不同生长发育期红花石蒜无性繁殖系数及子球生物学性状差异性研究

Studies on Vegeta tive Propaga tion Coeff ic ient of L ycoris radia ta and Biolog ica lCharacters’D iversities of Cormel in D ifferent Developmen t Pha se

摘要: 在红花石蒜不同生长发育期进行八分法切割繁殖,研究无性繁殖系数和子球生物学性状差异性。结果表明:(1)不同生长发育期无性繁殖系数在0. 80～6. 80之间浮动,休眠期的6、7月和旺盛生长初期的9月繁殖系数较高;(2)不同生长发育期无性繁殖的子球鲜质量、最大直径、子球高度、根系长度、根基粗度及根系数量等生物学性状均呈现1%水平极显著差异。综合分析认为休眠期的6、7月,旺盛生长初期的9月及生长后期的4月是适宜无性繁殖的季节。

Abstract: Studies were made on the vegetative p ropagation coefficient and cormelps biological characters usingeighth-excision in different development phase of Lycoris rad iate. The results showed: ( 1 ) the p ropagationcoefficientwere from 0. 8 to 6. 8 in different development phase, the highest p ropagation coefficient appeared in June, July in dormancy stage and Sep tember in initial stage of vigorous growth; (2) all of biological characters, such ascormelps fresh weight, size, height, root length, roughness and root quantities, p resented 1% significant difference.These monthswas thought to excise Lycoris rad iate by comp rehensive analysis, for instance June, July in dormancystage, Sep tember in initial stage of vigorous growth, and Ap ril in last stage of growth.