| 圭亚那柱花草抗寒性初步鉴定 |
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| 引用本文： | 王文强,付玲玲.圭亚那柱花草抗寒性初步鉴定[J].热带作物学报,2009,30(11):1562-1564. |
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| 作者姓名： | 王文强 付玲玲 |
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| 作者单位： | 1. 中国热带农业科学院热带作物品种资源研究所,农业部热带作物种质资源利用重点开放实验室,海南儋州,571737
2. 海南大学农学院,海南儋州,571737 |
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| 基金项目： | 现代农业产业技术体系建设专项资金;农业部"948"优良柱花草新品种引进与推广项目 |
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| 摘 要： | 以11个圭亚那柱花草种质为试材,热研2号柱花草为对照,用电解质渗透法作为指标,比较其抗寒性.结果表明,圭亚那柱花草半致死温度(LT_(50))范围在-0.17～-2.33℃之间,圭亚那柱花草种内抗寒性差异较小.CIAT11362、USF873004、GC1528、Mineirao和GC1576的半致死温度(LT_(50))低于热研2号柱花草.其它种质的LT_(50)高于热研2号柱花草.
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| 关 键 词： | 圭亚那柱花草 抗寒性 Logistic方程 |
Identification of Cold Tolerance of Stylosanthes guianensis Swartz. |
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| Wang Wenqiang and Fu Lingling.Identification of Cold Tolerance of Stylosanthes guianensis Swartz.[J].Chinese Journal of Tropical Crops,2009,30(11):1562-1564. |
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| Authors: | Wang Wenqiang and Fu Lingling |
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| Institution: | Tropical Crops Genetic Resources Institute, CATAS/ Ministry of Agriculture Key Laboratory for Utilization of Tropical Crops Germplasm Resources;College of Agronomy, Hainan University |
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| Abstract: | Cold tolerance of 11 accessions of germplasm of Stylosanthes guianensis Swartz. with Stylo 'Reyan 2'(S. guianensis 'Reyan 2') as control were detected in terms of electrolyte leakage rate. The results showed that the LT_(50) of S. guianensis Swartz ranged from - 0.17℃ to - 2.33℃, which indicated a very little difference in interspecific cold tolerance, that the LT_(50) of CIAT11362, USF873004, GC1528, Mineiraos and GC1576 were lower than 'Reyan 2' and that the LT_(50) of all the other accessions were higher than 'Reyan 2'. |
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| Keywords: | Stylosanthes guianensis Swartz low temperature tolerance logistic equation |
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