Sentences with phrase «infect plant stems»

Stem rust, named for the blackening pustules that infect plant stems, caused devastating crop epidemics and famine for centuries before being tamed by fungicides and resistance genes.

Not exact matches

Cuscuta reflexa is a parasitic, leafless vine that infects the stems of most dicotyledonous plants - one exception is Solanum lycopersicum, a species of tomato.

In 1944 Borlaug, trained as a plant pathologist, left the U.S. for Mexico to fight stem rust, a fungus that infects wheat, at the invitation of the Rockefeller Foundation, among others.

Dark red postules appear on both sides of the leaves and stems of the infected plant.

It attacks different parts of the plant: the collar, which can ultimately kill the entire leaf blade; the stem, which turns blackish and breaks easily (node blast); the neck of the panicle, where the infected part is girdled by a grayish brown lesion, or when severe, causes the panicles to fall over; or on the branches of the panicles which exhibit brown lesions when infected.