主根平均根数和侧根平均根数两个性状的遗传方差均大于环境方差，其重复力分别可达95%和87%。
Both genetic error of main and lateral root number was bigger than that of environmental error, and their repeat was 95% and 87% respectively.
结果表明：以全蛭石为移栽基质的脱毒试管苗成活率可达98．33％，植株生产状态最优，平均株高、发根数、根长几项指标均高于其它移栽基质。
The results show that:Success rate of virus-free seedling transplanted into Vermiculite was 98.33%, plant height, root number, root length of the plants in Vermiculite than those in the other medium.
平均生根数、根长、根冠比和根粗均随光照强度的增强而增大。
With the increasing of light intension, number, length and diameter of root and root-shoot ratio were all increased.
将平均每天的吸烟根数乘以吸烟年份，即是吸烟指数。
The average root number per day multiplied by smoking years of smoking, that is, smoking index.
根施壳聚糖不同程度的提高了细根的根尖数、面积、长度、平均直径和根系活力，改善了植株发育。
To some extent, the treatment of applying chitosan to roots all increase tip number, area, length, average diameter and the vigor of fine roots and improve plant development.
根施壳聚糖不同程度的提高了细根的根尖数、面积、长度、平均直径和根系活力，改善了植株发育。
To some extent, the treatment of applying chitosan to roots all increase tip number, area, length, average diameter and the vigor of fine roots and improve plant development.
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