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地被菊柱头可授性
引用本文:杨中义,尚嘉琪,张春来,吕晋慧.地被菊柱头可授性[J].东北林业大学学报,2018(3):50-53.
作者姓名:杨中义  尚嘉琪  张春来  吕晋慧
作者单位:山西农业大学,太谷,030801
基金项目:国家"十二五"科技支撑计划课题,国家自然科学基金项目
摘    要:为探寻提高地被菊杂交结实率的有效方法,对多个地被菊品种柱头形态及可授性进行研究,比较了不同花序发育阶段的持续时间及柱头形态,不同形态柱头可授性差异以及1 d中不同时间段柱头可授性差异。结果表明:按发育顺序菊花花序分为8个阶段,其中第1、2阶段,持续3~7 d,柱头呈I型;3、4阶段,持续2~9 d,柱头呈I型或Y型;5、6、7阶段,柱头呈I型、Y型、羊角型和衰败型多种形态;第8阶段,柱头衰老状态明显呈羊角型或衰败型。柱头Y型时,可授性最强,衰败型时,可授性弱或没有。不同品种柱头可授性差异明显。1 d中10:00—14:00柱头可授性最强。因此,选择晴天10:00—14:00对Y型柱头授粉可有效提高地被菊杂交结实率。

关 键 词:地被菊  柱头可授性  联苯胺-过氧化氢法  Chrysant  hemum  morifoli  um  Stigma  receptivity  Benzidine-hydrogen  peroxide

Stigma Receptivity of Chrysanthemum morifolium
Yang Zhongyi,Shang Jiaqi,Zhang Chunlai,Lü Jinhui.Stigma Receptivity of Chrysanthemum morifolium[J].Journal of Northeast Forestry University,2018(3):50-53.
Authors:Yang Zhongyi  Shang Jiaqi  Zhang Chunlai  Lü Jinhui
Abstract:In order to explore effective ways to improve the seed setting rate of hybridization,Chrysanthemum morifolium stigma form and receptivity were studied by a plurality of chrysanthemum species.The stigmatic morphology and sustainable time in different flowering stages,stigma receptivity of different forms and different times during one day were compared.Ac-cording to the development process of chrysanthemum, the inflorescence development sequence can be divided into eight stages.Among them,the flowering stages of 1 and 2 continued for 4-6 d,and stigmas were I type;the stages of 3 and 4 continued 3-9 d,and stigmas were I type and Y type;at the 5,6,7stages,stigmas had a variety of forms,including I, Y,horns and wilt type;at the 8 stage,stigmas senescence was obviously,including horns and wilt type.The receptivity was the strongest when stigma was Y type,and it was weak or not when wilt type.The receptivity of different species was different.And it was the strongest at 10:00-14:00 during one day.So the seed setting rate of hybridization was improved by pollinating stigmas of Y type at 10:00-14:00 on sunny days.
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