The result showed that in irradiated swatch cells there are marked chromosome aberrances such as chromosome bridge, nucleus vacule and trail chromosome, there into, 4kγ-8kγ doses 60 ? Co-γ rays may be feasible doses to breed gladiolus.
结果表明 ,与对照组相比 ,经过照射的样本细胞内具有染色体桥、核空泡化、落后染色体等染色体畸变现象 ,其中 4kγ - 8kγ剂量的60 Co -γ射线是较为适宜的唐菖蒲育种的照射剂量
We set up variation regulation model in a annual ring wall of the thickness and the cell area based on least -square which provided the theory basis for further analyzing some questions about physics mechanical properties of timbers, for making effective measure to breed fast-growing, high quality timber and for forecasting material quality in early stage. In this thesis, we presented the model structure, realized the curve fitting process with Matlab and confirmed the model which is accurate.
Cloning, high-level expression, and characterization of the somatotropin (ST) gene of an indigenous Nili-Ravi breed of water buffalo Bubalus bubalis (BbST) are described.
Spermatozoa of a bull of the Britanofrizskaya breed were used in the experiments.
Gorbatov Red breed was monomorphic at the microsatellite locus with the only allele 164 bp in length.
In Gorbatov Red breed of dairy type with good beef qualities and low milk-fat yield, lower level of heterozygosity for PRLgene was demonstrated compared to Ayrshire and Black Pied breeds that have high milk-fat yield.
Structural Organization of Gene Pool by Immunogenetic Markers in the Ukrainskaya Stepnaya Belaya Breed of Pigs