桑树春季产叶量性状间的通径分析

为研究桑树主要经济性状间的相关关系,对桑树春季发芽率(x_1)、生长芽率(x_2)、株条长(x_3)、米条长产叶量(x_4)、公斤叶片数(x_5)与株产叶量(y)进行了各变量间的相关分析,并进行了x_1、x_2、x_3、x_4、x_5对株产叶量(y)的通往分析。米条长产叶量(x_4)对株产叶量(y)有极重要的影响,相关系数r_4y=0.61703~(**)达到0.01极显著水平,而且对株产叶量的直接影响很大p_(4y)=1.11542。其次为发芽率(x_1),与株产叶量(y)的相关系数r_1_y=0.44570~(**)也达0.01极显著水平。株条长(x_3)与株产叶量(y)之间的相关系数r_3_y=0.20125不显著,但通径分析发现,株条长(x_3)对株产叶量(y)的直接效应很大,p_3_y=0.91281。

Passage Analysis of Properties of Spring Leaf Yield

In order to research relationship among major economic characters of the mulberry, correlation coefficients of the variables including mulberry spring germination percentage(x1) ,growth bud rate(x2) ,shoot length of a plant(x3), leaf yield per meter length of shoot (x4) and leaf number per kilogram (x5) to leaf yield of a plant(y)were gotten, moreover passage analyses of x1, x2, x3 , x4, x5, to leaf yield of a plant(y) were made. Leaf yield per meter length of shoot (x4) has major effect on leaf yield of a plant(y),correlation coefficient r4y= 0.61703** reached extreme significance on 0.01 level, and the direct effect on leaf yield of a plant is evident p4y - 1.11542. The next variable is germination percentage(x1) ,its correlation coefficient to leaf yield of a plant(y) r1y=0.44570* * reached extreme significance on 0.01 level.Correlation coefficient of shoot length of a plant(x3) with leaf yield of a plant(y) r3y-0.20125 isn' t significancant, but we found that shoot length of a plant(x3) has remarkable direct effect on leaf yield of a plant, p3y= 0.91281 through passage analysis.