| kernel blight | <microbiology, plant biology> Any of a group of fungal diseases of barley which cause withering and discolouration of the grain, Gibberella zeae, Helminthosporiumsativum and Alternaria are typically the culprits. (09 Oct 1997) |
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| apricot kernel oil | See: persic oil. (05 Mar 2000) |
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| 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. <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. Source: Websters Dictionary (01 Mar 1998) |
| peach kernel oil | See: persic oil. (05 Mar 2000) |
| chestnut blight | A disease of chestnut trees caused by the fungus Enqothia parasitica. The major symptom is swollen, cracked cankers that form on the outside of the tree, spread into the tree and kills it. This disease is the primary reason why there are almost no American chestnut trees alive today. The population was decimated when the disease was introduced to America with Japanese chestnut trees. (09 Oct 1997) |
| halo blight | Halo blight is a fatal plant disease which attacks legumes and is caused by the bacteria Pseumonas phaseolicola. The plant develops yellow-ringed, water-soaked spots, then withers and dies without rotting. (09 Oct 1997) |
| kernel | 1. The essential part of a seed; all that is within the seed walls; the edible substance contained in the shell of a nut; hence, anything included in a shell, husk, or integument; as, the kernel of a nut. 2. A single seed or grain; as, a kernel of corn. 3. A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh. 4. The central, substantial or essential part of anything; the gist; the core; as, the kernel of an argument. Origin: OE. Kernel, kirnel, curnel, AS.cyrnel, fr. Corn grain. See Corn, and cf. Kern to harden. Source: Websters Dictionary (01 Mar 1998) |
| kernel spot | <microbiology, plant biology> A fungal disease of pecans that causes irregular brown spots on the nuts, it is caused by Coniothyrum caryogenum. (09 Oct 1997) |
| leaf blight | Any of various diseases which lead to the browning and dropping of a plant's leaves. (09 Oct 1997) |