低温和授粉对黄瓜产量构成因素的影响  

Effect of Low Temperature and Pollination on Cucumber Yield Formation

作　　者：徐冉[1] 缪旻珉[1] 曹碚生[1] 

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225009

出　　处：《中国蔬菜》2010年第24期53-56,共4页China Vegetables

基　　金：国家重点基础研究发展计划(2009CB119000);国家自然科学基金(30871721);江苏省植物功能基因组学重点实验室开放基金(K07005)

摘　　要：以3个黄瓜耐低温品系NY-2、JY-2、Hot-1和低温敏感品种津研4号为材料,研究授粉(授粉与不授粉)和温度(28℃/18℃与28℃/12℃)对黄瓜产量和节位数、雌花节位百分率、坐果率3个产量构成因素的影响。结果表明,各耐低温品系在低温下产量相对较高的原因有所不同。与津研4号相比,低温下JY-2节位数较多,NY-2花粉更耐低温,而Hot-1有较高的单性结实能力;NY-2花粉的耐低温能力高于津研4号和JY-2,低温下用NY-2花粉授粉的JY-2和Hot-1植株可以获得比用JY-2花粉授粉植株更高的产量。Three cold-tolerant lines （NY-2,JY-2 and Hot-1） and one cold-sensitive cultivar （Jinyan No.4） of cucumber （Cucumis sativus L.） were treated with temperatures of 28 ℃/18 ℃ （day/night） or 28 ℃/12 ℃ with or without pollination.Marketable yield and 3 yield ？components （node number,percentage of nodes with female flowers and fruit setting rate） were recorded.The results show that 3 cold-tolerant genotypes rely on different mechanisms to keep relatively higher yield than‘Jinyan No.4’under cold stress.Comparing to‘Jinyan No.4’,JY-2 has more node numbers,NY-2 has more cold-tolerant pollens,and Hot-1 has higher parthenocarpic ability.Cold tolerance of NY-2 pollens is higher than that of‘Jinyan No.4’and JY-2.Under low temperature,JY-2 and Hot-1 plants pollinated with NY-2 pollens can produce higher yields than those pollinated with JY-2 pollens.

关 键 词：黄瓜 低温 单性结实 授粉 产量 

分 类 号：S642.2[农业科学—蔬菜学]