Rust-proofing wheat for a changing climate

Chakraborty, Sukumar; Luck, Jo; Hollaway, Grant; Fitzgerald, Glenn J.; White, Neil

doi:10.1007/s10681-010-0324-7

Cited by 54 publications

(36 citation statements)

References 77 publications

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“…Actually, the disease has infected the wheat when it is visually observed. When conditions are wet during the season, the yellow rust spores are dispersed by the wind and can result in rapid disease development higher up the plant; and in neighbouring wheat crops (Chakraborty et al, 2011). Therefore, it is important to monitor and estimate the severity, especially on the early infection of seedlings.…”

Section: Discussionmentioning

confidence: 99%

Hyperspectral Measurements for Estimating Vertical Infection of Yellow Rust on Winter Wheat Plant

Huang¹,

ShuCun²,

Zhao³

et al. 2015

IJAB

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Yellow rust (Puccinia striiformis f. sp. tritici) on winter wheat (Triticum aestivum L.) has resulted in significant reductions in the yield losses and wheat grain quality. It is extremely important to quantitatively detect and assess such a serious disease rather than visual qualitative description. In comparison with traditional diagnosis method, remote sensing has proven to be a cost-effective tool to achieve such a goal. In this study, we used yellow rust in winter wheat to illustrate the capability of estimating the infection index in different leaf layers of the plant using hyperspectral measurements on individual wheat diseased leaves. The analysis results indicated that the severities showed a gradual increasing trend from F-1 (F=Flag leaf) to F-3, while the relative chlorophyll and nitrogen showed an inverse change. The spectral reflectance gradually increased from F-1 to F-3 in the visible and short-wave infrared (SWIR) regions, while it was the very reverse in the near-infrared (NIR) region. In addition, an integral spectral index -yellow rust spectral index (YRSI) was constructed to quantitatively estimate the disease using the most sensitive bands in the visible (704 nm), NIR (1423 nm) and SWIR (1926 nm) regions. The coefficient of determination (R 2 ) reaches 0.88 between the disease severity (DS%) and YRSI, which shows that the index can be suitable and effective to estimate the infection severity for a wheat plant.

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Section: Discussionmentioning

confidence: 99%

Hyperspectral Measurements for Estimating Vertical Infection of Yellow Rust on Winter Wheat Plant

Huang¹,

ShuCun²,

Zhao³

et al. 2015

IJAB

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“…The incidence of other diseases in trees was also reduced at EC, e.g. Phyllosticta minima in Acer (McElrone et al 2005), nor was any change reported in the uredospore production per unit lesion area or in the disease progress of Puccinia striiformis (stripe rust) in FACE experiments (preliminary results, Chakraborty et al 2010).…”

Section: Discussionmentioning

confidence: 94%

Response of wheat fungal diseases to elevated atmospheric CO₂level

Bencze¹,

Vida²,

Balla³

et al. 2013

Cereal Research Communications

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Infection with fungal pathogens on wheat varieties with different levels of resistance was tested at ambient (NC, 390 ppm) and elevated (EC, 750 ppm) atmospheric CO 2 levels in the phytotron. EC was found to affect many aspects of the plant-pathogen interaction. Infection with most fungal diseases was usually found to be promoted by elevated CO 2 level in susceptible varieties. Powdery mildew, leaf rust and stem rust produced more severe symptoms on plants of susceptible varieties, while resistant varieties were not infected even at EC. The penetration of Fusarium head blight (FHB) into the spike was delayed by EC in Mv Mambo, while it was unaffected in Mv Regiment and stimulated in Mv Emma. EC increased the propagation of FHB in Mv Mambo and Mv Emma. Enhanced resistance to the spread of Fusarium within the plant was only found in Mv Regiment, which has good resistance to penetration but poor resistance to the spread of FHB at NC. FHB infection was more severe at EC in two varieties, while the plants of Mv Regiment, which has the best field resistance at NC, did not exhibit a higher infection level at EC.The above results suggest that breeding for new resistant varieties will remain a useful means of preventing more severe infection in a future with higher atmospheric CO 2 levels.

