小麦形态性状与倒伏的相关分析

进行了小麦植株穗部性状及地上各节间性状与倒伏的相关分析以及节间长度性状的多元相关分析。结果表明，株高、重心高与倒伏为极显著正相关，基部节间长度与倒伏也呈极显著正相关，但穗长与稳下节间长与倒优无相关。穗下节间的茎杆直径、髓腔直径与倒伏相关很小，基部四个节间的茎杆直径、髓腔直径与倒伏为正相关，但只有基部的穗下第五节间髓腔直径与倒伏相关达显著水平。基部四个节间长度有按比例一致变化趋势，而穗长、穗下节间长度则无此一致变化趋势。

The Correlation Analysis of the Stem Traits and Lodging in Wheat

There are positive correlations at 1% level of significance between lodgingand plant height or height of center of gravity. The correlations between lodging and diameters of all internodes are positive but not significant. There are positive correlations betweenlodging and culm cavity diameters of internodes except for the internode next to the ear, withhighest correlation which is significant at 5% level for the fifth internode under the ear. Thecorrelations between lodging and culm - wall thicknesses of all internodes are negative butnot significant. No significant correlations are found between car length and the length of internode next to ear or between anyone of them and anyone of other hasal Internodal lengths.The correlations between pairs of internodal lengths of four hasal internodes are positive andsignificant at 1% level.