摘要
以多年生黑麦草品种Neruda和日本结缕草品种Zenith的种子为材料,用0、150、250和350 mg/L 4种浓度乙烯利溶液进行浸种处理后,测定了种子萌发指标(发芽率、发芽势、发芽指数、活力指数)和幼苗生长指标(根鲜重、苗鲜重、苗长、根长、根冠比)。结果表明:两种草坪草对乙烯利处理浓度的响应模式不同,能够提高多年生黑麦草和日本结缕草种子发芽率、发芽势、发芽指数和活力指数的乙烯利浓度分别是250、350 mg/L。与对照相比,250 mg/L乙烯利处理可促进多年生黑麦草苗、根的平均长度,并提高多年生黑麦草幼苗的根冠比;150 mg/L乙烯利处理可以提高日本结缕草幼苗的根冠比;350 mg/L处理可提高多年生黑麦草与日本结缕草的苗长。
In this study,seeds of perennial ryegrass cultivar’Neruda’and zoysiagrass cultivar’Zenith’were used as materials.After being soaked in four concentrations of ethephon solution:0,150,250,and 350 mg/L,the seed germination indexes(germination rate,germination potential,germination index,and vigor index)and indexes of seedings growth(root fresh weight,seedling fresh weight,seedling length,root length,and root-shoot ratio)were investigated and analyzed.The results showed that the response patterns of two turfgrass to ethephon treatment were different,250 and 350 mg/L ethephon treatment increased the germination rate,germination potential,germination index,and vigor index of perennial ryegrass and zoysiagrass seeds respectively.Compared with the control,ethephon treatment at 250 mg/L could increase the average length of seedling and root in perennial ryegrass,and also the root-shoot ratio;ethephon treatment at 150 mg/L could increase the root-shoot ratio of zoysiagrass seedlings;350 mg/L treatment increased the seeding length of perennial ryegrass and zoysiagrass.The effect of higher concentration of ethephon treatment on the related indexes of two turfgrass species needs further study.
作者
程锦
单旭东
李丽菁
高娅楠
张智韦
许立新
CHENG Jin;SHAN Xu-dong;LI Li-jing;GAO Ya-nan;ZHANG Zhi-wei;XU Li-xin(College of Grassland Science,Beijing Forestry University,Beijing 100083,China)
出处
《草原与草坪》
CAS
CSCD
2020年第4期61-66,共6页
Grassland and Turf
基金
中央高校基本科研业务费专项资金资助(2020CXY001)。
关键词
草坪草
乙烯利
浸种
种子萌发
幼苗生长
turfgrass
ethephon
seed-soaking
seed germination
seedlings growth
