Induction of male and female sterility in isabgol (Plantago ovata) due to floral infection of downy mildew (Peronospora plantaginis)
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Title |
Induction of male and female sterility in isabgol (Plantago ovata) due to floral infection of downy mildew (Peronospora plantaginis)
Not Available |
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Creator |
K. Mandal
P.R. Patel S. Maiti I.L. Kothari |
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Subject |
floral biology
histology pollen viability fluorescence microscopy medicinal plant |
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Description |
Not Available
Downy mildew (Peronospora plantaginis) caused two different types of infection in the floral parts of isabgol (Plantago ovata). Systemic infection resulted in long spikes bearing weak and sterile florets, which later turned black due to saprophytic growth. Localised infection produced various symptoms ranging between normal flower opening and failure to bloom. Different parts of infected flowers such as sepal, petal, filament and anther were reduced in size compared to healthy flowers. However, gynoecium was elongated in localised infection. P. plantaginis induced gradual sterility of isabgol flowers. Androecium was affected more than the gynoecium was. Pollen number, pollen viability and germination reduced drastically due to localised infection. On the contrary, there were no significant differences between healthy and locally infected flowers in terms of stigma receptivity. In systemically infected spikes, bud development was arrested leading to sterility. When localised disease severity was high, secondary systemic infection caused similar symptoms. Microscopic observations showed presence of the pathogen in different parts of the flowers. Downy mildew adversely affected seed yield and quality; producing seeds, which were smaller and lighter than the healthy ones and later, became black. Seed yield was reduced by as much as 73.45 percent. Husk content per unit seed mass increased relatively as the total surface area of infected seeds increased. Not Available |
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Date |
2020-08-01T02:42:02Z
2020-08-01T02:42:02Z 2010-01-05 |
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Type |
Research Paper
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Identifier |
Mandal, K., Patel, P. R., Maiti, S. and Kothari, I. L. 2010. Induction of male and female sterility in isabgol (Plantago ovata) due to floral infection of downy mildew (Peronospora plantaginis). Biologia 65: 17-22
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/38725 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Not Available
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