摘要
通过对21个甜菜种子样品的发芽过程分析发现:从浸泡时算起到72h、96h、120h的发芽率(X2、X3、X4)与标准终期(240h)的发芽率(Y)极显著正相关,且回归方程拟合得好可用其进行预测;用含自变量X2的关系式预测各样品发芽率的平均值(Y)与实测平均值仅差0.01度。通过对14个库存26个月的甜菜种子样品发芽率检测了解到:各样品平均,发芽率月均下降0.28度,月下降值标准差为0.12度。对12个库存17个月的甜菜种子样品进行机械标准加工,将加工后种子的实测发芽率(Jt)与有关变量进行相关分析后发现:Jt与库存前原始种子的发芽率(W)、剖仁率(P)无明显线性相关关系,而与死胚率(S)极显著负相关,并且与由W、S等变量计算出的理论最高加工发芽率(Z)、理论标准加工发芽率(B)极显著正相关;由W、S及库存月数(t)建立起来的关系式能够相当准确地预测收购即时或库存后甜菜种子的标准加工发芽率。
Through analysising germination course of 21 sugar beet seed samples,we discovered：The positive liner correlation between germination percentage（ GP） at 72 hours,96 hours, 120 hours（X2, X3,X4） and GP at 240 honrs（Y）was very significant. Their liner regression equation was tenable and can use it to predict. The deviation between test mean GP valuse and predict mean GP values of another 20 sugar beet seeds＇ samples was only 0.01°S. The test results on GP of 14 seeds＇ samples kept in stock for 26 months showed： The GP values of sugar beet seeds＇ population dropped 0.28°S on an average every month and its standard deviation was 0.12°s.In this study we processed 12 sugar beet seeds＇ samples kept in stock for 17 months and tested their GP（J17） ,and we also tested original seeds＇ GP （W） ,dead embryo pereentage（S）,contain embryo percentage（P,P = W ＋ S）before kept in stock and established compute formula on the processed seeds＇ highest GP （Z） ,the processed seed＇s standard GP（B） ：Z = W/（W ＋ S） × 100,B = W/（W ＋ S） × 100-3.The correlation analysis results showed：linear correlation between J17and W,J17 and P was not significant. But negative linear correlation between J17 and S was very significant, positive linear correlation between J17 and Z （or B）was very significant.Compute formula： Bt = （W- 0.28t）/（W ＋ S） × 100- 3（t is months） can predict processed seeds population＇s standard GP after kept in stock or before that very precisely.
出处
《中国甜菜糖业》
2005年第3期16-20,共5页
China Beet & Sugar
关键词
甜菜
发芽率
死胚率
相关
预测
sugar beet
germination percentage
dead embryo percentage
correlation
predict
