106 aeeessions of Tibetan wild barley, including 50 accessions of the two-rowed wiht barley Hordeum vulgare ssp. sopntaneum (HS), 27 accessions of the six-rowed bottle-shaped wild barley H. lagunculiforme (HL) and...106 aeeessions of Tibetan wild barley, including 50 accessions of the two-rowed wiht barley Hordeum vulgare ssp. sopntaneum (HS), 27 accessions of the six-rowed bottle-shaped wild barley H. lagunculiforme (HL) and 29 accessions of the six-rowed wiht barley H. agriocrithon (HA) that separately represent different agrigeographical regions of Tibet, were used to study the genetic diversity and genetie differentiation using SSR markers selected from seven barley linkage groups. 229 allelic variants were identified with an average of 7.6 alleles/locus. The average of total number of alleles per locus in HA (6.4) is much higher than that in HS (3.9) and HL (3.4). The genetie diversity and its standard deviation among the three subspecies were in the order of HS〉HL〉HA. Very significant genetic differentiation was observed among the three subspecies of wild barley. Comparisons of the results fiom this and previous studies showed a strong Oriental-Occidental differentiation of barley, and that Shannan region of Tibet might be the center of origin of the Tibetan two-rowed wild barley, thus supporting not only the hypothesis of a mono-phyletie origin of cultivated barley but also the proposition that the Tibetan two-rowed wild barley as ultimate progenitor of Chinese cultivated barley.展开更多
野大麦具有抗逆性强、适应性广、营养价值高等特点,在粮食作物生产、畜牧业发展和环境治理等方面有巨大的潜力。为了解目前国内外对野大麦的研究现状及发展方向,本文基于Web of Science核心合集数据库(WOS)与中国知网数据库(CNKI)数据...野大麦具有抗逆性强、适应性广、营养价值高等特点,在粮食作物生产、畜牧业发展和环境治理等方面有巨大的潜力。为了解目前国内外对野大麦的研究现状及发展方向,本文基于Web of Science核心合集数据库(WOS)与中国知网数据库(CNKI)数据库利用文献计量学方法,对野大麦近30年的年度发文量、所属机构、国家间合作关系、被引率、关键词及文献来源等方面进行梳理。结果表明:国内外关于野大麦的研究有很多,但因地理文化差异,我国学者对野大麦的研究绝大多数为短芒大麦草(Hordeum brevisubulatum),国外学者则主要研究钝稃野大麦(H.spontaneum)及其变种。近30年来,两个数据库中收录的关于野大麦的文章数量相差不多,均呈稳步上升状态,在2019年达到顶峰。中国、以色列、德国的发文量位于世界前列,以色列、德国、美国的合作贡献最大,其中海法大学(University of Haifa)和内蒙古农业大学的发文量最多。国内外的期刊中《草地学报》和《Theoretical and Applied Genetics》的载文量最多;以“野大麦”、“wild barley”和“barley”为关键词出现的频率较高,“抗性(resistance)”、“胁迫(stress)”和“基因(gene)”等次之,这从一定程度上反映出目前野大麦的研究热点,也为兼顾野大麦的饲用价值、食用价值及生态价值提供了理论支撑。展开更多
文摘106 aeeessions of Tibetan wild barley, including 50 accessions of the two-rowed wiht barley Hordeum vulgare ssp. sopntaneum (HS), 27 accessions of the six-rowed bottle-shaped wild barley H. lagunculiforme (HL) and 29 accessions of the six-rowed wiht barley H. agriocrithon (HA) that separately represent different agrigeographical regions of Tibet, were used to study the genetic diversity and genetie differentiation using SSR markers selected from seven barley linkage groups. 229 allelic variants were identified with an average of 7.6 alleles/locus. The average of total number of alleles per locus in HA (6.4) is much higher than that in HS (3.9) and HL (3.4). The genetie diversity and its standard deviation among the three subspecies were in the order of HS〉HL〉HA. Very significant genetic differentiation was observed among the three subspecies of wild barley. Comparisons of the results fiom this and previous studies showed a strong Oriental-Occidental differentiation of barley, and that Shannan region of Tibet might be the center of origin of the Tibetan two-rowed wild barley, thus supporting not only the hypothesis of a mono-phyletie origin of cultivated barley but also the proposition that the Tibetan two-rowed wild barley as ultimate progenitor of Chinese cultivated barley.
文摘野大麦具有抗逆性强、适应性广、营养价值高等特点,在粮食作物生产、畜牧业发展和环境治理等方面有巨大的潜力。为了解目前国内外对野大麦的研究现状及发展方向,本文基于Web of Science核心合集数据库(WOS)与中国知网数据库(CNKI)数据库利用文献计量学方法,对野大麦近30年的年度发文量、所属机构、国家间合作关系、被引率、关键词及文献来源等方面进行梳理。结果表明:国内外关于野大麦的研究有很多,但因地理文化差异,我国学者对野大麦的研究绝大多数为短芒大麦草(Hordeum brevisubulatum),国外学者则主要研究钝稃野大麦(H.spontaneum)及其变种。近30年来,两个数据库中收录的关于野大麦的文章数量相差不多,均呈稳步上升状态,在2019年达到顶峰。中国、以色列、德国的发文量位于世界前列,以色列、德国、美国的合作贡献最大,其中海法大学(University of Haifa)和内蒙古农业大学的发文量最多。国内外的期刊中《草地学报》和《Theoretical and Applied Genetics》的载文量最多;以“野大麦”、“wild barley”和“barley”为关键词出现的频率较高,“抗性(resistance)”、“胁迫(stress)”和“基因(gene)”等次之,这从一定程度上反映出目前野大麦的研究热点,也为兼顾野大麦的饲用价值、食用价值及生态价值提供了理论支撑。