Dictionary » B » Blight

Blight

Blight

1. To affect with blight; to blast; to prevent the growth and fertility of. [This vapor] blasts vegetables, blights corn and fruit, and is sometimes injurious even to man. (Woodward)

2. Hence: to destroy the happiness of; to ruin; to mar essentially; to frustrate; as, to blight one's prospects. Seared in heart and lone and blighted. (Byron)

Origin: Perh. Contr. From as. Blicettan to glitter, fr. The same root as E. Bleak. The meaning to blight comes in that case from to glitter, hence, to be white or pale, grow pale, make pale, bleach. Cf. Bleach, bleak.

1. Mildew; decay; anything nipping or blasting; applied as a general name to various injuries or diseases of plants, causing the whole or a part to wither, whether occasioned by insects, fungi, or atmospheric influences.

2. The act of blighting, or the state of being blighted; a withering or mildewing, or a stoppage of growth in the whole or a part of a plant, etc.

3. That which frustrates one's plans or withers one's hopes; that which impairs or destroys. A blight seemed to have fallen over our fortunes. (Disraeli)

4. (Science: zoology) a downy species of aphis, or plant louse, destructive to fruit trees, infesting both the roots and branches; also applied to several other injurious insects.

5. A rashlike eruption on the human skin.


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Please check my answers.

... syndrome, a change that may occur over one or two generations - was Burbank faster? I suspect that the desired answer is D (it's not C), but blight reistance is an environmental pressure, so D isn't actually right. For number 4, most of the answers reverse the positions, but D (it's not C) ...

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by Darby
Tue Apr 08, 2014 5:16 pm
 
Forum: Evolution
Topic: Please check my answers.
Replies: 1
Views: 1009

Please check my answers.

... more tubers of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato blight that had wiped out the potato crops in Ireland in the mid-1800s. How did Burbank's process in developing this potato compare to the process of ...

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by moondisyko
Fri Apr 04, 2014 9:00 pm
 
Forum: Evolution
Topic: Please check my answers.
Replies: 1
Views: 1009

Re: Koch's postulates or De Barry's

Think you refer to Anton deBary? Not aware he had "postulates" per se - but he did show the fungal etiology for potato blight by using the then-innovative concept of an uninoculated control.

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by JorgeLobo
Tue Apr 10, 2012 10:32 am
 
Forum: Microbiology
Topic: Koch's postulates or De Barry's
Replies: 1
Views: 1861

CULTIVAR RESISTANT FOR LATE BLIGHT OF POTATO

phytophthora infestans is having many races,if we develop an race specific resistant(qualitative/vertical) cultivar ,that may become susceptible for same race in shorter period.so we have to develop a cultivar with quantitative/horizontal resistance ,this resistance is governed by many genes and it...

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by pushi
Fri Oct 07, 2011 8:08 pm
 
Forum: Microbiology
Topic: CULTIVAR RESISTANT FOR LATE BLIGHT OF POTATO
Replies: 0
Views: 1661

Phytophthora infestans

Can anyone tell me the size of spore one is likely to encounter with potato blight? The reason I ask is that I am trying to ascertain if any of the breathable membranes or sheeting (such as high-density polyethylene I think) might have holes small enough to allow ...

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by geordief
Fri May 28, 2010 9:31 am
 
Forum: Microbiology
Topic: Phytophthora infestans
Replies: 4
Views: 2638
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