无性系地

Efficient callus induction and regeneration procedure were established using growing tip of octoploid triticale 'h739' at glume differentiation stage as explants.Embryonic somaclones were selected.

利用八倍体小黑麦'h739'护颖分化期幼穗作外植体，成功地建立了愈伤组织诱导和再生程序，并获得了长期保持胚性的无性系。

The description in growth characters and genetic variation of 7 new clones of Populus Deltoides is given in this paper.

本文对美洲黑杨7个新无性系在水培条件下的生长特性和遗传变异规律详细地进行了描述。

At the same time, the information of flax biotechnology of anther culture, haploid breeding, utilization of somatic mutation, protoplasmic culture, gene transformation were introduced in detail.

从亚麻花药培养、单倍体育种、体细胞无性系突变体的利用、原生质体培养、转基因技术的研究等方面详细地介绍了我国亚麻生物技术的发展状况。

Based on the results of information investigation, the paper briefly summarizes the research and application of cell engineering technology in agriculture: Chromosome engineering,protoplast culture,anther culture, cell culture, tissue culture and somatic hybridization. The worldwide development and progress in the application of cell engineering in plant breeding are reviewed.

根据文献研究结果，系统地综述了染色体工程技术、原生质体培养、花药培养、细胞培养与无性系筛选、组织培养与体系胞杂交等细胞工程技术，在国内外农作物育种上开发应用后所取得的新进展、新成果，以及这些新成果的产业化，对促进中国农业生产的发展所起的作用。

Various clones families could be propagated commercially without having been clonally tested.

在这些家系中不同无性系被大量地繁殖，也没有进行无性系的测定。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。