板栗雄性不育的形态学观察  

Morphological Observation on Male Sterility in Castanea mollissima Blume

作　　者：刘国彬[1] 曹均[1] 周连第[1] 兰卫宗[1] 兰彦平[1] 

机构地区：[1]北京市农林科学院农业综合发展研究所,北京100097

出　　处：《西南农业学报》2014年第1期235-239,共5页Southwest China Journal of Agricultural Sciences

基　　金：国家林业局公益行业专项(201104025);北京市农林科学院科技创新能力建设专项(KJCX201101011);华北山区经济树种种质资源收集和保存(2013FY111700)

摘　　要：为揭示不完全雄花败育资源板栗雄性不育1号(Cms-1)的形态学特征,本文从形态观察、花粉萌发率测定和解剖分析等方面进行了研究。结果表明:①Cms-1雄花序上部败育,下部雄花发育正常且具有一定的萌发率(24.5%);②解剖发现,Cms-1花粉发育经历了雄花序原基形成期、雄花簇原基形成期、花朵原基形成期和雄蕊形成期,之后发育停止,花序轴维管束细胞破解,维管束收缩,进而雄花败育,因此推断Cms-1败育与维管束发育异常有关,其败育主要发生在雄蕊分化期阶段,处于孢原细胞分化和造孢细胞形成前期。雄花败育的自然特性使Cms-1在板栗杂交育种中具有独特的应用价值。In order to reveal the morphological characteristics of Cms-1,an incomplete male sterile germplasm was studied based on morphology investigation,test of pollen germination rate and anatomy study.The result showed that,（i） the upper part of male inflorescence on Cms1 were sterne,but the lower part had a certain pollen germination（24.5 ％） ; （ii） Anatomy study showed that,after formation of the primordium of the maleinflorescence,the floral cluster,the individual floret and the stamen,the devdopment of male inflorescence stopped; rachis vascular destroyed and shrinkage,and then the male inflorescence aborted,so the vascular development and the male sterility of Cms1 were co-related,and the main sterile stage was differentiation of stamen and the mail period were differentiation of archesporal cell and previous of sporogenous cell formation.The male inflorescence abottion of Cms-1 make it play an very important role in hybddization.

关 键 词：板栗 种质 雄花序 败育 形态学 

分 类 号：S664.2[农业科学—果树学]