【摘要】 为研究西藏白菜型油菜在干旱胁迫下抗倒伏相关性状的动态变化情况,选取西藏白菜型油菜中农艺性状表现良好的9份油菜品种为材料,在干旱棚内通过盆栽模拟干旱调查了两种处理下油菜茎秆抗折力、含水量、木质素含量的变化情况,通过调查发现,两种处理下茎秆含水量随着生育时期的变化呈现下降趋势,浇水处理的茎秆含水量高于对照,抗折力随着生育时期的变化出现上升趋势,出蕾薹期外干旱处理的茎秆抗折力均高于对照,木质素含量均呈现升高趋势。本调查可为今后研究西藏白菜型油菜抗倒伏性提供参考。更多还原

【Abstract】 In order to study the dynamic changes of lodging resistance of Brassica Napus L. in Tibet under drought stress, nine cultivars of Brassica Napus L. with good agronomic characters were selected as materials. In a pot experiment simulating drought in a dry shed, the changes of bending strength, water content and lignin content changes of rape stems under two treatments were investigated. The water content of the stem showed a decreasing trend with the change of growth period under the two treatments, and the water content of the stem in the irrigation treatment was higher than that in the control. The bending strength showed an increasing trend with the change of growth period. Except in budding stage, the stem bending strength of drought treatment was higher than that of control. In addition, the lignin content increased all the time during growth. This investigation can provide reference for studying lodging resistance of Brassica napus in Tibet in the future.更多还原