het·er·o·sis

(hĕt′ə-rō′sĭs)

[Late Greek heterōsis, alteration, alteration of Greek heteroiōsis, from heteroioun, to alter, from heteroios, different in kind, from heteros, other; see hetero-.]

het′er·ot′ic (-rŏt′ĭk) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

heterosis

(ˌhɛtəˈrəʊsɪs)

(Biology) biology another name for hybrid vigour

[C19: from Late Greek: alteration, from Greek heteroioun to alter, from heteros other, different]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

het•er•o•sis

(ˌhɛt əˈroʊ sɪs)

n.

the increase in growth, size, yield, or other characters in hybrids over those of the parents.

[1910–15; < Late Greek hetérōsis an alteration. See hetero-, -osis]

heterosis

abnormal development, especially increased size, in plants or animals, usually as a result of cross-breeding.

See also: Size

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

heterosis - (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent

hybrid vigor

tendency, inclination - a characteristic likelihood of or natural disposition toward a certain condition or character or effect; "the alkaline inclination of the local waters"; "fabric with a tendency to shrink"

genetic science, genetics - the branch of biology that studies heredity and variation in organisms

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References in periodicals archive

Crossbreeding, Dairy cattle, Heat stress, Physiological responses, Heterosis.

Crossbred Dairy Cattle is the Answer to Improve Environment Dependent Productive and Physiological Responses - A Review

In Cross A, 1000-seed weight revealed heterosis while in Cross B plant characters like 1000-seed weight, flag leaf area, harvest index and spike length showed heterosis (Mohamed 2014; Alla 2014).

GENE ACTION APPRAISAL FOR SEED YIELD AND RELATED TRAITS IN BREAD WHEAT

Hence, the basic goal of sunflower breeding is the utilization of heterosis obtained by crossing potential lines and testers (Xu et al., 2012).

General and Specific Combining Ability Estimates for Morphological, Yield and its Attributes and Seed Traits in Sunflower (Helianthus annuus L.)

The objectives of this study were to estimate combining ability and heterosis of pearl millet inbred lines for downy mildew, yield, and other agronomic traits under downy mildew infested fields and identify superior pearl millet hybrids for yield, yield components, and resistance to downy mildew.

Estimates of Combining Ability and Heterosis for Yield and Its Related Traits in Pearl Millet Inbred Lines under Downy Mildew Prevalent Areas of Senegal

Heterosis from crossbreeding may result in attaining both high meat quality and growth performance of the animals.

Comparison of growth performance of Berkshire purebreds and crossbreds sired by Hereford and Tamworth breeds raised in alternative production system

Quantitatively, heterosis is measured by the difference between the value obtained in generation Ft and the mean value of the parents, being maximum in generation [F.sub.1] In diploid species, heterozygosis is expected to be reduced to half every self-fertilization generation due to endogamy (WRIGHT, 1950).

Predominant trait inheritance in wheat with multivariate approach/Heranca predominante de caracteres em trigo com enfoque multivariado

Heterosis, or hybrid vigor, refers to the superior performance of hybrids relative to their parents.

Detection of QTLs for Yield Heterosis in Rice Using a RIL Population and Its Testcross Population