两系杂交中籼皖稻153抗倒特性分析

Analysis of the Lodging Resistance of WD153,A Two-line Hybrid Indica Rice

[目的]揭示皖稻153抗倒特性强的成因。[方法]对两系杂交中籼皖稻153和其双亲及部分同型主栽组合等茎秆和根系性状进行测量和分析。[结果]皖稻153较之其他参试品种,在茎秆性状上具有适中的株高和较强的抗折力;在根系性状上具有丰富的根系数量和明显的根长优势。[结论]皖稻153表现出较小的倒伏指数和较强的抗倒能力。

[ Objective] The aim was to reveal the reason for WD153＇ s stronger lodging resistance. [ Method] Comparing with WD153＇ s par- ents and the same types of main cuhivars, the stem and root traits of the two - line hybrid indica WD153 had been measured and analyzed. [ Result] The results showed that WD153 had the modest height and stronger flexural strength comparing with the other varieties, while for the traits of roots, it had more root numbers and obvious advantages in root length. [ Conclusion] WD153 shows smaller lodging index and stronger lodging resistance.