایج: 21694  

2015
R. C. Weaver

a r t i c l e i n f o Similar to circumstances in the field of economics, market fundamentalism dominates urban blight policy spaces in the U.S. despite criticisms of the paradigm. Unlike the unified alternative that ecological economics (EE) provides to conventional economic theory, however, disagreement over the meaning of " blight " has prevented a commonly held pre-analytic vision and polic...

2017
Veiko Lehsten Lars Wiik Asko Hannukkala Erik Andreasson Deliang Chen Tinghai Ou Erland Liljeroth Åsa Lankinen Laura Grenville-Briggs

BACKGROUND Late blight (caused by Phytophthora infestans) is a devastating potato disease that has been found to occur earlier in the season over the last decades in Fennoscandia. Up until now the reasons for this change have not been investigated. Possible explanations for this change are climate alterations, changes in potato production or changes in pathogen biology, such as increased fitnes...

2013
R. Kumar L. Silva

The purpose of this study was to determine the statistical separability of multispectral measurements from corn having varying levels of southern corn leaf blight severity. Multispectral scanner data in twelve spectral channels in the wavelength range 0.4 to 11.7 pm were analyzed for ten selected flightlines of the 1971 Corn Blight Watch Experiment. A total of 168 corn fields having 18,804 samp...

2002
G. C. Eizenga Dale Bumpers

Sheath blight of rice (Oryza sativa L.) is a major rice disease throughout the world including the southern United States. This disease, which is caused by Rhizoctonia solani Kühn (teleomorph: Thanatephorus cucumeris (Frank) Donk), was first reported in 1910 and now occurs throughout temperate and tropical production areas, being most prominent where rice is grown under intense, high-fertility ...

2017
Fan Zhang Zhi-Chao Wu Ming-Ming Wang Michael Dingkuhn Jian-Long Xu Yong-Li Zhou Zhi-Kang Li

Bacterial blight, which is caused by Xanthomonas oryzae pv. oryzae (Xoo), is one of the most devastating rice diseases worldwide. The development and use of disease-resistant cultivars have been the most effective strategy to control bacterial blight. Identifying the genes mediating bacterial blight resistance is a prerequisite for breeding cultivars with broad-spectrum and durable resistance. ...

Journal: :Molecular plant-microbe interactions : MPMI 2009
Simon J Foster Tae-Ho Park Mathieu Pel Gianinna Brigneti Jadwiga Sliwka Luke Jagger Edwin van der Vossen Jonathan D G Jones

Despite the efforts of breeders and the extensive use of fungicide control measures, late blight still remains a major threat to potato cultivation worldwide. The introduction of genetic resistance into cultivated potato is considered a valuable method to achieve durable resistance to late blight. Here, we report the identification and cloning of Rpi-vnt1.1, a previously uncharacterized late-bl...

2017
María F. Álvarez Myrian Angarita María C. Delgado Celsa García José Jiménez-Gomez Christiane Gebhardt Teresa Mosquera

The genetic basis of quantitative disease resistance has been studied in crops for several decades as an alternative to R gene mediated resistance. The most important disease in the potato crop is late blight, caused by the oomycete Phytophthora infestans. Quantitative disease resistance (QDR), as any other quantitative trait in plants, can be genetically mapped to understand the genetic archit...

Journal: :Phytopathology 2015
A Khiutti D M Spooner S H Jansky D A Halterman

Potato late blight, caused by the oomycete phytopathogen Phytophthora infestans, is a devastating disease found in potato-growing regions worldwide. Long-term management strategies to control late blight include the incorporation of host resistance to predominant strains. However, due to rapid genetic changes within pathogen populations, rapid and recurring identification and integration of nov...

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