Zhang, Jinpeng

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University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Study on Root System Morphology of Creeping‐Rooted Alfalfa and Related Analysis of Soil Physical Factor Jinpeng Zhang Beijing Forestry 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/21/3-2/50 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. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　 瞯 ]533　 瞯Grasslands/Rangelands Resources and Ecology ——— Soil‐Plant‐Animal InterrelationshipsStudy on root system morphology of creeping‐rooted alfalfa and related analysis of soil physicalfactorZHA NG Jin‐pengCollege o f Tur f grass and G rassland Science , Bei j ing Forestry University 100083 China .E‐mail :zoho1984＠ 163 .comKey words :Creeping‐rooted alfalfa ,root system morphology ,soil physical factorIntroduction Creeping‐rooted character was very important for breeding and selection of the new variety of creeping‐rooted andgrazing alfalfa . In this paper , the author discussed the ontogenesis of creeping‐rooted character and its performance in the BFUgrassland experimental land . Through the research on effects of physiological and ecological factors of creeping‐rooted Alfalfa ,the influence of physiological and ecological effects on the performance of creeping‐rooted character could be analysed .Materials and methods The materials come from our experiment lands which is in Shunyi of Beijing , seeded on May ２００４ ,including three grazing‐type alfalfa , that is creeping‐rooted material , main‐rooted materical , side‐rooted materical . Thevarieties of alfalfa includes T ravois ,Zhongmu No .１ ,Grassland No .２ ,Baoding alfalfa ,Kazakhstan wild alfalfa . The methodsmainly focus on three points :the plants modality survey , the plants root system survey ,the soil condition survey . The plantsmodality survey includes plant height , material expansion , cluster quantity , branches quantity ; and plants root system surveyfocus on the root expansion ,the stem primordial ; The soil condition datas were collected by three level :０‐１０cm ,１０‐２０cm ,２０‐３０cm .the datas are deal with the multianalysis ,including square error analysis , simple factor analysis variance four groupdatas ,correlative coefficient matrix and so on .Results The results of these studies were as follows : the underground horizontal root of creeping‐rooted alfalfa could form rootexpansion part and stem primordia on the root through whole grow th season . The appearance of creeping‐rooted plant wasbetter during the second and third years than during the first and later of the fourth year in the creeping‐rooted varieties . Thedevelopment of creeping‐rooted seedlings and the range of expansion of root turion node were influenced by marginal effect . Thepercentage of creeping‐rooted plant was a little higher in marginal rows than in inner rows , and the range of expansion ofcreeping‐rooted seedlings was obviously larger in marginal rows than that in inner rows .Compared with the other materials ,theexpansion of horizontal roots of the creeping‐rooted alfalfa are ３０％ farther than the side‐rooter material , but not better on theindex of plant height and branches quantity which are compared with the side‐rooted material and the main‐rooted material .Compared with the １０‐２０cm level ,under the ０‐１０cm level the root diameter are bigger both the horizontal roots and the verticalroots . Under the ０‐１０cm level , the vertical root diameter of main‐rooted material ＞ the vertical root diameter of side‐rootedmaterial ＞ the vertical root diameter of creeping‐rooted materical . Soil condition has a great influence on the development ofcreeping‐rooted alfalfa , especially on the index of soil moisture . The weight content of CR and NCR are similar , the creeping‐rooted alfalfa has a strong tolerance to the stiff environment .ReferenceGao Zhensheng , Wang Pei , Hong Fuzeng . Studies on Ontogonesis and Ecological Adaptability of Creeping‐rooted Character ofAlfalfa ( Medicago media Pers .) ,Acta Agrestia Sinica .Supported by MOST :２００６BAD０１A１９ , ２００６BAD０４A０４MOE :２００６００２２０１１

Study on Root System Morphology of Creeping‐Rooted Alfalfa and Related Analysis of Soil Physical Factor

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=2792&amp;context=igc

Study on Root System Morphology of Creeping‐Rooted Alfalfa and Related Analysis of Soil Physical Factor

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