南瓜属种间杂交后代花粉活力研究  

Study on Pollen Viability of Cucurbita Interspecific Hybrid Progenies

作　　者：王雪芬 智海英[2] 李永平[2] 马海龙[2] 

机构地区：[1]天津市宝坻区种植业发展服务中心,天津宝坻301800 [2]山西省农业科学院园艺研究所,山西太原030031

出　　处：《天津农业科学》2012年第5期100-102,共3页Tianjin Agricultural Sciences

基　　金：山西省科技攻关项目(2006031031-2);山西省农业科学院青年基金项目(YQN0508;YQN0606)

摘　　要：采用TTC染色法对南瓜属种间杂交后代进行了花粉活力测定。结果表明,美洲南瓜×中国南瓜种间杂种F1花粉活力低于双亲;F2的花粉活力发生性状分离,部分单株的花粉活力比F1进一步降低、部分单株则有所提高;BC1F1中部分单株的花粉活力已恢复到了亲本水平。(印度南瓜×中国南瓜)×美洲南瓜种间杂种F1的花粉干瘪,活力为0。分析认为,南瓜属种间杂种F1花粉活力降低是导致其育性下降的因素之一,可从自交或回交后代中分离筛选出花粉活力有所恢复的单株,其中又以回交的方法效果更好。The pollen viability of Cucurbita interspecific hybrid progenies was determined by TTC staining. The results showed the pollen viability of C. pepo×C. moschata hybrid F1 was lower than their parents; its traits of F2 separated with decreasing or improving than F1; some BC1F1 individuals recovered their parent level in pollen viability. The pollen of （C. maxima×C. moschata）×C. pepo hybrid F1 was shriveled with no viability. These indicated the pollen viability decreasing might be a factor of low fertility of Cucurbita interspecific hybrid F1. Individuals recovered pollen viability partly were separated from inbred or backcross progenies, and the later was better.

关 键 词：南瓜属 种间杂交 花粉活力 

分 类 号：S642.6[农业科学—蔬菜学] S642.1[农业科学—园艺学]