Ascospores are a source of inoculum of Phaeosphaeria nodorum, P. avenaria f. sp. avenaria and Mycosphaerella graminicola in Western Australia

2001 ◽  
Vol 30 (4) ◽  
pp. 317 ◽  
Author(s):  
J. A. Bathgate ◽  
R. Loughman
Keyword(s):  
Western Australia ◽  
Mycosphaerella Graminicola ◽  
Phaeosphaeria Nodorum

scholarly journals Health of leaves and ears of spring wheat (Triticum aestivum L.) cultivated after different forecrops

2013 ◽  
Vol 57 (1-2) ◽  
pp. 119-129
Author(s):  
Barbara Majchrzak ◽  
Tomasz P. Kurowski ◽  
Adam Okorski
Keyword(s):  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Mycosphaerella Graminicola ◽  
Camelina Sativa ◽  
Brown Rust ◽  
Leaf Blotch ◽  
Ear Blight ◽  
Phaeosphaeria Nodorum ◽  
False Flax ◽  
Glume Blotch

The research was conduced in the years 2000-2002. The aim of the research was to determinate the health of leaves and ears of spring wheat cultivated after spring cruciferae plants such as: spring oilseed rape (<i>Brassica napus</i> ssp. <i>oleiferus</i> Metz.), chiiiese mustard (<i>Brassica juncea</i> L.), white mustard (<i>Sinapis alba</i> L.), ole iferous radish (<i>Raphanus sativus</i> var. <i>oleiferus</i> L.), false flax (<i>Camelina sativa</i> L.), crambe (<i>Crambe abbysinica</i> Hoechst.), as well as after oat (<i>Avena sativa</i> L.) as con trol. Spring wheat cv. Torka was sown after: pIoughed stubble cultivated on this field, ploughed stubble and straw, ploughed stubble with straw and 30 kg nitrogen per hectare. During all the years of studies on leaves and ears of spring wheat septo ria of leaf blotch and glume blotch (<i>Mycosphaerella graminicola, Phaeosphaeria nodorum</i>) were found. Brown rust (<i>Puccinia recondita</i> f. sp. <i>tritici</i>) was seen on leaves of wheat only during years 2001-2002. Besides on ears fusarium ear blight (Fusarimn sp.) was present in 2002 and sooty mould (<i>Cladosporium sp., Alternaria</i> sp.) in 2001. According to health of overground parts of plants the good forecrops to spring wheat were oat, chinese mustard, oleiferous radish. The biggest impact on presence of diseases of leaves and ears had the weather during years of studies. The use of after harvest rests didn't have significant influence on health of leaves and ears of spring wheat.

scholarly journals Long-term relationships between environment and abundance in wheat of Phaeosphaeria nodorum and Mycosphaerella graminicola

2007 ◽  
Vol 0 (0) ◽  
pp. 071018051611004-??? ◽  
Author(s):  
M. W. Shaw ◽  
S. J. Bearchell ◽  
B. D. L. Fitt ◽  
B. A. Fraaije
Keyword(s):  
Mycosphaerella Graminicola ◽  
Phaeosphaeria Nodorum

СТРУКТУРА И АРЕАЛЫ ПОПУЛЯЦИЙ ФИТОПАТОГЕННЫХ ГРИБОВ

2016 ◽  
Vol 8 (2) ◽  
pp. 216
Author(s):  
М.М. Левитин ◽  
Н.В. Мироненко
Keyword(s):  
Fusarium Oxysporum ◽  
Puccinia Triticina ◽  
Mycosphaerella Graminicola ◽  
Cochliobolus Sativus ◽  
Pyrenophora Teres ◽  
Phaeosphaeria Nodorum

