提高雾化栽培马铃薯微型薯结薯能力的初步研究

用 3种处理方法 ,下放植株 ,激素 (CCC) ,剪尖对雾化栽培室内的脱毒苗进行随机区组处理。结果表明 :激素和剪尖对叶面积系数 (LAI)、株高、茎粗等营养器官生长特征影响一致 ,可用剪尖替代激素促进形态建成 ;下放植株可极显著促进根系发育 ,促使腋芽向匍匐茎转化 ,可极显著提高微型小薯的产量 ;同时 ,相关分析表明 ,LAI与单株薯数呈极显著正相关 (r =0 874 8 ) ;根系体积与单株薯数显著相关 (r=0 82 0 1 ) ,与单株匍匐茎数极显著相关 (r =0 8770 )。

INCREASING MINITUBER PRODUCTION IN AEROPONIC CULTURE

Three treatments,putting plant down,plant hormone and cutting tip,were investigated for their effect on minituber production in aeroponic culture by using a randomized complete block design.Cutting tips had a similar effect to the treatment of plant hormone CCC on the potato plant shape characters:leaf area index(LAI),plant height,and stem diameter,therefore plant hormone could be replaced by cutting tips.The effect of putting plant down was positive to promote potato root development,to change the buds into stolons,and to improve the production of minituber.The correlation analysis showed that there was significant positive correlation between LAI and average tubers per plant(r=0 8748 ** ),between the root volume and average tubers per plant(r=0 820 *),and between the root volume and stolons per plant(r=0 8770 ** )。