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In addition, the human X-specific and Y-specific whole chromosome painting probes were hybridized onto metaphase spreads obtained from male of Elaphodus cephalophus.No signals were detected, which indicates the phylogenetic relationship between human and the tufted deer is not close.
分别用人X、Y染色体特异的整条染色体涂染探针,通过荧光原位杂交的方法,检测核型Ⅰ中是否存在与人X、Y染色体同源的片段,结果显示该毛冠鹿间期、中期细胞都呈阴性,提示可能毛冠鹿与人的亲缘关系较远。
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In this research, we attempted to construct an SSH (suppression subtractive hybridization) library using the leaves of wild H. villosa (Gh21) inoculated by Erysiphe graminis and its susceptible EMS-induced mutant M14S with no inoculation.We screened 218 positive clones in the SSH library, and gained 60 ESTs after sequencing.
本研究应用抑制性消减杂交技术,以野生型簇毛麦(Gh21)及其感病突变体(M14S)为材料,建立白粉菌诱导的叶片的SSH文库,获得218个阳性克隆,对其中部分克隆测序,获得60个EST序列。
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Fromthese facts,It could be deduced that 8 to 14 pairs of chromosomes possessed a certaindegree of hetorology,which was directly groved to be hybrid origin of P.tomentosaaccording to the good chromosome homology and fertility of P.bolleana and thehybrids of P.tomentosa×P.bolleana,it could be further deduced that the original parentsof P.tomentosa involved probably P.bolleana or P.alba.
从终变期、中期I的染色体构型看,有数目不等的联会程度较差的单价体和棒状二价体出现,在后期I,甚至末期I亦可见到含落后染色体分裂相的细胞,由此推断可能有8~14对染色体表现出一定程度的异源性,鉴于新疆杨以及毛白杨与新疆杨杂交产生的杂种毛新杨的染色体同源性较强、育性较好等现象,进一步推断毛白杨起源亲本可能包括新疆杨或银白杨。
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As the ecological conditions of the producing areas to adapt to its development, the mid-90's Gansu Agricultural University Science and Technology Commission and Jingyuan County, the use of Zhongwei goats as a female parent, male parent for hybrid Angora goat hair used to cultivate Gansu-goats, the effect is very clear , The third-generation hybrid produced their own wool and mohair similar.
由于产区的生态条件适应其发展,90年代中期甘肃农业大学与靖远县科委利用中卫山羊作为母本,安哥拉山羊作父本杂交培育甘肃毛用型山羊,其效果十分明显,杂交三代所产毛己与马海毛近似。
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cross bred:杂种的,杂交的 杂种,杂交型(羊)毛
cross breaks | 横折, 折纹 | cross bred | 杂种的,杂交的 杂种,杂交型(羊)毛 | cross breeding | 杂交育种, 杂交繁育