Установление структуры и ареалов популяций фитопатогенных грибов имеет не только научную значимость, но и важное практическое значение для селекции и распределения в агроценозах болезнеустойчивых сортов, повышения эффективности защитных мероприятий, улучшения экологической обстановки на посевах сельскохозяйственных культур. В последнее десятилетие разработан ряд новых подходов в методах анализа популяций. В частности, разработаны новые типы молекулярных маркеров, техника скоростного секвенирования, внедрены новые аналитические программы. Это позволило уточнить структуру и степень локализации ряда популяций фитопатогенных грибов. Некоторые виды фитопатогенных грибов имеют широкий ареал распределения. К ним относятся многие виды ржавчинных грибов, как, например, Puccinia triticina, P. graminis, P. striiformis и некоторые виды гемибиотрофных грибов – Cochliobolus sativus, Mycosphaerella graminicola и Phaeosphaeria nodorum. В частности, показано, что на территории России существуют по меньшей мере 3 популяции P. triticina, различающиеся по вирулентности. Известны виды с узкой локализацией, например, Pyrenophora teres и Fusarium oxysporum. Узколокальное распределение популяций возбудителей болезней требует иного подхода в использовании генов устойчивости, чем для популяций, имеющих широкий ареал.

Persistence of giants: population dynamics of the limpet Scutellastra laticostata on rocky shores in Western Australia

2020 ◽  
Vol 646 ◽  
pp. 79-92
Author(s):  
RE Scheibling ◽  
R Black
Keyword(s):  
Population Dynamics ◽  
Western Australia ◽  
Size Structure ◽  
Survival Rates ◽  
Maximum Size ◽  
High Rate ◽  
Adult Survival ◽  
Rocky Shores ◽  
Adult Size ◽  
Decadal Time Scale

Population dynamics and life history traits of the ‘giant’ limpet Scutellastra laticostata on intertidal limestone platforms at Rottnest Island, Western Australia, were recorded by interannual (January/February) monitoring of limpet density and size structure, and relocation of marked individuals, at 3 locations over periods of 13-16 yr between 1993 and 2020. Limpet densities ranged from 4 to 9 ind. m-2 on wave-swept seaward margins of platforms at 2 locations and on a rocky notch at the landward margin of the platform at a third. Juvenile recruits (25-55 mm shell length) were present each year, usually at low densities (<1 m-2), but localized pulses of recruitment occurred in some years. Annual survival rates of marked limpets varied among sites and cohorts, ranging from 0.42 yr-1 at the notch to 0.79 and 0.87 yr-1 on the platforms. A mass mortality of limpets on the platforms occurred in 2003, likely mediated by thermal stress during daytime low tides, coincident with high air temperatures and calm seas. Juveniles grew rapidly to adult size within 2 yr. Asymptotic size (L∞, von Bertalanffy growth model) ranged from 89 to 97 mm, and maximum size from 100 to 113 mm, on platforms. Growth rate and maximum size were lower on the notch. Our empirical observations and simulation models suggest that these populations are relatively stable on a decadal time scale. The frequency and magnitude of recruitment pulses and high rate of adult survival provide considerable inertia, enabling persistence of these populations in the face of sporadic climatic extremes.

Antipodean Aftershocks: Group Settlement of Hebridean and non-Hebridean Britons in Western Australia following World War One

2020 ◽  
Vol 11 (2) ◽  
pp. 188-203
Author(s):  
Roy Jones ◽  
Tod Jones
Keyword(s):  
New Zealand ◽  
British Empire ◽  
Western Australia ◽  
The Sun ◽  
World War ◽  
World War One ◽  
A Site

In the speech in which the phrase ‘land fit for heroes’ was coined, Lloyd George proclaimed ‘(l)et us make victory the motive power to link the old land up in such measure that it will be nearer the sunshine than ever before … it will lift those who have been living in the dark places to a plateau where they will get the rays of the sun’. This speech conflated the issues of the ‘debt of honour’ and the provision of land to those who had served. These ideals had ramifications throughout the British Empire. Here we proffer two Antipodean examples: the national Soldier Settlement Scheme in New Zealand and the Imperial Group Settlement of British migrants in Western Australia and, specifically, the fate and the legacy of a Group of Gaelic speaking Outer Hebrideans who relocated to a site which is now in the outer fringes of metropolitan Perth.

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