Gan, Youmin

Liu, Xia

Peng, Yan

Qiu, Ying

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Characteristics and Turf Quality Traits of Native Poa pratensisin Humid Subtropical Sichuan Yan Peng Sichuan Agricultural University, China Ying Qiu Sichuan Agricultural University, China Youmin Gan Sichuan Agricultural University, China Xia Liu Sichuan Agricultural University, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/11-1/4 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 ]294　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems— Amenity and Conservation Turf and Turf‐grassCharacteristics and turf quality traits of native Poa pratensis in humid subtropical SichuanY an Peng , Y ing Qiu , Youmin Gan , X ia L iuDepartment o f G rassland Science , S ichuan A gricultural University , Y aan 625014 , China , E‐mail : pengyanlee＠ 163 .comKey words : grow th characteristics ,turf quality ,poa pratensis ,subtropical humid areaIntroduction Poa p ratensis L ( Kentucky bluegrass) is a widely used cool‐season turfgrass because of its beautiful , lush , andfinely tex ture and appearance . It is primarily distributed in the north and southwest of China , mainly occurring in alpine andsub‐alpine grassland ( Peng et al . , ２００５ ) .Materials and methods Thirteen accessions collected were ０５p０１ , ０５p０２ , ０５p０３ , ０５p０４ ,０５p０５ , ０５p０６ , ０５p０７ , ０５p０８ formGanzi and ０５p１０ , ０５p１３ , ０５p１４ , ０５p１５ from A�ba in Sichuan , and ０５p１６ f rom Gansu in China , respectively , commercialvarieties �Midnight�and�Baron�were used as controls . The experiment was conducted from ２００５ ～ ２００７ at the ExperimentalStation of Sichuan Agricultural University representing a sub‐tropical humid climate , rich in rainfall and acid purple soil of goodfertility . A randomized complete block design was employed with three replications in ２ m × １m plots for ２００ single plantstransplanted at a density of １０ cm × １０ cm for each plot . T raits investigated included grow th rate , tillers , and numbers , lengthand diameter of rhizomes . Turfgrass performance was estimated by establishment rate , color , density , texture , uniformity ,green duration , rust disease resistance and heat resistance once per month all the year .Results (１) After transplanted , all accessions had a ９０％ survival rate . ( ２ ) In growing period the highest grow th rate ofaboveground culm was ３ .９８mm/d of ０５p１３ , whereas the lowest was ０ .１２ mm/d only with ０５p０６ ; the total tillers of per plantranged from ３８ to １６１ .３３ in different materials , with an average of ８２ .６２ . (３) The rhizome number ranged from１５ .３３ to ５８ .００ per plant , diameter from ０ .３８ mm to １ .２９ mm , averaged ０ .８９ mm , and length from ３ .２７ cm from ８ .２７ cm , averaged ５ .９３cm respectively . Based on the rhizome characteristics , the １５ materials were divided into three types . The first group included０５P０１ , ０５P０６ , ０５P０８ , ０５P１０ , ０５P１３ , ０５P１５ and ０５P１６ , which had the most , the longest and strong rhizome , the rhizomenumber , rhizome length , rhizome diameter averaged ４４ .３３ , ６ .７０cm and １ .１４mm respectively ; the second group consisted of０５P０３ 、０５P０４ 、０５P０５ 、０５P０７ 、０５P１４ 、CK１ and CK２ , averaged ４１ .６７ , ５ .５３ cm and ０ .７２ mm respectively ; the third one wascomposed of ０５p０２ only , which had the least values １５ .３３ , ３ .７２ cm and ０ .３８ mm respectively . ( ４ ) The establishing rateswere from ５８d to ８１d . (５ ) The results of comprehensive evaluation for different materials indicated that CK１ and ０５P０４ hadthe highest score , which were blue‐green , high density , good uniformity , good rust disease and heat resistance ; ０５P０３ and０５P０６ were in second rank ; The moderate was ０５P０１ , ０５P１０ , ０５P１３ , ０５P１４ and ０５P１５ ; ０５P０２ and ０５P０７ were the worstbecause of their rust disease susceptibility and low heat resistance .Conclusions According to grow th characteristics and turfgrass performance , ０５P０４ and CK１ were more adapted to subtropicalhumid areas than other materials . By the relationships of turf quality , occurrence of rust disease and environment indices , it isconcluded that due to high temperature and humidity in summer rust disease was an important factor which resulted in poor turfquality of native P . p ratensis .ReferencePeng , Y . , Zhang , X .Q , Zhou , S . R . ２００５ . Advances in researches of turfgrass germplasm resources in China . A ctaHorticulturae Sinica , ３２ : ３５９ ～ ３６４ .

Characteristics and Turf Quality Traits of Native \u3cem\u3ePoa pratensisin\u3c/em\u3e Humid Subtropical Sichuan

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=3163&amp;context=igc

Characteristics and Turf Quality Traits of Native \u3cem\u3ePoa pratensisin\u3c/em\u3e Humid Subtropical Sichuan

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