Carrarant reduces the amount of methane that warms the planet by 70 %

A new type of rice created by a simple cross could reduce the discharge of methane crops, which are strong greenhouse gases, in almost three -quarters.

Cultivation of rice is about 12 % of the artificial release of methane. Methane is a gas with a global warming effect 25 times stronger than that of carbon dioxide.

The emissions come from the soil microorganisms of the flooded paddy fields cultivated by rice. These organisms decompose chemicals known as roots that are released by plants, not only produce nutrients that can be used by plants, but also make methane in the process.

Swedish Agricultural Science and his colleague Anna Chunuler has increased two US lines in the laboratory to learn about the details of factors that affect methane production from rice roots. We have raised Japanese cultivation stocks called Nippon Bear, which have average methane release and genetically modified strains. Low methane emissions called SUSIBA2.

SUSIBA2 has reduced the number of roots that are known to be the more important driver of methane emission than Nippon Bear. However, when both strains are treated with oxantel, which is a chemical substance that inhibits the decomposition of hemalate by bacteria, the Susiba2 shares still decrease the methane. This means that there must be another factor that causes different varieties.

SUSIBA2 crops have been found to secrete high -level ethanol.

Later, the team rely on traditional breeding techniques to generate new US stocks by passing high -yielded elite varieties, along with Heidin varieties, a stock that produces low fumalate and high ethanol.

In the two -year outdoor exam in China, the new strain has generated more than 8 tons of crops per hectar, but compared to the world average of more than 4 tons, a methane is 70 % less than the breeded elite varieties. It was issued. 。

Johannes Le Curtr, a New Southwells University in Sydney, Australia, says this study is a sufficiently executed research on the culprit behind the crop’s greenhouse gas.

“The core point of this study is to not use hardcore genetic engineering, editing technology, and transgenic approaches,” Le Coutre says. “They use traditional mating to create a new rice line that lowers methane synthesis.”