花龄对火棘柱头可授性及花粉活力的影响  

Effect of Fowler Age on Stigma Receptivity and Pollen Viability in Pyracantha Roem.

作　　者：杨芩[1] 柏兰平 张杰[1] 唐露[1] 王兴艳[1] 岳阳[1] 

机构地区：[1]凯里学院环境与生命科学学院,贵州凯里556000

出　　处：《北方园艺》2014年第20期18-22,共5页Northern Horticulture

摘　　要：以4种火棘属植物为试材,采用联苯胺-过氧化氢法和TTC法对火棘、全缘火棘、细圆齿火棘与细圆齿火棘细叶变种的柱头可授性和花粉活力分别进行了测定,旨在探讨花龄对火棘花粉活力及柱头可授性变化规律。结果表明：火棘雌雄性器官的育性具有同步性,有利于自然授粉结实;所试材料的花粉活力柱头可授性变化趋势一致,开花后1~2d花粉活力均最强,然后逐渐下降,花粉寿命为5~6d;所试材料均在开花后2~3d内柱头分泌粘液较多,可授性最强,可授期为3~4d;人工辅助授粉花粉收集的最佳时期为花后第1~2天,最佳授粉时期为花后第2~3天。Taking 4 kinds of Pyracantha Roem. as materials, the stigma receptivity and pollen viability of Pyracantha fortuneana,Pyracantha atalantioides, Pyracantha crenulata and Pyracantha crenulata variant were estimated by using benzidine-HzO2 and TTC respectively, in order to discuss change rule of floral stage on pollen viability and stigma receptivity. The results showed that the development of male and female organ was synchronization which was benefit to setting in open pollination. It was the same that the trend of pollen vitality and stigma receptivity among these tested materials. It was about 5--6 days that the longevity of pollen,and the pollen vitality of 1--2 days after flowering was significantly higher than the other days, and then gradually decline. Meanwhile, the stigma receptivity was kept 3- 4 days,and the stigma receptivity of 2--3 days after flowering was significantly higher than the other days for the large amounts of mucus. And the best time of artificial pollination was 2--3 days after flowering,while the best time of pollen collection for artificial pollination was 2--3 days after flowering.

关 键 词：火棘 花龄 柱头可授性 花粉活力 

分 类 号：S687.9[农业科学—观赏园艺]