不同栽培基质、不同浓度GA_3和PEG溶液处理对石刁柏种子发芽的影响  

Effect of Different Culture Substrates,Different Concentrations of GA_3 and PEG on the Germination Characteristics of Asparagus officinalis

作　　者：杨春雪[1] 李丽丽[1] 田波林 

机构地区：[1]东北林业大学园林学院,黑龙江哈尔滨150040 [2]吴忠市同心县国税局,宁夏吴忠751300

出　　处：《北方园艺》2015年第5期1-5,共5页Northern Horticulture

基　　金：中央高校基本科研业务费专项资金资助项目(DL10BA15);哈尔滨市科技创新人才研究专项资金资助项目(RC2011QN002041)

摘　　要：以石刁柏种子为试材,在恒温25℃,光照强度3 000lx,相对湿度66%的条件下,以累计发芽率、发芽势、发芽指数等为指标,探讨了不同栽培基质、不同浓度GA3和PEG溶液处理对石刁柏种子发芽的影响。结果表明:不同栽培基质对石刁柏种子芽率影响不大,但却对胚根长度有一定的影响,3种不同基质中胚根长度的排序为沙子>珍珠岩∶蛭石=1∶1>蒸馏水;石刁柏种子发芽率、发芽势和活力指数在GA3溶液浓度为50mg/L时最高,其发芽指数与GA3浓度呈负相关;石刁柏种子发芽率与PEG浓度呈负相关,发芽势及胚根长度随PEG浓度增加先增加后降低,在PEG浓度为2.5%时达到最高。Taking seeds of Asparagus officinalis as materials, different culture substrates, different concentrations of GA3 and PEG were settled respectively in the experiment with the condition of 25℃, light intensity 3 000 lx and relative humidity 66 %, in order to explore their effect on germination characteristics of Asparagus officinalis through the method of calculating the accumulated germination rate, germination energy and germination index, etc. The results showed that different culture substrates had little effect on the germination rate,but had a certain effect on the length of the radicle, the order was sand~ perlite and vermiculite each 50% 〉 distilled water; the germination rate, germination energy and vigor index were the highest when the concentration of GA3 was 50 rng/L,and the germination index had negative correlation with the concentration of GA3 ;the germination rate had negative correlation with the concentration of PEG^the germination energy and the length of the radicle increased firstly and decreased later with the concentration increased of PEG^and they were the highest at the concentration of 2. 5%.

关 键 词：石刁柏 种子 栽培基质 GA3 PEG 发芽特性 

分 类 号：S644.604.1[农业科学—蔬菜学]