Study on the Adaptability of Alfalfa Cultivars with Different Fall Dormancy Rates in Guizhou Area

doi:10.11733/j.issn.1007-0435.2011.02.011

›› 2011, Vol. 19 ›› Issue (2): 242-246.DOI: 10.11733/j.issn.1007-0435.2011.02.011

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Study on the Adaptability of Alfalfa Cultivars with Different Fall Dormancy Rates in Guizhou Area

XU Dai-wei¹, YAO Chun-yan¹, MO Ben-tian², LU Xin-shi¹

1. Lab of Rangeland Resources and Ecology, Beijing Forestry University, Beijing 100083, China;
2. Guizhou Provincial Institute of Pratacultural Science, Dushan, Guizhou Province 558200, China

Received:2010-01-17 Revised:2010-12-06 Online:2011-04-15 Published:2011-04-15

不同秋眠级苜蓿品种在贵州的适应性研究

徐大伟¹, 姚春艳¹, 莫本田², 卢欣石¹

1. 北京林业大学草地资源与生态实验室, 北京, 100083;
2. 贵州省草业研究所, 贵州, 独山, 558200

通讯作者: 卢欣石,E-mail:luxinshi304@126.com
作者简介:徐大伟(1986- ),男,安徽庐江人,硕士研究生,主要从事苜蓿秋眠性研究,E-mail:418xdw@163.com
基金资助:
国家科技支撑“牧草育种技术研究及产业开发”项目(2008BADB3B);“优质抗逆专用草新品种选育”课题(2006BAD01A19)资助

Abstract

Abstract: Eleven different American fall-dormancy alfalfa cultivars were studied for fall-dormancy rates relative to their growth of nine agronomic traits.Results showed that fall-dormancy rate has a significantly positive correlation with leaf length,leaf width,leaf area and summer survival rate of alfalfa in Guizhou area with correlation coefficients of 0.907,0.901,0.947,0.772 respectively.There are positive correlations with annual yield and root dry weight(correlation coefficient of 0.611 and 0.637),accompanied by a significant negative correlation with stem-leaf ratio(correlation coefficient of-0.667).The cultivar Dona Ana,Pierce,CUF 101 and UC-1887 exhibited better adaptability than other cultivars in growth of both aboveground and underground.The suitable fall dormancy rate for Guizhou area is 7-10.

Key words: Medicago sativa L., Fall dormancy rate, Adaptability

摘要： 对美国11个秋眠级苜蓿(Medicago sativa L.)品种地上、地下部生长表现和9个农艺性状进行对比研究及相关性分析。结果表明:不同秋眠级苜蓿品种在贵州地区生长中,受秋眠级直接影响的性状有叶长、叶宽、叶面积、越夏率,均呈极显著正相关(P<0.01),相关系数分别为0.907,0.901,0.947,0.772;与年产量、根干重呈正相关,相关系数分别为0.611,0.637;与茎叶比呈显著负相关(P<0.05),相关系数分别为-0.667;Dona Ana,Pierce,CUF101和UC-1887在地上、地下部生长表现较其他品种具有优势,整体适应性较好,在贵州地区适宜推广和种植的苜蓿品种秋眠级为7~10。

关键词: 苜蓿, 秋眠级, 适应性

CLC Number:

Q948.12

XU Dai-wei, YAO Chun-yan, MO Ben-tian, LU Xin-shi. Study on the Adaptability of Alfalfa Cultivars with Different Fall Dormancy Rates in Guizhou Area[J]. , 2011, 19(2): 242-246.

徐大伟, 姚春艳, 莫本田, 卢欣石. 不同秋眠级苜蓿品种在贵州的适应性研究[J]. , 2011, 19(2): 242-246.

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Study on the Adaptability of Alfalfa Cultivars with Different Fall Dormancy Rates in Guizhou Area

不同秋眠级苜蓿品种在贵州的适应性研究

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