摘要
本文调查了北美车前 (Plantagovirginica)种群密度对植株形态参数的影响。统计表明 :北美车前营养生长期间 ,种群密度对形态参数的影响不大 ,在生殖生长期间 ,各形态参数受到种群密度较大的制约 ,单株叶数 (Y1 )、叶长 (Y2 )、叶宽 (Y3)、鲜重 (Y4)、根重 (Y5)、花穗数 (Y6)、花穗长(Y7)、花数 (Y8)、花序重 (Y9)和花穗重 /营养体 (Y1 0 )与种群密度 (X)存在如下关系 :Y1 =2 2 .0 4 2 8- 2 .30 2 2lnX、Y2 =2 1 .41 85 + 2 .1 83lnX、Y3=4.9934- 0 .5 0 4 8lnX、Y4=0 .1 5 67+ 699.5 74/X、Y5=7.731 0X- 0 .760 6、Y6=0 .90 1 9+ 31 8.886/X、Y7=2 .42 36+ 1 79.42 5 /X、Y8=46.30 69+ 691 4.0 7/X、Y9=0 .1 382 + 1 5 .95 98/X和Y1 0 =0 .0 4 7+ 0 .0 0 0 2X。文章还比较了北美车前与车前(Plantagovirginica)
The influences of the population density of Plantago virginica on its morphological parameters were investigated at modular level. The results showed that the correlations between the morphological parameters and the population density in the vegetal period were not obvious, while those in the reproductive period were obvious. In the reproductive period, the relationships of the population density (X) with the leaf number(Y 1)?leaf length(Y 2)?leaf breadth(Y 3)?fresh weight(Y 4)?root weight(Y 5)?spike number(Y 6)?spike length(Y 7)?flower number(Y 8)?spike weight(Y 9)and spike weight/vegetal weight(Y 10 )followed: Y 1 = 22.0428-2.3022lnX, Y 2 = 21.4185+2.1828lnX, Y 3 = 4.9934-0.5048lnX, Y 4 = 0.1567+699.574/X, Y 5 =7.7310X -0.7606 , Y 6 = 0.9019+318.886/X, Y 7 = 2.4236+179.425/X, Y 8 = 46.3069+6914.07/X, Y 9 = 0.1382+15.9598/X and Y 10 = 0.047+0.0002X?The density dependences of Plantago virginica and Plantago asiatica were also compared.
出处
《植物研究》
CAS
CSCD
北大核心
2002年第2期236-240,共5页
Bulletin of Botanical Research
基金
教育部"高等学校骨干教师资助计划"的经费资助
