Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Polygenic Traits01:18

Polygenic Traits

69.0K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
69.0K
Trait and State Self-Esteem02:08

Trait and State Self-Esteem

11.5K
The term self-esteem is often used generically, to refer to how people feel about themselves. However, according to research, there are three distinct constructs that should not be used interchangeably (Brown & Marshall, 2006). 
11.5K
Multiple Allele Traits01:49

Multiple Allele Traits

38.0K
The Concept of Multiple Allelism
38.0K
Traits and States01:17

Traits and States

542
Personality traits represent consistent patterns in behavior, thoughts, and emotions, reflecting an individual's tendencies across various situations. For example, extraversion, a well-known trait, manifests in individuals as talkative, energetic, and enthusiastic behaviors. These traits are stable over time, offering a reliable framework for predicting how people might act in different contexts. However, they do not define every moment of an individual's life. In contrast to traits,...
542
X-linked Traits01:19

X-linked Traits

58.3K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
58.3K
Locus of Control01:26

Locus of Control

214
Locus of control describes how individuals perceive the causes of events in their lives, influencing motivation and well-being. Introduced by Julian Rotter in 1954, it is categorized into internal and external locus of control.Internal Locus of ControlIndividuals with an internal locus of control believe their actions determine outcomes, fostering responsibility, self-efficacy, and motivation. For example, an employee may attribute career success to hard work. Research links this mindset to...
214

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Periprocedural 24-Hour Change in Renalase Adds Incremental Value for Early Risk Stratification of Cardiovascular Magnetic Resonance-Defined Microvascular Obstruction in Patients With ST-Segment-Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention: A Prospective Cohort Study.

Journal of the American Heart Association·2026
Same author

Dual-drug-loaded nanohydrogel for intraoperative local application: sequential release-mediated spatiotemporal targeting of diverse secondary injury mechanisms to improve long-term prognosis in traumatic brain injury.

BMC medicine·2026
Same author

NOX4 promotes cardiomyocyte ferroptosis-related injury in septic cardiomyopathy in associated with mitochondrial dysfunction and impaired NRF2 nuclear translocation.

International journal of biological macromolecules·2026
Same author

Palladium-catalyzed migratory allylic sulfonylation of allylic alcohols using sulfonyl hydrazides.

Organic & biomolecular chemistry·2026
Same author

Paradoxical sleep deprivation induces testicular damage and sperm dysfunction in rats: Protective role of recovery sleep and insight from SWE imaging.

Experimental gerontology·2026
Same author

The transcription factor SlDOF9 directly activates SlELP5 expression to regulate inflorescence length in tomato.

Journal of genetics and genomics = Yi chuan xue bao·2026

Related Experiment Video

Updated: Jan 25, 2026

Lateral Root Inducible System in Arabidopsis and Maize
09:23

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

14.4K

krn1, a major quantitative trait locus for kernel row number in maize.

Jian Wang1, Zhelong Lin1, Xuan Zhang1

  • 1National Maize Improvement Center, Center for Crop Functional Genomics and Molecular Breeding, Joint Laboratory for International Cooperation in Crop Molecular Breeding, Ministry of Education, Beijing Key Laboratory of Crop Genetic Improvement, Laboratory of Crop Heterosis and Utilisation, China Agricultural University, Beijing, 100193, China.

The New Phytologist
|May 7, 2019
PubMed
Summary

Scientists identified the krn1 gene, which controls kernel row number in maize (Zea mays). This gene, ids1/Ts6, was under selection during domestication to increase yield and could be key for future maize breeding.

Keywords:
krn1kernel row numberparallel selectionquantitative trait locus (QTL)wheat Q

More Related Videos

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
10:28

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

24.8K
Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
09:21

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Published on: February 15, 2019

11.1K

Related Experiment Videos

Last Updated: Jan 25, 2026

Lateral Root Inducible System in Arabidopsis and Maize
09:23

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

14.4K
Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
10:28

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

24.8K
Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
09:21

Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.

Published on: February 15, 2019

11.1K

Area of Science:

  • Plant genetics
  • Crop science
  • Molecular biology

Background:

  • Kernel row number is a key trait for maize (Zea mays) yield, significantly enhanced during domestication from teosinte.
  • Despite its importance, the genetic mechanisms controlling kernel row number are largely unknown, with many quantitative trait loci (QTLs) remaining uncharacterized.

Purpose of the Study:

  • To identify the major QTL responsible for kernel row number in maize.
  • To elucidate the molecular genetic mechanisms underlying kernel row number determination and its role in maize domestication.

Main Methods:

  • Combined map-based cloning and association mapping to identify the krn1 QTL.
  • Analyzed nucleotide diversity and gene expression (RNA-seq) of candidate genes.
  • Investigated the function of ids1/Ts6 in maize mutants.

Main Results:

  • Identified a major QTL for kernel row number, krn1, likely corresponding to the ids1/Ts6 gene, which encodes an AP2 domain protein.
  • Increased expression of ids1/Ts6 in mutants enhanced spikelet pair meristem numbers and kernel row number.
  • Found evidence of parallel selection on ids1/Ts6 in maize and its homolog Q in wheat, linked to yield improvement during domestication.
  • ids1/Ts6 is involved in multiple pathways regulating spikelet pair meristem development, interacting with genes like fea3, fea4, and ra3.

Conclusions:

  • The krn1 gene (ids1/Ts6) plays a crucial role in determining maize kernel row number and was a target of selection for yield enhancement during domestication.
  • Understanding ids1/Ts6 function provides a new avenue for improving maize yield through targeted breeding strategies.