CAJ | 학술논문

以紫薇子叶期幼苗为试验材料，采用不同秋水仙素浓度和时间组合处理其生长点，成功获得四倍体（2n=4x=96）和六倍体（2n=6x=144）。诱变株与二倍体对照植株形态差异明显，植株矮小粗壮，叶片变皱、粗糙，增厚，气孔密度减小，气孔保卫细胞（一对，下同）长、宽分别增大65．79％和45．01％，保卫细胞内叶绿体数量增加80．25％，且颗粒增大。四倍体花粉粒直径增大59．07％，花瓣长宽略有增加，但花序长和花朵数反而减少。人工诱导四倍体和普通二倍体茎尖都有内多倍化现象，并且前者内多倍化水平低于后者。
이자미자협기유묘위시험재료，채용불동추수선소농도화시간조합처리기생장점，성공획득사배체（2n=4x=96）화륙배체（2n=6x=144）。유변주여이배체대조식주형태차이명현，식주왜소조장，협편변추、조조，증후，기공밀도감소，기공보위세포（일대，하동）장、관분별증대65．79％화45．01％，보위세포내협록체수량증가80．25％，차과립증대。사배체화분립직경증대59．07％，화판장관략유증가，단화서장화화타수반이감소。인공유도사배체화보통이배체경첨도유내다배화현상，병차전자내다배화수평저우후자。
Tetraploid （2n=4x= 96） and hexaploid （2n= 6x= 144） plants were successfully induced from seedling of Lagerstroernia indica L. by processing shoot apical meristem with colchicine. The results indicated that the variants, which were characterized by stunted but stout plant, wrinkled and thicker leaves, less stoma frequency, larger（length rised by 65.79 % and width, 45.01%） guard cells （a pair, the same as below）, more larger（rised by 80.25%） chloroplasts in each pair of guard cells, were significantly different from the diploid plants in morphology. Tetraploid plant got markedly larger （rised by 59. 07%） pollen grains, slightly larger petals, longer inflorescence but less flowers than diploid plants. Endopolyploidy was observed in both induced tetraploid plant and diploid plant, and endopolyploidy degree of the former was lower than that of the latter.