南京林业大学学报(自然科学版) ›› 2007, Vol. 31 ›› Issue (01): 27-30.doi: 10.3969/j.jssn.1000-2006.2007.01.007

• 研究论文 • 上一篇    下一篇

西南桦不同种源外植体组织培养技术

陈伟1,施季森1,陈金慧1,汪长水2,刘希华3   

  1. 1.国家林业局、江苏省林木遗传和基因工程重点试验室南京林业大学, 江苏 南京 210037; 2.福建省林业科技试验中心, 福建 南靖 363600; 3.福建农林大学三明学院, 福建 三明 365004
  • 出版日期:2007-02-18 发布日期:2007-02-18

Effects of Different Tissue Culture Mediums on Clones Selected from Betula alnoides Provenances

CHEN Wei1, SHI Jisen1*, CHEN Jin-hui1, WANG Chang-shui2, LIU Xi-hua3   

  1. 1. The Key Laboratory of Forest Genetics and Gene Engineering of the State Forestry Administration and Jiangsu Province Nanjing Forestry University. Nanjing, 210037 China; 2.Fujian Provincial Forestry Research Center. Nanjing 363600, China; 3.Sanming College Fujian Agriculture and Forestry University, Sanming 365004. China
  • Online:2007-02-18 Published:2007-02-18

摘要: <正>采用盆栽试验和光合测定的方法,以湿地松普通种子为对照(CK),测定了7个湿地松优良半同胞家系在弱度水分胁迫(土壤相对含水量为55%~60%)、中度水分胁迫(土壤相对分水量为35%~40%)和强度水分胁迫(土壤相对含水量为20%~25%)条件下的净光合速率(Pn)、气孔导度(Cond)、胞间CO!浓度(Ci)、蒸腾速率(Tr)、水分利用效率(WUE)、表观量子效率(φc)和被化效率(CE)等光合特性。实验得知,湿地松光合特性对水分胁迫的响应规律是:各家系的Pn、Cond、Ci、Tr、φc,CE随水分胁迫程度的加深而下降,其中Pn、Ci、CE几乎呈直线下降,各家系的WUE随着水分胁迫的加深先上升,至中度胁迫后下降,Cond、Tr在强度胁迫时趋近于0。不同程度水分胁迫下,不同家系光合特征不同,湿地松半同胞家系的光合特征值明显大于对照,是湿地松各家系生长快、产量高的主要生理原因。

Abstract: Betula alnoides is one of the fast growing and high quality timber production tree spices in southern China, but short of genetic improved planting materials supplying. We presented a series of research results of culture mediums difference to induction, multiplication and rooting ability, by seven clones selected from B. alnoides provenances testing plantation. The result indicated that when choosing the second, and the third buds against shoot tip, as explants, have had a highest sprouting rate cultured on B5 medium with the NAA (0.05mg/L). For multiplication, the best medium improved MS1, and for rooting was 1/3MS with IBA(1.0mg/L)+ABT(0.2mg/L)+NAA(0.2mg/L) medium. Among the different clones, clone M16 was the best responding one to the culture medium, however, such a relationship between tissue culture performance and growth still needs to be carefully investigated.

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