论文部分内容阅读
“九二Ｏ”施用时期和剂量对杂交稻制种母本主要异交性状的效应研 究结果表明：异交率与柱头外露率有极显著的直线回归正相关，与包颈长有极显著 的直线回归负相关。柱头外露率的时期和剂量效应表现在；一定剂量范围内，柱头 外露率随剂量增加有提高的趋势；一定剂量下柱头外露率与时期的变化曲线是中间 高、两头低。异交率时期和剂量效应与柱头外露率的时期剂量效应相似，且变化同 步。包颈长的时期和剂量效应表现为：不同时期高剂量比低剂量易解除包颈；一定剂量条件下，包颈长与时期的变化曲线是一条倒抛物线。
The results showed that there was a significant linear regression between the rate of outcrossing and the stigma exsertion, and there was a significant Linear regression negative correlation. The duration of stigma exsertion and the dose effect are shown as follows: within a certain dose range, the stigma exudation rate tends to increase with the increase of dose; the change curve of stigma exudation rate with time is medium high and low at both ends. The outdated rate and dose effects were similar to the period dose effects of stigma exsertion, and the changes were synchronized. The length of the neck and the dose effect were as follows: the high dose and the low dose at different periods could easily remove the neck; under a certain dose, the change curve of the length of the neck between the neck and the period was an inverted parabola.