紫花苜蓿多父本F1代低蒸腾及产量性状的隶属函数分析

为选育低蒸腾的高产抗旱苜蓿（Medicago sativa）品种，本试验以‘武功’、‘三得利’、‘Sardi10’、‘陇南1号’、‘WL168HQ’、‘WL343HQ’、‘WL656HQ’、‘WL712’、‘WL903’进行多父本杂交，并从F₁代选出母本为‘WL903’的WL903-1^#—WL903-7^#和母本为‘Sardi10’的Sardi10-1^#—Sardi10-5^#共12个株系作为试验材料，进行蒸腾特性和产量相关性状分析。结果表明：12个株系隶属函数综合评价顺序为Sardi10-5^#>Sardi10-4^#>WL903-4^#>Sardi10-1^#>WL903-2^#>WL903-1^#>WL903-6^#>WL903-7^#>Sardi10-2^#>WL903-3^#>Sardi10-3^#>WL903-5^#。本研究结果表明，Sardi10-5^#和Sardi10-4^#为低蒸腾、高产的理想株系。

Membership Function Analysis of Low Transpiration and Yield Traits in Alfalfa Multi-paternal Hybrid F1 Generation

In order to breed alfalfa (Medicago sativa) varieties with high yield,low transpiration and drought resistance,‘Wugong’,‘Sanditi’,‘Sardi10’,‘Longnan No.1’,‘WL168HQ’,‘WL343HQ’,‘WL656HQ’,‘WL712’,and ‘WL903’ were used for multi-parent hybridization in the experiment. A total of 12 strains of WL903-1^#—WL903-7^# with female parent ‘WL903’ and Sardi10-1^#—Sardi10-5^# with female parent ‘Sardi10’ were selected as experimental materials for transpiration characteristics and yield-related traits analysis. The comprehensive evaluation order of the membership function of 12 strains was:Sardi10-5^# > Sardi10-4^# > WL903-4^# > Sardi10-1^# > WL903-2^# > WL903-1^# > WL903-6^# > WL903-7^# > Sardi10-2^# > WL903-3^# > Sardi10-3^# > WL903-5^#. The results showed that Sardi10-5^# and Sardi10-4^# were ideal strains with low transpiration and high yield.