摘要
为了研究魔芋花器的主要生物学特性及其种间可交配性,以花魔芋、白魔芋、珠芽魔芋、西盟魔芋、勐海魔芋为材料,观察记录花芽发育过程的主要生物学性状,用光学显微镜观察花粉形态特征,采用离体萌发法检测花粉活力,通过人工授粉鉴定其交配性。结果表明:5种魔芋花器形态、色泽差异大,种内也有不同的变异,花魔芋与珠芽魔芋佛焰苞漏斗状,其余为舟状,其中花魔芋花器较大;光学显微镜下花粉粒形态不同;除珠芽魔芋外,其余4种魔芋种内异株杂交都表现出高度的亲和性,而种间正反交有差异,部分组合不亲和,以白魔芋为母本具有广亲和性。因此,白魔芋可作为魔芋亚种间基因交流的桥梁亲本。
The aim was to study the biological characteristics and the interspecies crossability of Amorphophallus Blume flower.A.konjac,A.albus,A.bulbifer,A.krausei and A.kachinensis were used as materials.The biological characteristics of flower buds were observed and recorded.The morphological feature of pollen was observed with the optical microscope.The pollen vigor was tested by in vitro germination,and the compatibilities were identified by artificial pollinated.The results showed that,the morphology and color of the flower had apparent variations among the subspieces,and also in the same subspiece.The spathes of A.konjac and A.bulbifer were funnel-shaped and the others were boat-shaped,and the flower of A.konjac was larger.The appearances of pollen grain were observed different under the optical microscope.Cross-pollination in the subspieces showed high compatibility,except for A.bulbifier,however,incompatibilities were observed in the partial wide cross combinations and reciprocal cross.A.albus,as female parent,showed wide compatibility and had potential value as the genetic bridge for cultivars improvement.
出处
《中国农学通报》
CSCD
北大核心
2011年第31期126-131,共6页
Chinese Agricultural Science Bulletin
基金
湖北省自然科学基金重点项目"魔芋资源创新与营养系杂交新品种培育"(2010CBB04001)
湖北省恩施州农科院青年科技创新基金(2011nkyc06)
关键词
魔芋属
花粉
远缘杂交
可交配性
Amorphophallus Blume
pollen
wide cross
crossability
