用微信扫码二维码

分享至好友和朋友圈

WE ARE COMMITTED TO REPORTING THE LATEST FORESTRY ACADEMIC ACHIEVEMENTS

袁莲珍, 杨斌, 刘际梅, 等. 外源植物激素对杉木种子萌发及苗木生长的影响[J]. 四川林业科技, 2020, 41(6): 75−79. DOI: 10.12172/202006220001
引用本文: 袁莲珍, 杨斌, 刘际梅, 等. 外源植物激素对杉木种子萌发及苗木生长的影响[J]. 四川林业科技, 2020, 41(6): 75−79. DOI: 10.12172/202006220001
Yuan L Z, Yang B, Liu J M, et al. Effects of exogenous hormones on the germination and seedling growth of Cunninghamia lanceolata [J]. Journal of Sichuan Forestry Science and Technology, 2020, 41(6): 75−79. DOI: 10.12172/202006220001
Citation: Yuan L Z, Yang B, Liu J M, et al. Effects of exogenous hormones on the germination and seedling growth of Cunninghamia lanceolata [J]. Journal of Sichuan Forestry Science and Technology, 2020, 41(6): 75−79. DOI: 10.12172/202006220001

外源植物激素对杉木种子萌发及苗木生长的影响

Effects of Exogenous Hormones on the Germination and Seedling Growth of Cunninghamia lanceolata

  • 摘要: 以杉木种子为供试材料,分别用吲哚丁酸(IBA)、赤霉素(GA3)、6-苄基腺嘌呤(6-BA)和脱落酸(ABA)的50、100、150、200、300 mg/L的5个浓度水平进行浸种0.5 h、1 h、2 h处理,测定其种子发芽率、发芽势和幼苗生长。结果表明:(1)不同浓度外源植物激素、不同浸泡时间对杉木种子萌发呈极显著差异。GA3在浓度100 mg/L、浸种1 h的处理中,杉木种子发芽率最高为94.7%,发芽势为55.3%。(2)外源植物激素不同浸泡时间的处理对杉木苗生长没有差异,不同浓度处理呈显著差异。吲哚丁酸(IBA)、赤霉素(GA3)、6-苄基腺嘌呤(6-BA)的不同浓度促进杉木苗高、地径生长;脱落酸(ABA)的不同浓度处理则促进杉木苗根的生长。

     

    Abstract: Cunninghamia lanceolata seeds were selected as the study material. The seeds were soaked for 0.5 h, 1 h and 2 h with five concentrations (50, 100, 150, 200 and 300 mg/L) of IBA, GA3, 6-BA and ABA (50, 100, 150, 200 and 300 mg/L), respectively, and the seed germination rate, germination potential and seedling growth were determined. The results showed that: (1) Different concentrations of exogenous plant hormones and different soaking times had significnat differences on seed germination. The highest germination rate was 94.7% and the highest germination potential was 55.3% when GA3 concentration was 100 mg/L and soaking time was 1 h. (2) There were no differences in the seedling growth under different soaking times of exogenous plant hormones, however, there were significant differences in different concentrations. Different concentrations of IBA, GA3 and 6-BA promoted the growths of seedling height and diameter of Cunninghamia lanceolata, and different concentrations of ABA promoted the roots growth.

     

/

返回文章
返回