A comparison of root and stem lodging risks among winter wheat cultivars
A comparison of root and stem lodging risks among winter wheat cultivars
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DOI：
10.1017/s002185960300354x
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发表时间：
2003-09-01
影响因子：
2
通讯作者：
Craigon, J
中科院分区：
文献类型：
--
作者：
Berry, PM;Spink, JH;Craigon, J
2000年至2002年，在英国的3个地点对15个冬小麦品种进行了茎和根倒伏的植株性状测定。倒伏模型被用来估计树干失效风速(树干倒伏阻力)和锚固失效风速(树根倒伏阻力)。自然倒伏的程度和类型也被记录在地块中，这与树干和锚地失效的风速有很好的相关性。15个品种的树干失稳风速与锚固失稳风速之间的相关性很弱(R2=0~33)。这可以通过决定茎和锚固强度的植物性状之间缺乏遗传相关性来解释。倒伏类型(茎或根)与品种对风速的交互作用显著(P
Plant characters that determine stem and root lodging were measured on 15 winter wheat cultivars at three UK sites between 2000 and 2002. A model of lodging was used to estimate stem failure wind speeds (resistance to stem lodging) and anchorage failure wind speeds (resistance to root lodging). The degree and type of natural lodging was also recorded in the plots and this correlated well with the stem and anchorage failure wind speeds. Only a weak correlation (R-2=0-33) was observed between the stem and anchorage failure wind speeds for the 15 cultivars. This can be explained by the absence of genetic correlation between the plant characters that determine the stem and anchorage strength. There was a significant interaction between type of lodging (stem or root) and cultivar for failure wind speed (P