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一个高烟碱转化烤烟株系的鉴定分析

Hunan Agricultural Sciences(2021)

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Abstract
经连续3 a跟踪筛选获得一个具有稳定高烟碱转化率的株系TS01,其田间生长株型为筒形,初烤烟叶表面具有色度较强的"樱红"色斑块,斑块表面具有明显的小颗粒状物体,烟叶闻香突出.微观下TS01烟叶细胞皱缩严重,表面高低不平,个别区域变形严重.与K326和云烟87相比,TS01烤后烟叶的降烟碱、麦斯明和N-甲酰基降烟碱含量均有大幅度的提高,分别占总生物碱含量的90.78%、0.86%和0.11%,烟碱含量显著降低,占总生物碱的比例仅为6.25%,烟碱转化率达到了93.55%,而K326和云烟87的烟碱转化率分别仅为1.48%和1.75%.采用SNP技术将其与36个烟草主栽品种进行遗传背景分析,发现TS01与云烟85和毕纳1号亲缘关系最近,接着为K326,云烟116、NC55、云烟87、G80等,与翠碧1号、中烟101、中烟100、红花大金元等亲缘关系较远.
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