| Genetic diversity of agronomic traits and node characters in foxtail millet (Setaria italic Beauv.) |
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| DOI：10.7606/j.issn.1000-7601.2018.03.08 |
| Key Words: foxtail millet genetic diversity agronomic characters node traits yield traits |
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| Abstract: |
| Agronomic traits and node characters were evaluated by correlation analysis，principal component analysis， and regression analysis， and cluster analysis. The result showed that genetic diversity index (H′) of eight classified traits were difference， and a high H′ was found in plant type，fringe type，and fringe density， but H′ of grain colour and rice colour was low level. For node length， the range of CV and H′ were 23.294~26.811 and 1.860~2.184， and the third node from plant top had a high level at H′ and CV. For node wide， the range of CV and H′ were 16.455~25.610 and 1.473~2.023， and the first node from plant top had a high level at H′ and medium level at CV. Node wide of different node position had a clustering， but node length from different node position was scattered. The two clusters were found based on cluster analysis form node traits. A positive correlation was found between seed weight per fringe and H′ of node wide， CV of node length（r=0.50，0.46，P<0.05）， but a negative correlation was found between eed weight per fringe and CV of node wide，H′ of node length （r=-0.51，-0.47，P<0.05）. Genetic divesitiy of agronomic traits and node characters was plentiful， and node traits， one of agronomic traits， may have an effect on yield traits. |