Medindia
Advertisement

Hybrid Vigor Gene to Generate Higher Crop Yeild

by Dr. Enozia Vakil on December 27, 2013 at 10:41 PM

 Hybrid Vigor Gene to Generate Higher Crop Yeild
Without sacrificing the bushy plant shape, scientists will now produce more tomato fruits.

The study by CSHL researchers has revealed one genetic mechanism for hybrid vigor, a property of plant breeding that has been exploited to boost yield since the early 20th century. Teasing out the hidden subtleties of a type of hybrid vigor involving just one gene has provided the scientists with means to tweak the length of time that bushy tomato varieties can produce flowers. In these plants, longer flowering time substantially raises fruit yield.
Advertisement

First identified at CSHL by George Shull in 1908, hybrid vigor - or heterosis, as biologists call it - involves interbreeding genetically distinct plants to generate offspring more robust than either inbred parent.

In his previous work, CSHL Associate Professor Zach Lippman and Israeli colleagues identified a rare example of hybrid vigor involving a genetic defect in the gene that makes florigen, a hormone that controls the process of flowering and flower production.
Advertisement

The mutation dramatically increases tomato yields in bush tomatoes, and Lippman and his team, led by postdoctoral researcher Ke Jiang, set out to understand the mechanism behind this remarkable result.

They found that bushy plants with a mutation in one of the two copies of the florigen gene, producing half as much florigen as plants without the mutation do, postpone the moment when they stop producing flowers.

This, in turn, leads to many more fruits overall. "This is because," Lippman explains, "bushy tomato varieties are highly sensitive to the amount, or dosage, of the florigen hormone, which alters plant architecture - that is, how many flowers can form before growth ends. These discoveries lead to an exciting prediction: that it may be possible to tweak florigen levels to increase yields even further."

Source: ANI
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
News Category
What's New on Medindia
'Hybrid Immunity' may Help Elude COVID-19 Pandemic
Stroop Effect
Plant-Based Diet may Reduce the Risk of COVID-19
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
DNA Finger Printing Weaver Syndrome 

Recommended Reading
GM Tomatoes Help Improve Cholesterol Levels
Genetically modified tomatoes created at UCLA produce 6F peptide that mimics the action of apoA-1, ....
DNA Finger Printing
DNA fingerprinting is a technique which helps forensic scientists and legal experts solve crimes, id...
Weaver Syndrome
Weaver syndrome is a genetic disorder in which children show accelerated bone growth, advanced bone ...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use