胡枝子种-种源苗期生长和抗寒性分析  

Analysis of the growth and cold resistance in seedling stage for species-provenances of Lespedeza bicolor

作　　者：董健[1] 尤文忠[1] 陆爱君[1] 吴锈钢[2] 赵杰 徐宝友 

机构地区：[1]辽宁省林业科学研究院,辽宁沈阳110032 [2]辽宁省固沙造林研究所,辽宁阜新123000 [3]铁岭市林木种苗站,辽宁铁岭112000

出　　处：《辽宁林业科技》2006年第4期5-9,共5页Liaoning Forestry Science and Technology

基　　金：国家"948"项目"适于我国西北及干热河谷地区豆科饲料型木本植物引进"(2001-25)部分研究内容

摘　　要：胡枝子是优良的畜牧饲料树种,又是防风固沙的重要树种。从美国和国内河南、河北等地引进的胡枝子种子,在辽宁的铁岭和阜新章古台地区进行了种-种源苗期试验。方差分析表明,不同种源间生长量和生物量存在显著差异。铁岭试验点,5#、13#、1#和3#种源,苗高遗传力为36.3%,遗传增益为10.8%;地径相应为80.0%和27.3%。章古台试验点,7#种源,苗高遗传力为26.7%,遗传增益为12.3%,但由于树干受冻害严重,尚待观察。2个地点综合分析检验结果,5#、3#1、3#属优良种源。同时,对选择的种源进行了生长节律分析,直接引种这些优良种源造林可获得显著的增产效益。美国短梗胡枝子是在辽宁有发展前途的优良树种,美国二色胡枝子虽然在章古台生长优良,但冻干害严重,而美国美丽胡枝子在辽宁生长不佳。Lespedeza bicolor is not only a kind of feeding tree species, but also an important tree species for anti - wind and fixing sand. By introducing provenances of Lespedeza bicolor from Henan and Hebei province, Inner Mongolia Autonomous Region and the United States, the seedling trials of species - provenances were conducted in Tiding and Fuxin city in Liaoning province. The results showed that： by selecting fine provenances of No.5, 13, 1 and 3 in Tieling trial, the heritability of seedling＇s height and basal diameter were 36.3% and 80.0% respectively, and the genetic gain of seedling＇s height and basal diameter were 10.8% and 27.3% respectively. In Fuxin trial, by selecting fine provenance of No.7, the heritability and the genetic gain of seedling＇ s height were 26.7% and 12.3% respectively. The results need further study for serious winter harm in stem. The provenances of No.5, 3 and 13 were proved the fine by combining the results of two plots. Furthermore, the growing rhythms of fine provenances were clarified. Significant benefits could be obtained in production increment by introducing the fine provenances directly. American shot- peduncle lespedeza was proved a promising fine tree species in Liaoning province. On the contrary, American bicolor lespedeza and American thunberg lespedeza showed bad growth.

关 键 词：胡枝子 引种 种-种源 苗期测定 

分 类 号：S722.7[农业科学—林木遗传育种]