楸树不同交配组合种子发芽特性的研究  

Study on Seed Germinating Characteristics Among Different Combination of Catalpa bungei

作　　者：王苏珂[1] 王军辉[1] 张守攻[1] 张建国[1] 赵鲲 焦云德 

机构地区：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室 [2]河南省洛阳市林业科学研究所,河南洛阳471002

出　　处：《林业科学研究》2008年第2期275-278,共4页Forest Research

基　　金：国家“十五”科技攻关子课题(2004BA515B0505);“十一五”国家科技支撑计划课题(2006BAD24B08,2006BAD01A1602);国家林业局林木培育实验室基金项目“楸树杂种无性系选择研究”(2005-03)的资助

摘　　要：A mating design,including full-sib and half-sib Catalpa bungei was conducted.The germination ability was studied.The temperature,soaking and lighting time and pretreatment that could influence on Catalpa bungei seed germination were studied.The result showed that the difference of germination rate and energy among different mating combinations was extremely significant.The influence of the individual plant to the germination rate was lower than that of different variety.The germination rate of the combination C.bungei and C.fargesii was always low.The germination rate and energy of two set of reciprocal crosses were very similar.The germination rate was the highest for soaking the seed for 24 hours at a constant temperature of 25 ℃ then germinating it at a changing temperature 20-30 ℃,the difference was remarkable.Another result,an 8-hour-long lighting daily was more advantaged for the germination of the seed than that in a completely dark condition;the germinating rate of the seed stored at a temperature of 5 ℃ for a week after soaking is also much higher than that stored at a low temperature.A mating design,including full-sib and half-sib Catalpa bungei was conducted.The germination ability was studied.The temperature,soaking and lighting time and pretreatment that could influence on Catalpa bungei seed germination were studied.The result showed that the difference of germination rate and energy among different mating combinations was extremely significant.The influence of the individual plant to the germination rate was lower than that of different variety.The germination rate of the combinati...

关 键 词：楸树 交配组合 种子 发芽特性 

分 类 号：S792[农业科学—林木遗传育种]