Stagonospora nodorum blotch (SNB) caused by is a severe disease of wheat (Triticum aestivum) in many areas the world. S. affects both seedling and adult plants causing necrosis leaf glume tissue, inhibiting photosynthetic capabilities, reducing grain yield. The aims this study were to evaluate response 280 doubled haploid (DH) individuals derived from cross between resistant (6HRWSN125) susceptible (WAWHT2074) genotypes, compare quantitative trait loci (QTL) for plant resistance two...

The Australian continent was free from wheat stripe rust caused by Puccinia striiformis f. sp. tritici until exotic incursions occurred in 1979 and 2002. 2002 incursion enabled the identification of a new resistance gene (Yr34) advanced breeding line WAWHT2046. In this study, we developed validated markers closely linked with Yr34, which is located distal region long arm chromosome 5A. Four kompetitive allele-specific polymerase chain reaction (KASP) three sequence-tagged site (STS) derived...

A collection of 253 synthetic hexaploid wheats (SHWs) produced from 192 Aegilops tauschii accessions and 39 elite durum varieties were studied to identify, characterise, evaluate potentially untapped diversity disease resistance in wheat. The diseases for which was sought included cereal cyst nematode (CCN), root lesion (RLN), Stagonospora nodorum blotch (SNB), Septoria tritici (STB), the 3 rusts, leaf rust, stem stripe all important bread wheat worldwide, can severely reduce yield quality....

Stagonospora nodorum blotch (SNB) is a significant disease in some wheat-growing regions of the world. Resistance wheat to complex, whereby genes for seedling, flag leaf, and glume resistance are independent. The aims this study were identify alternative leaf resistance, compare contrast with known quantitative trait loci (QTL) SNB determine potential role host-specific toxins QTL. Novel QTL identified on chromosome 2AS inherited from winter parent ‘P92201D5’ 1BS spring ‘EGA Blanco’....

Resistance to stagonospora nodorum blotch (SNB) in glumes of hexaploid wheat ( Triticum aestivum L.), caused by Phaeosphaeria Stagonospora anamorph) was investigated a recombinant‐inbred (RI) population. The Purdue University winter breeding lines P91193D1 and P92201D5, unrelated parentage but both exhibiting partial SNB resistance, were crossed develop 254 RI single‐seed descent (SSD) from random population F 2 plants, identify quantitative trait loci (QTLs) controlling resistance glumes....

Aims: This study explores the efficacy of sand filtration in treating greywater (GW) collected from a hostel. Methodology: An experimental setup was designed using five connected polyvinyl chloride (PVC) pipes filled with sourced Cauvery River. The GW filtered through columns varying lengths (40 ft, 60 80 and 100 ft), water analyzed for various physio-chemical parameters. Results: results indicate that significantly reduces levels total suspended solids (TSS), electrical conductivity (EC),...

QTL for tan spot resistance were mapped on wheat chromosomes 1A and 2A. Lines developed with alleles at these loci the tsn1 locus chromosome 5B. These lines expressed significantly higher than parent only. Tan (syn. yellow leaf spot) caused by Pyrenophora tritici-repentis is an important foliar disease of in Australia. Few genes have been Australian germplasm only one, known as located 5B, breeding programs. This gene confers insensitivity to fungal effector ToxA. The main aim this study was...

Resistance to latent infection by Diaporthe toxica was examined in resistant and susceptible cultivars breeding lines of Lupinus angustifolius (narrow-leafed lupin or blue lupine). Conidial germination (91 ± 1% at 3 days after inoculation) penetration the cuticle (14 24 5 days) D. were not affected host resistance. After days, relative size number subcuticular coralloid hyphae differed on hosts. On hosts, majority large (>100 μm long 21 days). Resistant hosts had same density (approximately...

Abstract Main conclusion PM3 and PM8 alleles carried by two CIMMYT wheat lines confer powdery mildew resistance in seedlings and/or adult plants. A stage-specific epistatic interaction was observed between . Powdery is an important foliar disease of wheat. Major genes for resistance, which have been widely used breeding programs, are typically effective against only limited numbers virulence the pathogen. The main aim this study to map loci 7HRWSN58 ZWW09-149 from International Maize Wheat...

Possible mechanisms involved in the suppression of take-all fungus (Gaeumannomyces graminis var. tritici) by a sterile red were examined. Studies on effects foliar application thiamine to plants showed reduction thereby indicating that competition for this particular vitamin, required both fungi, could be one antagonism. Treatment with exudate produced solid substrates resulted lysis hyphae fungus. Exudate sterilised wheat seeds was more inhibitory than ryegrass seeds. Fungal inhibition...

Abstract Key message Novel sources of genetic resistance to tan spot in Australia have been discovered using one-step GWAS and genomic prediction models that accounts for additive non-additive variation. Tan is a foliar disease wheat caused by the fungal pathogen Pyrenophora tritici-repentis (Ptr) has reported generate up 50% yield losses under favourable conditions. Although farming management practices are available reduce disease, most economically sustainable approach establishing...

Abstract Cultivar disease resistance ratings to nodorum blotch (caused by Parastagonospora ) provide critical information growers assist with management. However, less has been done in terms of yield losses from diseases under different cultivar scenarios. The purpose this study was characterize and quality loss responses wheat as influenced variety partial resistance, epidemic intensity, environment. trial series includes four site/years Western Australia. Five varieties, Magenta,...

Abstract The virulence of 57 Australian isolates Pyrenophora tritici ‐ repentis (Ptr), a necrotrophic fungal pathogen responsible for the major wheat disease tan spot, was assessed through plant infection assays. Isolates collected from northern, southern, and western wheat‐cropping regions Australia were evaluated against 16 bread cultivars under controlled growth conditions. Following infection, panel displayed varying symptoms ranging tiny necrotic specks to spreading chlorotic lesions....

Six generations of two maize crosses were used for computation generation mean analysis under moisture stressed and non-stressed conditions yield drought related traits. Epistasis was observed all the traits studied in both conditions. The number kernel rows per cob, kernels row, grains grain yield, chlorophyll content anthesis to silking interval depicted duplicate gene action non stress condition crosses. However relative water complementary cross CIL1221×ZL11243 regimes. Although leaf...

Latent infection and tissue colonization by Diaporthe toxica was examined light, scanning, transmission electron microscopy in stems, leaves, petioles of resistant susceptible narrow-leafed lupins (Lupinus angustifolius). Resistance observed during the latent phase disease as an incompatible reaction between host pathogen that appeared to occur after penetration cuticle. Conidia were attached firmly cuticle extracellular substance presumably exuded from conidia. penetrated directly via peg...

Growth and antifungal activity of a sterile red fungus against Gaeumannomyces graminis var. tritici (the take-all fungus) in vitro was greatly influenced by nutritional environmental conditions. The utilization the various carbon nitrogen sources differed considerably at pH 5.5 6.5. Maximum growth occurred when pectin supplied as source both levels. As sources, NH 4 H 2 PO supported maximum 5.5, whereas Ca(NO 3 ) best Pectin strongly enhanced towards did N source. There was, however, little...