Its use is limited to the preservation of breedingmaterial or the establishment of clonal seed orchards.
其用途仅限于保持育种材料或建立无性系种子园。
2
By means of multielement analysis, 7 character indexes of 49 breedingmaterial had been made by a main composition and cluster analysis in malting barley.
利用多元分析法对49个二棱型啤酒大麦育种材料的7个主要性状指标进行了主成份分析与聚类分析。
3
Since high degree of sugar beet self-incompatibility, it often leads to loss of fine individual genotype, and is hard to keep good breedingmaterial for breeding.