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“…Secondly, it may be due to repetition every year in the study area. Therefore, it becomes more vulnerable to fungi (Chakraborty et al, 2011).…”

Section: Management Strategiesmentioning

confidence: 99%

Assessment of Wheat Foliar Mycofloraand Its Management Strategies in District Bhimber, Azad Kashmir, Pakistan

Tanveer¹

2016

Appl Ecol Env Res

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Abstract. In this research, an analysis of wheat foliar mycoflora was explored with detection of 21 foliar fungal species from eight cultivated varieties in the wheat fields of District Bhimber of Azad Kashmir, Pakistan. Out of 21 species, 19 were isolated from three wheat varieties viz: V1 (Fareed-2006), V3 (Lasani-2008 and V6 (Aas 2011). Wheat variety V8 (Galaxy-2013) showed less number (28.5%) of fungal species invasion. Mycosphaerella graminicola was present ubiquitously on all eight wheat varieties with 100% prevalence while Cephalosporium gramineum was only found on three wheat varieties with 37.5%. The minimum occurrence was shown by fungus Nigrospora sphaerica (15%). In sub-division Samahni, wheat variety Fareed-2006 (V1) depicted the highest disease susceptibility with incidence of 63.3%. The variety Galaxy-2013 was found the best crop in Samahni having least incidence value of 22.3%. In sub-division Bhimber, wheat variety Seher-2006 was the most affected by mycoflora having highest disease incidence (60.0%) while least infection was measured in Galaxy-2013 (20.9%), being appropriate varietal crop for the area. In Barnala sub-division, Fareed-2006 indicated highest disease incidence (59.7%) while minimum disease incidence was measured in Galaxy-2013 (29.7%). As general conclusion Galaxy-2013 was proved as the best crop variety in the study area being nonth or least infected by fungal taxa. In second aspect of experiment comprising of optimization of management and control strategies, the parameter of grain yield was measured. As a general without any pre-treatment of seed crop, the variety V8 was the best of with yield of 1543 kg/ha, that might be due to its genetic resistance or better eco-climatic adaptability. Out of applied management strategies; use of fungicides (Quadris and Headline) spray on wheat leaves proved to be better having rise of yield i.e., 1550 kg/ha and 1560 kg/ha, respectively. The other strategy: use of biological products i.e. different plant extracts (Acacia nilotica, Azadirachta indica, Curcuma longa, Eucaylptus citriodora, Ficus bengalensis) spray proved that landmark rise was obtained in yield from variety V8 with 1739 kg/ha as compared to others. This rise was huge (1739 kg/ha ) in comparison to the without treatment crop having 1543 kg/ha yield and it was proved pre-treatment produces better crop than control (blank) sample culminating the result that use of bio-products (plant extracts) are the best for control and management of mycoflora of wheat.

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Rust-proofing wheat for a changing climate

Cited by 54 publications

References 77 publications

Hyperspectral Measurements for Estimating Vertical Infection of Yellow Rust on Winter Wheat Plant

Hyperspectral Measurements for Estimating Vertical Infection of Yellow Rust on Winter Wheat Plant

Response of wheat fungal diseases to elevated atmospheric CO₂level

Assessment of Wheat Foliar Mycofloraand Its Management Strategies in District Bhimber, Azad Kashmir, Pakistan

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Rust-proofing wheat for a changing climate

Cited by 54 publications

References 77 publications

Hyperspectral Measurements for Estimating Vertical Infection of Yellow Rust on Winter Wheat Plant

Hyperspectral Measurements for Estimating Vertical Infection of Yellow Rust on Winter Wheat Plant

Response of wheat fungal diseases to elevated atmospheric CO2level

Assessment of Wheat Foliar Mycofloraand Its Management Strategies in District Bhimber, Azad Kashmir, Pakistan

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Product

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Response of wheat fungal diseases to elevated atmospheric CO₂level