CAJ | 학술논문

通过观察9个黑杨派(Populus aigeiros Duby Section)无性系雌雄花的形态和结构及发育过程、果实及种子的形态和结构特征,播种试验种子发芽率,并进行比较分析发现:雄性无性系I-102(Populus ×euramericana'102/74')、T26(Populus deltoides 'S307-26')、T66(Populus deltoides ‘PE-19-66')和中菏1号(Populusdeltoides 'Zhonghe 1')的成熟雄花序雄花可达80～100朵,每一雄花有雄蕊可达60～100枚,花粉量多,生活力高,是4个有性生殖能力强的无性系.雌性无性系L324(Populus deltoides '1324')和L323(Populus deltoides‘L323')的成熟果穗长9～11 cm,可结蒴果达20～30个,每蒴果种子可达25～40粒;L324的千粒重0.77 g,种子发芽率90%,在常温下储存20 d发芽率仍达60%;L323的千粒重0.55 g,种子发芽率达70%,贮存5 d后发芽率降至60%以下.L324和L323是2个有性生殖能力强的无性系.欧美杨无性系I-107(Populus ×euramer-icana'Neva')、L35(Populus×euramericana 'L35')和美洲黑杨无性系Guariento(Populus deltoides 'Guari-ento')结籽量极少或不结籽,是3个有性生殖能力弱的无性系.
통과관찰9개흑양파(Populus aigeiros Duby Section)무성계자웅화적형태화결구급발육과정、과실급충자적형태화결구특정,파충시험충자발아솔,병진행비교분석발현:웅성무성계I-102(Populus ×euramericana'102/74')、T26(Populus deltoides 'S307-26')、T66(Populus deltoides ‘PE-19-66')화중하1호(Populusdeltoides 'Zhonghe 1')적성숙웅화서웅화가체80～100타,매일웅화유웅예가체60～100매,화분량다,생활력고,시4개유성생식능력강적무성계.자성무성계L324(Populus deltoides '1324')화L323(Populus deltoides‘L323')적성숙과수장9～11 cm,가결삭과체20～30개,매삭과충자가체25～40립;L324적천립중0.77 g,충자발아솔90%,재상온하저존20 d발아솔잉체60%;L323적천립중0.55 g,충자발아솔체70%,저존5 d후발아솔강지60%이하.L324화L323시2개유성생식능력강적무성계.구미양무성계I-107(Populus ×euramer-icana'Neva')、L35(Populus×euramericana 'L35')화미주흑양무성계Guariento(Populus deltoides 'Guari-ento')결자량겁소혹불결자,시3개유성생식능력약적무성계.