The hottest new scientific research project in Hen

2022-08-12
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Henan new scientific research project to make hybrid controllable wheat will realize "industrialized" breeding

Abstract: "the potential of hybrid wheat is beyond imagination." In Xiuwu, the maximum yield of new hybrid wheat per mu reached 898 kg; In Jiyuan and Xinxiang, the yield per mu of large-scale planting remained at 830-850 kg, and the yield of wheat per mu exceeded that of ordinary wheat by more than 100 kg

Henan major science and technology project "Research on combination and large-scale and efficient seed production technology of strong advantage BNS type hybrid wheat" makes hybridization controllable, and hybrid wheat can be born in the near future

"if wheat breeding is still in the 'small four round era', the breeding technology we developed will lead the industry into the 'high-speed rail era'!" On July 8, Professor Ru Zhengang, director of the wheat Center of Henan University of science and technology and director of the provincial Hybrid Wheat Engineering Technology Research Center, talked about the provincial major scientific and technological project "Research on strong advantage BNS type hybrid wheat combination and large-scale and efficient seed production technology" that just passed the acceptance of the expert group. As the project host, he could not hide his excitement and pride. This project achievement reached the domestic leading level and filled the world gap

distinguish "men and women" from wheat and make hybridization controllable

"it is a common phenomenon in the biological world that hybridization produces heterosis. The more distant the biological hybridization is and the greater the ecological difference is, the easier it is to produce obvious heterosis."

Ru Zhengang, for example, Henan wheat has many ears and grains, but the grains are small and the plants are weak; Yunnan wheat has strong plants, large ears and large seeds, but it also has congenital deficiencies of small ears and small seeds. "If the wheat of the two places is crossed, the new varieties produced can not only have the advantages of both, but also have stronger adaptability, and can be popularized and planted in most wheat areas in the middle of the two provinces."

but in the past, such wheat hybridization technology that can highlight the advantages can almost only exist in theory

"wheat hermaphroditism, self reproduction, coupled with the protection of glume, makes breeding a lot of variables, and the difficulty of hybridization is much higher than that of other crops." Ru Zhengang said that using the original method to select new varieties has heavy workload, low efficiency and uncontrollable results. Usually, the breeding of a wheat variety takes more than 10 years or even longer, which makes wheat the only important food crop in the world that has not yet developed and utilized heterosis

bns includes mold manufacturers, colleges and universities, and preferred customers (new materials of low temperature sensitive male sterile line wheat cultivated by Bainong Series). With the maturity of breeding technology, controllable hybridization has become a reality, which can meet the needs of parents in different wheat areas

according to Ru Zhengang, the reason why the sterile line is "sterile" is that the selected plants only have the characteristics of "paternal" or "maternal". With the distinction of "gender", of course, they cannot self pollinate and seed. "Using this, we can make" sterile lines of different 'genders' marry each other, cross each other perfectly, and' produce 'excellent' offspring 'we want. "

it took 20 years to make miracles with "defective products"

in 1997, Ru Zhengang found two lines of wheat plants were obviously "abnormal" during field operations in Huixian breeding base: the glumes of other wheat were normally closed after pollination, while the glumes of abnormal wheat were completely opened. These wheat were "bagged" and the seed setting rate after self pollination was less than 20%. Cause impact "this' semi sterile 'situation does not conform to all known laws and cannot be used in production." Ru Zhengang was fascinated and headache about this sudden "alien": "what is the 'semi sterile' wheat? What is the law that does not conform to the known law? How to use this phenomenon... These are the contents that scientists should explore."

Ru Zhengang led the team, using all available methods, began a long research and transformation, and finally made a breakthrough in 2003, successfully bred the "low temperature sensitive sterile line", found a perfect solution, turned the "semi sterile" into a 100% sterile line, and "chewed off" the "hardest bone" in the whole project

then, the Henan University of science and technology where Ru Zhengang is located "joined hands" with China Agricultural University, and launched a joint research initiative nationwide. The Institute of genetic development of the Chinese Academy of Sciences, Northwest Agricultural University, Shandong Agricultural University... One after another, scientific research institutions and colleges and universities responded and joined the research, becoming a powerful promoter of the project. Finally, it took another 14 years to jointly solve this "world problem" and "century problem", Let the original "defective products" create miracles and become exquisite "artworks" of agricultural science

"0 to 1" breakthrough, hybrid wheat in the future can be expected

"now, we are equivalent to mastering the 'components' of hybrid wheat. If we assemble the' components' according to needs, we can produce ideal wheat varieties."

"Research on combination and large-scale and efficient seed production technology of strong dominant BNS type hybrid wheat" will turn "factory breeding" into a reality, and can quickly cultivate a series of excellent hybrid wheat varieties. Ru Zhengang said excitedly that the maturity of this technology is a "0 to 1" breakthrough

"the potential of hybrid wheat is beyond imagination." In Xiuwu, the maximum yield of new hybrid wheat per mu reached 898 kg; In Jiyuan and Xinxiang, the yield per mu of large-scale planting remained at 830-850 kg, and the yield of wheat per mu exceeded that of ordinary wheat by more than 100 kg. Ru Zhengang said that this is only the "primary variety" and "experimental variety" of hybrid wheat. With the continuous progress of hybrid wheat breeding, more complete hybrid wheat varieties will appear, and the performance of disease resistance, yield and quality will be greatly improved

Ru Zhengang proudly said that the breakthrough of hybrid wheat technology will make Peek a kind of poly (aryl ether ketone) peek, which will lead the wheat breeding level in our province and China to enter the "high-speed rail era"

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