The relative nuclear DNA content of nuclei isolated from young leaves including 4 diploid, 2 triploid and 1 tetraploid was measured by flow cytometry in grape cultivars.
利用流式细胞术对4个葡萄二倍体、2个三倍体、1个四倍体试管苗的细胞核dna的相对含量进行测定。
2
Polar nuclei The, usually two, haploid nuclei found midway along the EMBRYOSAC, forming a binucleate central cell. They may fuse to form the diploid definitive nucleus.