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期 刊 ：植物遗传资源学报 2016年 17卷 3期

关键词：朱顶红；DUS测试；数量性状；筛选；分级；测量部位；

Keywords:Amaryllis (Hippeastrum), DUS testing, quantitative characteristics, selection, grade, measurement site,

摘 要 ：利用70个朱顶红品种对12个数量性状进行了筛选及分级研究，并对5个数量性状的测量部位进行了研究。结果表明：所有性状均满足DUS测试要求，性状2由于区分能力弱不适于作为DUS测试性状。12个数量性状可进行3～9个连续分布的分级。花茎从下往上逐渐变细，但不同品种变细程度略有差异，在测量花茎中部的最大宽度时要求严格测量花茎的1/2处；不同茎上各数量性状测量值略有差异，除花茎长度和花梗长度外的性状差异不显著；同一花茎不同花间数量性状差异较小；同品种的花外花被片长度、宽度不存在显著差异；种球大小对数量性状有显著影响。

Abstract:The 12 quantitative traits were selected and classified with 70 amaryllis varieties. And the measurement site of five quantitative traits were studied also. The results showed that all quantitative traits are suitable for DUS testing, while characteristic 2 has a weak distinguishing ability. 12 quantitative traits can be classified into 3-9 continuous grades respectively. The peduncles become narrow from base to apex with a different degree in different variety. The measurement of “Peduncle: maximum width at middle third” should be made at the middle of peduncle to reduce the error. The quantitative traits of different peduncles have little difference, except for length of peduncle and pedicel. The differences between quantitative traits of different flowers on the same peduncle were little. There is no significant difference between the lengths of outer petal, so do the width of them. Bulb size had a remarkable effect on quantitative traits.

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