In an era of rapid population growth, food supply has also become a major event that affects the interests of all. The researchers predict that by 2050, the Earth's population will increase by another 2 billion, but the area of ​​cultivated land will hardly change much. In view of this, scientists can only find ways to increase food production per unit area. For decades, Yuan Longping's researchers have been fighting at the forefront of improving hybrid rice production.
Recently, scientists from the University of Sydney, the University of Queensland, and the Johanna Center have published a study in the journal Nature Plants, saying that inspired by NASA, they have developed a reference from the "space age." New technology for rapid breeding and yielding of wheat.
Based on a space food production trial conducted by NASA more than a decade ago, the technology relied on strong lighting mechanisms to increase the growth rate and health of crops. Given the better growth of crops in the greenhouses on Earth, scientists have thought of using low-cost, specific-wavelength LED lights to promote crop photosynthesis.
With well-designed lighting, the research team was able to produce six seasons of wheat, chickpeas, barley, and four generations of rapeseed crops in a year. In contrast, ordinary greenhouses can only grow 2 to 3 crops per year.
Dr. Lee Hickey, who examines crop growth in the greenhouse
It is reported that this technology is also suitable for peanuts, leeks, lentils and other crops, sunflowers, peppers and radishes are also very promising. Hickey said: "At present, we use high-pressure sodium vapor lamps in the greenhouse, which is quite expensive in terms of power demand."
In the paper, they demonstrated that wheat and barley can grow at a density of 900 plants/m2, which incorporates an LED lighting system. This is an exciting opportunity that is expected to be extended to industrialized large-scale planting.
Hickey also pointed out that this rapid breeding technology can not only increase farmers' output, but also improve the quality of crops. The research team compared the characteristics of the plants. Compared with the crops grown under the conventional greenhouse, the number of tillers and yield per spike growth under the new technology was significantly improved.
Dr. Wulff pointed out that although it has been possible to produce food so quickly, the yield and health of crops has always been a problem that “fish and bear's paws cannot be combinedâ€. However, compared to standard conditions, this new technology has been able to achieve both.
Dr. Brande Wulff from John Innes Center
He laughed and said that when a colleague first witnessed, he could not believe that there was such a good result: "Rapid breeding is a technology different from genetic modification. This is good news for people who cannot accept genetic modification."
However, the research team also mentioned in the paper that new technologies are compatible with genetic modification. Dr. Wulf believes that if we can combine genetic technologies such as CRISPR, we will get more benefits.
Details of the study have been published in the recently published journal Nature Plants. The original title is: "Speed ​​breeding is a powerful tool to accelerate crop research and breeding".
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