烤烟新品种云烟99及其亲本生长特性研究

为了解烤烟新品种云烟99生长特性,利用Logistic生长模型对云烟99的株高、叶片数、中部叶叶面积生长进行回归分析,并与其父本9147、母本云烟85做比较。结果表明:(1)云烟99及其亲本3个性状共9个Lo-gistic生长模型方程拟合程度均达极显著水平,能较真实地反映云烟99及其亲本的生长特性;(2)云烟99株高比亲本略高,叶片数与亲本相当,中部叶叶面积与父本相当、比母本大;(3)云烟99株高和叶片数的线性生长期与父本相当、比母本长,中部叶叶面积比亲本长;(4)云烟99的3个性状平均生长速率均介于双亲之间,但线性生长速率和最大生长速率存在差异。

Growth Characteristics of New Flue-cured Tobacco Variety Yunyan99 and Its Parents

In order to study the growth characteristics of a new flue-cured tobacco variety Yunyan99,logistic regression analysis was performed to analyze the data of plant height,leaf number and middle leaf area of the Yunyan99,9147(♂)and Yunyan85(♀).The results showed that:(1)goodness-of-fit of nine logistic models established from the three characters of the three flue-cured tobacco varieties reached extremely remarkable level.Nine models could truely reflect the growth characteristics of Yunyan99 and its parents;(2)the plant height of Yunyan99 was higher than that of its parents,but the leaf number was not significantly different from that of its parents,the middle leaf area was equal to that of its female parent and larger than that of its male parent;(3) the linear growth days(LGD) of Yunyan99’s plant height and leaf number were equal to those of its male parent and longer than those of its female parent,LGDs of the middle leaf area were more than those of its parents.(4) The average growth rates(AGR) of the three characters of Yunyan99 were between those of 9147 and Yunyan85,but the linear growth rate(LGR) and the maximum growth rate(MGR) were different.