Study on Rhizomes Extensibility of 11 Wild Kentucky Bluegrass Collected in Gansu Province

doi:10.11733/j.issn.1007-0435.2019.05.018

Acta Agrestia Sinica ›› 2019, Vol. 27 ›› Issue (5): 1250-1258.DOI: 10.11733/j.issn.1007-0435.2019.05.018

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Study on Rhizomes Extensibility of 11 Wild Kentucky Bluegrass Collected in Gansu Province

CHEN Run-juan^1,2, BAI Xiao-ming¹, ZHENG Wen-bo¹, GUO Xiao¹, HUANG Qi¹, LI Chang-ning¹, Lu Ni¹

1. College of Grassland Science, Gansu Agricultural University/Key Laboratory of Grassland Ecosystem, Ministry of Education/Pratacultural Engineering Laboratory of Gansu Province/Sino-U. S. Centers for Grazingland Ecosystem Sustainability, Lanzhou, Gansu Province 730070, China;
2. Lingtai County Natural Resources Bureau of Gansu Province, Lingtai, Gansu Province 744400, China

Received:2019-09-01 Revised:2019-09-20 Online:2019-10-15 Published:2019-11-09

甘肃地区11个野生草地早熟禾材料根茎扩展性研究

陈润娟^1,2, 白小明¹, 郑文博¹, 郭宵¹, 黄琪¹, 李昌宁¹, 卢妮¹

1. 甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中美草地畜牧业可持续发展研究中心, 甘肃兰州 730070;
2. 甘肃省灵台县自然资源局, 甘肃灵台 744400

通讯作者: 白小明
作者简介:陈润娟(1990-),女,甘肃灵台人,硕士研究生,主要从事草坪科学研究,E-mail:353362662@qq.com
基金资助:
国家自然科学基金（31560667）资助

Abstract

Abstract: In order to select Kentucky bluegrass (Poa pratensis) with strong rhizomatous expansion ability,a pot experiment was conducted to investigate the extensibility of wild Poa pratensis from 11 different habitats in Gansu Province. The results showed that among the 11 tested materials,Poa pratensis (Sunan) had the highest tiller number,Poa pratensis (Yuzhong) had the largest rhizome extension distance,aboveground plant volume,rhizome plant number,rhizome volume,rhizome surface area,the longest rhizome diameter and stem length,Midnight Poa pratensis had the largest coverage area per plant and rhizome number. Aboveground expansion is proportional to underground expansion. The order of the rhizome extensibility of the studied wild grasses was:Poa pratensis (Yuzhong) > Midnight Poa pratensis > Poa pratensis(Qinzhou) > Poa pratensis(Sunan) > Poa pratensis (Qingshui) > Poa pratensis (Lingtai) > Poa pratensis (Weiyuan) > Poa pratensis (Kangle) > Poa pratensis (Xihe) > Poa pratensis (Tianzhu) > Poa pratensis (Xiahe) > Poa pratensis (Anding).

Key words: Poa pratensis L., Aboveground expansion, Rhizome expansion, Grey relational analysis

摘要： 本试验采用盆栽单株种植方式，对甘肃境内11个不同生境野生草地早熟禾（Poa pratensis）的根茎扩展性进行了比较研究，以期筛选出根茎扩展能力强的材料。结果表明，供试材料中，草地早熟禾（肃南）单株分蘖数最多；草地早熟禾（榆中）根茎扩展距离、地上植物量、根茎植物量、根茎直径、根茎体积和根茎表面积最大，茎节最长；午夜草地早熟禾单株覆盖面积最大、根茎数量最多。地上扩展性与地下扩展性成显著正相关；根茎综合扩展性强弱依次为：草地早熟禾（榆中） > 午夜草地早熟禾 > 草地早熟禾（秦州） > 草地早熟禾（肃南） > 草地早熟禾（清水） > 草地早熟禾（灵台） > 草地早熟禾（渭源） > 草地早熟禾（康乐） > 草地早熟禾（西和） > 草地早熟禾（天祝） > 草地早熟禾（夏河） > 草地早熟禾（安定）。

关键词: 草地早熟禾, 地上扩展性, 根茎扩展性, 灰色关联度

CLC Number:

S544

CHEN Run-juan, BAI Xiao-ming, ZHENG Wen-bo, GUO Xiao, HUANG Qi, LI Chang-ning, Lu Ni. Study on Rhizomes Extensibility of 11 Wild Kentucky Bluegrass Collected in Gansu Province[J]. Acta Agrestia Sinica, 2019, 27(5): 1250-1258.

陈润娟, 白小明, 郑文博, 郭宵, 黄琪, 李昌宁, 卢妮. 甘肃地区11个野生草地早熟禾材料根茎扩展性研究[J]. 草地学报, 2019, 27(5): 1250-1258.

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Study on Rhizomes Extensibility of 11 Wild Kentucky Bluegrass Collected in Gansu Province

甘肃地区11个野生草地早熟禾材料根茎扩展性研究

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