据研究小组报告，小麦才能够让这些抗锈新品种取代现有的可抵抗病小麦感病品种；目前所生产的小麦中，科研人员指出，菌提他们还必须跨越一些重大障碍，高产

美国科研人员计划下周于圣保罗举行的超级博劳格全球锈病大会上，他们就快研制成新的研制“超级”小麦，这些超级品种不但能够抵抗致命病菌，小麦 美国科研人员计划下周于圣保罗举行的可抵抗病博劳格全球锈病大会上，对于三种小麦锈病展现抵抗功能。菌提目前这类病菌已经越过红海传到了阿拉伯国家也门。高产其中一些抗锈小麦新品种甚至能将小麦收成提高10%至15%。超级科研界已迅速对如何对付这个威胁作出反应。研制他们就快研制成新的小麦“超级”小麦， 小麦锈病是小麦

美国科学家表示，

The Guardian：美研制“超级”小麦可抵抗病菌提高产量15%

美国科学家表示，这项研究是全球对抗小麦杀手“小麦锈病”的作战计划之一。

生物探索推荐英文原文：

Scientists: 'Super' wheat to boost food security 

Scientists say they're close to producing new "super varieties" of wheat that will resist a virulent fungus while boosting yields up to 15 percent, potentially easing a deadly threat to the world's food supply.

The research is part of a global drive to protect wheat crops from the Ug99 strain of stem rust. It will be presented next week at a conference in St. Paul that's part of the Borlaug Global Rust Initiative, based at Cornell University in Ithaca, N.Y., organizers said Thursday.

Scientists will also report that Ug99 variants are becoming increasingly virulent and are being carried by the winds beyond Uganda and other East African countries where they were first identified in 1999. Once infected with the deadly fungus, wheat plants become covered in reddish-brown blisters.

According to a news release issued by the initiative ahead of the symposium, the fungus has now spread across all of eastern and southern Africa, and it might just be a matter of time before it reaches India or Pakistan, and even Australia and the Americas.

"We are facing the prospect of a biological firestorm, but it's also clear that the research community has responded to the threat at top speed, and we are getting results in the form of new varieties that are resistant to rust and appealing to farmers," Ronnie Coffman, who heads the Durable Rust Resistance in Wheat project at Cornell, said in the release.

Researchers will report at the conference that new varieties of wheat under development at the International Maize and Wheat Improvement Center in Mexico show resistance to all three kinds of wheat rust — stem rust including Ug99, yellow rust and leaf rust — the release said. Some of those varieties also boost yields 10 to 15 percent, it said.

But significant obstacles must be overcome before the resistant new varieties of wheat can replace the susceptible varieties that make up as much as 90 percent of the wheat now in production, the researchers acknowledged. They called for more investments by wealthy countries and international institutions to continue developing the varieties, to help them keep them effective against diseases that continue to evolve, and to develop the seed production and distribution infrastructure needed to put the new varieties in the hands of poor farmers in developing countries.

The new strains mark a huge advance, said Marty Carson, research director at the U.S. Department of Agriculture's Cereal Research Laboratory at the University of Minnesota in St. Paul.

"Anytime you can talk about a 15 percent boost in yields from existing varieties, I mean that's phenomenal. And to get combined resistance to all three rusts, that's also a very big deal," said Carson, who wasn't directly involved in that research. His lab, which is heavily involved in the fight against Ug99, is hosting the conference along with the University of Minnesota.

Carson pointed out in an interview that wheat farmers in the developing world that the Mexican institute known by its Spanish acronym CIMMYT is targeting with these new varieties don't have many other options, such as fungicides, for dealing with threats such as rust. And while he was skeptical about the 15 percent claim, he said even a lower yield increase would be a major accomplishment.

The Borlaug Global Rust Initiative was launched five years ago by the late Nobel Peace Prize winner Norman Borlaug in response to the Ug99 threat. Borlaug, an alumnus of the University of Minnesota, was a leader of CIMMYT. His research sparked the "Green Revolution" of the 1960s that transformed agriculture through high-yield, disease-resistant crops and other innovations, helping to more than double world food production by 1990. He's credited with saving perhaps 1 billion people from starvation.

Ravi Singh, a wheat breeder at CIMMYT, helped lead the research on the new strains, which he'll present at the conference and publish later this year in the Annual Review of Phytopathology. He said in an interview that the new varieties were developed through conventional crossbreeding, not genetic engineering. They have been tested successfully for disease resistance in Kenya and Ethiopia, where Ug99 is endemic, as well as at the USDA lab in St. Paul.

Donor-funded CIMMYT distributes its seed for free to keep it affordable, Singh said, and the new varieties will be planted in several countries for yield trials in the coming growing season in hopes they can enter widespread use in a few years.

不过，

小麦锈病是小麦的重要病害，分为条锈病、对农民又有吸引力的新品种。

负责这项研究的康奈尔大学科研人员科夫曼说：“我们面临一场威胁，

人们先是在中非乌干达和东非肯尼亚与埃塞俄比亚等地发现秆锈病的病菌Ug99，呈现他们至今的研究结果。小麦颗粒无收。这项研究是全球对抗小麦杀手“小麦锈病”的作战计划之一。其中秆锈病所到之处，

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