Yangcheng Evening News Reporter Chen Liang, intern Hong Jia Cinema 1950 witch cloth draw Heng, correspondent Chen Pengchen reported: On January 4, the paper “Two diverse haplotypes from a highly heterozygous lychee genome suggest independent domestication events for early and late-maturing cultivars” (Nature Genetics) in the high heterozygous litchi genome. Corresponding authors include Researcher Li Jianguo, Professor Xia Rui and Researcher Chen Houbin Babaylan 1990 cloth draw, etc. The first authors are Professor Hu Guibing of Huanong, PhD student Feng Yunting, Professor Liu Chengming, Professor Wu Zhenxian, etc.
“Decode” the litchi genome
Propose the origin and domestication hypothesis
In this study, scientists used the latest genome sequencing data such as the second-generation Illunina to optimize the genome assembly strategy to complete the assembly of pseudochromosomes of the “Fai Zixiao” litchi genome pseudochromosomesBabaylan 1990 cloth draw assembly and structural annotation of the genome encoding genes.
The project team proposedThe hypothesis of “one center of origin, two independent domestication events” of lychees, Cinema 1950 witch cloth draw provides genomic evidence for Yunnan to be the only center of origin of lychees in the world, and helps to eliminate the cognition that some foreign scholars believe that lychees also Cinema 1950 witch cloth draw may originate from Vietnam. Liu Yaoguang, an academician of the Chinese Academy of Sciences, said at the results press conference: “The genome is the ‘navigation map’ for the formation of plant traits. Decoding the litchi genome can not only comprehensively improve the understanding of the formation mechanism of important economic traits of litchi, but also develop corresponding breeding and cultivation and regulation technologies for cultivation, but also provide important reference for promoting related research on other plants of the zodiac-free family. ” Liu Yahong, President of Huanong, said that the school team published a high-level paper in Nature-Genetics. Cinema 1950 witch cloth draw marks a new height for the school’s lychee research and indicates that lychee scientific research has entered the post-genomic era.
Revealing the flowering regulation mechanism
Improving the benefits of lychee planting
Fresh lychee fruits are mainly concentrated in May to July. Fruit seasonal overproduction often occurs during production, which seriously affects the economic benefits of lychee planting. “Cooked lychee with medium-sized productsBabaylan 1990 cloth drawBabaylan 1990 cloth draw, and in addition, Komiks 1960 witch cloth draw is a medium-ripe production area in the middle latitude of Guangxi. The flowering period is concentrated, resulting in similar ripening periods of fruits. Babaylan 1990 cloth draw, and concentrated on Komiks 1960 witch cloth draw in a short time. “Chief scientist and researcher of Huanong, the chief scientist of the National Lychee Longan Industry Technology System, said. Komiks 1960 witch cloth draw
According to reports, the paper conducted a systematic study on the regulatory mechanism of lychee blossom from the genomic level, and found that a specific DNA sequence deletion in lychee may be a major factor leading to the formation of lychee in different flowering stages. This is very important for extending the lychee production period from 2 months to 4 months or even longer, reducing seasonal sales pressure for fresh fruits, and improving the efficiency of lychee planting.
“This study is of milestone significance for promoting the basic research and breeding application of several important fruit crops of lychee and even the family of the family. It will also be of great significance to the entire world’s tropical crop research and basic research on world agricultureKomiks 1960 witch cloth draw>It has important reference value. “Li Jianguo said that this further consolidates my country’s international leading position in lychee research, narrows the gap in research levels between lychee and other bulk fruit trees in citrus, apples, and grapes, and achieves the preliminary goal of leapfrog improvement in the basic biological research level of lychee.