【摘要】 本文针对湖北贝母生产中存在繁殖系数低的问题,研究了单鳞片砂培繁殖对提高鳞茎繁殖率的效果和原理。试验结果表明:1.单鳞片繁殖率为对照种鳞茎的5—9倍,2.低温(2—10℃)预处理4—8周和暗条件培养,能有效地提高子球形成率,促使子球迅速长大,3.植物激素(6-BA、KT、2,4-D)处理,有利于促进鳞片不定芽原基的分化,繁殖率为种茎繁殖的9—11倍;4.单鳞片繁殖的小鳞茎主要发生在鳞片基部的茎盘上,还可发生在鳞片的远轴面上,但不发生在近轴面。更多还原

【Abstract】 To solve the problem of low propagational coefficient on the production of Hubei Fritillary (Fritillaria hupehensis Hsiao et K. C. Hsia), and use the method of sand culture of single-scale propagation, this paper presents the method of raising its propagational rate and is related with the research on its principle. The result of the experiments shows: 1. the single-scale propagational rate is 5—9 times as high as the contrast of mother bulbs; 2. the pretreatment under low temperature (2—10℃) for 4—8 weeks and in dark place, can promote the growth efficiently and quick formation of bulblets; 3. the treatment of plant regulators (6-BA, KT, 2, 4-D) on test materials is useful for the differentiation of scale of axillary bud primordia, its propagational rate is 9—11 times as high as mother bulbs; 4. according to our cbservation, (about 70—90 days of culturing)the daughter bulbs are mainly produced on basal plate and they can be also produced on abaxial side, but not on adaxial side.更多还原