黑河中游沙枣的传粉生物学研究  

Pollination Biology of Elaeagnus angustifolia in Middle Reaches of the Heihe River in Northwest China

作　　者：潘成臣[1,2] 刘林德[2] 赵哈林[1] 侯月利[2] 张莉[2] 王丽娟[2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 [2]鲁东大学生命科学学院,山东烟台264039

出　　处：《中国沙漠》2012年第3期780-783,共4页Journal of Desert Research

基　　金：国家重点基础研究发展计划"973"项目(2009CB421303);国家自然科学基金课题(30972422);国家科技支撑课题(2011BAC07B02-06)资助

摘　　要：在甘肃省临泽县黑河中游的中国生态系统研究网络临泽内陆河流域研究站试验区对沙枣花粉育性、花粉-胚珠比(P/O)、花粉活力与寿命、花粉储存物类型等进行了观测。结果表明,沙枣花粉为全育的淀粉型花粉;晴天时,花药散粉后6h内,花粉活力维持在90%以上;雨天时,花药散粉后,花粉活力即低于3%;三瓣花、四瓣花单花产生的花粉量无显著性差异,P/O分别为15 250±1 497、14 143±1 438。Pollen fertility, pollen/ovule ratio, pollen viability and longevity, and pollen histochemistry of Elaeagnus angustifolia were determined in the Linze Inland River Research Station in the middle reaches of Heihe River in Northwest China. The pollen of E. angustifolia is of starch type. The pollen viability is higher than 90 % within the 6 hours after anthesis on sunny days and lower than 3 % at the beginning of an- thesis in rainy days. No difference in the pollen production of single flowers is found between different flow- er morphes （three or four petals）. The pollen/ovule ratios of the two morph flowers are 15 250±1 497, 14 143±1 438, respectively.

关 键 词：沙枣 花粉育性 花粉-胚珠比 花粉活力与寿命 

分 类 号：Q948.58[生物学—植物学]