报道了产于云南西部贡山县高黎贡山西坡的巴坡、撕拉洛等地海拔1 380～1 500 m独龙江河畔的空竹属一新种——毒空竹(Cephalostachyum virulentum *** et Fan Du ***.)。新种与空竹(*** Gam-ble)近似,合轴丛生,秆直立,秆极光亮,无主枝,...
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报道了产于云南西部贡山县高黎贡山西坡的巴坡、撕拉洛等地海拔1 380～1 500 m独龙江河畔的空竹属一新种——毒空竹(Cephalostachyum virulentum *** et Fan Du ***.)。新种与空竹(*** Gam-ble)近似,合轴丛生,秆直立,秆极光亮,无主枝,小枝具叶7～9片;叶片卵状披针形,长20～25 cm,宽4～4.5 cm,叶背面无毛;叶柄长仅5 mm,叶鞘口紫色,无繸毛,明显区别于其他种类。
Inter-simple sequence repeat（ISSR） molecular markers were applied to analyze the genetic diversity and clustering of 48 introduced and bred cultivars of Olea euyopaea L. Totally 106 DNA bands were amplified by 11 sc...
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Inter-simple sequence repeat（ISSR） molecular markers were applied to analyze the genetic diversity and clustering of 48 introduced and bred cultivars of Olea euyopaea L. Totally 106 DNA bands were amplified by 11 screened primers, including 99 polymorphic bands; the percentage of polymorphic loci was 93.40%, indicating a rich genetic diversity in Olea euyopaea L. germplasm resources. Based on Nei＇s genetic distances between various cultivars, a dendrogram of 48 cultivars of Olea euyopaea L. was constructed using unweighted pair-group（UPMGA）method,which showed that 48 cultivars were clustered into four main categories; 84.6% of native cultivars were clustered into two categories; most of introduced cultivars were clustered based on their sources and main usages but not on their geographic origins. This study will provide references for the utilization and further genetic improvement of Olea euyopaea L. germplasm resources.
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