竹节草种质资源抗寒性初步评价研究
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摘要
以85份竹节草种质资源为材料,利用2014年和2015年观测的叶片电导率、田间枯黄率和形态数据为指标进行抗寒性分析。结果表明:不同竹节草种质资源间抗寒性达极显著相关(p<0.01),在一定程度范围内,植株密度越大,叶片宽度越大,坪用质量越高,则电导率越小,抗寒性越强。相关性分析结果表明,竹节草的叶片电导率和田间枯黄率与外部形态指标间存在极显著相关(p<0.01),相关系数最高达到0.867。竹节草抗寒性与植株密度、叶宽、坪用质量呈显著相关(p<0.05)。本研究为进一步开展竹节草优异种质选育提供理论依据。
The cold resistance of Eighty-five Chrysopogon aciculatus(Retz.) Trin accessions were evaluated based on conductivity, leaf yellow rate and morphological characteristics. The results showed different C. aciculatus accessions were of extremely significant level(p<0.01). Within a certain degree, larger plant density led to wider leaf, and greater flat with higher quality resulted in smaller conductivity and stronger cold hardiness. There was extremely related(p<0.01) among conductivity, leaf yellow rate and morphological characteristics and the highest correlation index was 0.867. This study would provide a theoretical basis for the further development of excellent C. aciculatus accessions.
The cold resistance of Eighty-five Chrysopogon aciculatus(Retz.) Trin accessions were evaluated based on conductivity, leaf yellow rate and morphological characteristics. The results showed different C. aciculatus accessions were of extremely significant level(p<0.01). Within a certain degree, larger plant density led to wider leaf, and greater flat with higher quality resulted in smaller conductivity and stronger cold hardiness. There was extremely related(p<0.01) among conductivity, leaf yellow rate and morphological characteristics and the highest correlation index was 0.867. This study would provide a theoretical basis for the further development of excellent C. aciculatus accessions.
引文
[1]郑玉忠,徐嘉宾,杨中艺,等.中国竹节草野生种质资源调查及生物学特性研究[J].草业学报,2005,14(3):117-122..
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[8]林艳,郭伟珍,徐振华,等.大叶女贞抗寒性及冬季叶片电导率变化的研究[J].天津农业科学,2012,18(5):145-149.
[9]廖丽,张静,吴东德,等.竹节草种质资源耐盐性初步评价[J].热带作物学报,2014,35(10):1 905-1 911.
[10]王晓玲,胡亚岚,毛丽衡,等.不同枣品种抗寒性的比较[J].北方园艺,2012,19:1-4.
[11]Subba R C,Raju N S N,Subba R M V.Pollination and seed set in tropical wetland grasses[J].Nordic Journal of Botany,2010,28(3):354-365.
[2]廖丽,王志勇,白昌军,等.竹节草种质资源形态多样性研究究[J].热带作物学报,2011,32(11):2 042-2 047.
[3]王鹏良,徐洋,吕智鹏,等.假俭草杂种F1抗寒性遗传分析[J].草业学报,2011,20(2):290-294.
[4]刘世忠,夏汉平,蔡锡安,等.不同水肥处理对三种草坪草延迟冬绿期效果比较[J].中国草地,2002,24(4):25-30.
[5]刘建秀,刘永东,贺善安,等.中国暖季型草坪草物种多样性及其地理分布特点[J].草地学报,1998,6(1):45-52.
[6]刘琳,毛凯,干友民,等.暖地型草坪草抗寒性的研究概况[J].草原与草坪,2004(1):8-14.
[7]刘建秀.草坪坪用价值综合评价体系的探讨I.评价体系的建立[J].中国草地,1998(1):44-47.
[8]林艳,郭伟珍,徐振华,等.大叶女贞抗寒性及冬季叶片电导率变化的研究[J].天津农业科学,2012,18(5):145-149.
[9]廖丽,张静,吴东德,等.竹节草种质资源耐盐性初步评价[J].热带作物学报,2014,35(10):1 905-1 911.
[10]王晓玲,胡亚岚,毛丽衡,等.不同枣品种抗寒性的比较[J].北方园艺,2012,19:1-4.
[11]Subba R C,Raju N S N,Subba R M V.Pollination and seed set in tropical wetland grasses[J].Nordic Journal of Botany,2010,28(3):354-365.