Effect of plant architecture on levels of Helminthosporium sativum infection on spring wheat grown in Zambia

Brandle, J. E.; Namwila, J.C.P.; Little, R.

doi:10.1016/0261-2194(87)90003-2

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…In Zambia, Raemaekers (1988) found a significant correlation between spot blotch severity on flag leaf, head blight and black point. Similarly, Brandle et al . (1987 ) confirmed the effect of plant architecture on levels of spot blotch infection.…”

Section: Discussionmentioning

confidence: 66%

“…Nonetheless, the high variability of disease scores observed in fields attacked by B. sorokiniana should be emphasized, and genetic studies are needed to determine whether distinct resistance mechanisms are associated with resistance to black point, spot blotch or root rot. Disease levels can be heavily affected by environmental conditions ( Nema & Joshi, 1973), and escape mechanisms make selection of genetically resistant materials difficult, particularly in segregating populations ( Raemaekers, 1985; Brandle et al ., 1987 ). In Zambia, Raemaekers (1988) found a significant correlation between spot blotch severity on flag leaf, head blight and black point.…”

Section: Discussionmentioning

confidence: 99%

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Pathogenicity of Bipolaris sorokiniana isolates from wheat roots, leaves and grains in Mexico

Duveiller¹,

Altamirano²

2000

Plant Pathology

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Pathogenicity of 27 Bipolaris sorokiniana isolates from roots, leaves and grains of spring wheat, collected at a site in Mexico, showed no clear differences between groups of isolates, based on lesion density after seedling inoculation of the susceptible cultivar Ciano T-79 under controlled conditions. Results were variable when tests were repeated over time or in experiments using a smaller number of isolates. The lesion number per leaf was significantly different depending on the isolate used for inoculation, irrespective of the plant part group. No difference was found between individual isolates when pathogenicity was assessed using a disease severity scale. No cultivar-isolate interaction was observed for lesion density when 12 isolates were tested on six cultivars, but there were some significant differences between cultivars and between isolates. Results obtained confirmed that infection by B. sorokiniana is highly variable, and very sensitive to environmental conditions. In this study no physiological specialization was observed. The fungus appeared as a continuum of isolates differing in aggressiveness. This work was conducted with isolates from a single site, and highlights the need to assess carefully the biological significance of any differences observed among B. sorokiniana isolates.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Pathogenicity of Bipolaris sorokiniana isolates from wheat roots, leaves and grains in Mexico

Duveiller¹,

Altamirano²

2000

Plant Pathology

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show abstract

“…Spot blotch resistance, plant height and days to 50% heading are the important agronomic traits to develop a plant type suitable for barley growing region [30]. Bipolaris sorokiniana is a weak parasite [31], first colonizes older leaves close to the ground or stressed tissues and progress from lower to upper leaves [32].…”

Section: Discussionmentioning

confidence: 99%

RELATIONSHIP OF AGRO-PHENOLOGICAL TRAITS WITH RESISTANCE TO SPOT BLOTCH IN BARLEY (Hordeum vulgare L)

Singh¹,

Mishra²,

Chand³

et al. 2018

IJG

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Estimated crop losses due to pathogens, animal pests and weeds

Oerke¹

1999

Crop Production and Crop Protection

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Effect of plant architecture on levels of Helminthosporium sativum infection on spring wheat grown in Zambia

Cited by 5 publications

References 3 publications

Pathogenicity of Bipolaris sorokiniana isolates from wheat roots, leaves and grains in Mexico

Pathogenicity of Bipolaris sorokiniana isolates from wheat roots, leaves and grains in Mexico

RELATIONSHIP OF AGRO-PHENOLOGICAL TRAITS WITH RESISTANCE TO SPOT BLOTCH IN BARLEY (Hordeum vulgare L)

Estimated crop losses due to pathogens, animal pests and weeds

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