同时，十二倍体较六倍体的叶绿体数目明显增多，叶绿素含量提高，但气孔密度减小。
The number of chloroplast and chlorophyll content in the dodecaploid are more than hexaploid, stomatal density are lower than hexaploid.
结果表明：白桑类型中有23个材料为三倍体，药桑为二十二倍体，其余材料均为二倍体。
The results indicated that all of the samples were diploidy except that there were 23 triploid materials in the white mulberry and that the drug mulberry were 22-ploidy.
结果表明：白桑类型中有23个材料为三倍体，药桑为二十二倍体，其余材料均为二倍体。
The results indicated that all of the samples were diploidy except that there were 23 triploid materials in the white mulberry and that the drug mulberry were 22-ploidy.
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