‘红叶’等美国紫薇新品种品比试验

Variety comparative test on new crape myrtle varieties included 'Pink Velour' from America

以美国紫薇新品种‘红火箭’、‘红叶’和‘红火球’以及当地‘红花紫薇’(对照品种)为试验材料,开展美国紫薇新品种品比试验。结果表明:3个美国品种生长速度较快,4年生时‘红火箭’、‘红叶’和‘红火球’比对照品种‘红花紫薇’的树高分别高14. 9%、13. 6%、25. 2%,地径分别粗11. 40%、17. 26%、22. 15%。红火箭紫薇花色鲜红(RHS 45A),红叶紫薇花色紫红(RHS 67A),红火球花色深红(RHS 46A);3个美国紫薇新品种开花均早,6月上旬或中旬始花,花期长达4个月左右;花径、花序长和花序着花数等开花习性均优于对照品种‘红花紫薇’,具有极佳的观赏效果。

In order to breed new varieties of crape myrtle,three American crape myrtle(Lagerstroemia indica)varieties'Red Rocket','Pink Velour','Dynamite'and native crape myrtle variety with red flowers(the control variety)as the test varieties.The results showed that the three American varieties grow faster than the control variety,when compared to the control variety,the tree height of 4-year-old L.indica i Red Rockets,*Pink Yelour,and 4 Dynamite*were 14.90%,13.60%and 25.20%higher,the ground diameters were 11.40%,17.26%and 22.15%longer,respectively.4Red RocketJ has bright red flowers(RHS 45A),'Pink Velour'with a color of red-purple(RHS 67A)flowers and the color of flowers of*Dynamite*is dark-red(RHS 46A).The flowering time of the three American varieties is early,and have a relatively long flowering period of about 4 months with initial flower opening in early or mid-June.Their flowering characteristics are better than the control variety,such as diameter of corolla,inflorescence length and flower number per inflorescence.It's high ornamental value for the three new varieties owing to their attractive elegant flowers with gorgeous color.