Citrus: Citrus is the common term for the fruits of the genus Citrus of family Rutaceae. They are native to Australia and now cultivated all over the world in cooler climates. Common examples of fruits from Citrus are oranges, lemons, grapefruits, limes etc. Citrus Canker Ø Citrus canker is a […]
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Blast Disease of Rice: Symptoms and Control Measures
Blast Disease of Rice : Rice is a cereal grain. It is the seeds of Oryza sativa (Asian rice) or Oryza glaberrima (African rice). Rice is the most extensively consumed staple food of human. It is the major staple food in Asia. Rice is the third highest agricultural commodity in […]
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Mosaic Disease of Tapioca: Symptoms and Control Measures
Cassava or Tapioca* Ø Cassava or Tapioca (Botanical Name: Manihot esculenta; Family: Euphorbiaceae). Ø Cassava is a vegetatively propagated tuber crop plant. Ø The root tubers of tapioca are rich in starch. Ø Cassava is native to South America. Now the cassava is cultivated worldwide. Ø Cassava is a staple […]
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Pteridospermales (Cycadofilicales) Characters, Classification and Affinities
Cycadofilicales / Pteridospermales Ø Pteridospermales are a group of Fossil Gymnosperms. Ø They are also called as Cycadofilicales (Chamberlain used the term). Ø As the name suggests, they are the ‘Seed Ferns’. Ø They are Gymnosperms with ‘Fern-like’ leaves which produce ‘Seeds’. The Reconstruction of a Pteridospermales Member. Note the […]
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Difference between Pteridophytes and Gymnosperms
Pteridophytes vs Gymnosperms Pteridophytes Pteridophytes are a group of primitive land plants belongs to Cryptogams. They are the first plant group with vascular tissue for the conduction of water and food materials and hence they are called as Vascular Cryptogams. Gymnosperms Gymnosperms are a group of primitive seed-producing plants of […]
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