WANG Ping,ZHANG Yan,BAI Li-hua,et al.Correlation and Path Analysis About Yield Component Factors of Seed-used Pumpkin (Cucurbita pepo L.)[J].Northern Horticulture,2012,36(24):16-19.
籽用美洲南瓜种子产量构成因子的相关及通径分析
- Title:
- Correlation and Path Analysis About Yield Component Factors of Seed-used Pumpkin (Cucurbita pepo L.)
- 文章编号:
- 1001-0009(2012)24-0016-04
- Keywords:
- seed-used pumpkin; seed yield; correlation; path analysis
- 分类号:
- S 642.1
- 文献标志码:
- A
- 摘要:
- 以125份内蒙古河套地区籽用南瓜种美洲南瓜栽培种为材料，对单瓜种子产量与其它8个主要产量因子(瓜纵径、瓜横径、单瓜重、单瓜种子数、种子长、种子宽、种子厚、百粒重)进行了相关分析、通径分析及回归分析。结果表明：单瓜种子产量与大部分产量性状间存在着极其密切的相关关系，但经通径分析进一步发现，只有单瓜种子数和百粒重对单瓜种子产量存在直接作用关系，其它产量性状主要通过这2个产量性状对单瓜种子产量构成起间接作用；在其它产量性状保持在平均水平的条件下，提高单瓜种子产量的有效途径是增加单瓜种子数目、百粒重和单瓜重；果形指数与种子产量之间的研究结果表明，单瓜种子产量随着果形指数的增大先增加后减少，当果形指数为3.2时，种子产量最高。
- Abstract:
- 125 seed-used pumpkin cultivated species (Cucurbita pepo L.) were used as the materials,the correlation，path and regression analysis were made between seed yield of single fruit and eight yield factors including length of fruit,width of fruit,weight of single fruit，seeds of single fruit,seed length,seed width,seed thickness and 100-seed weight.The results showed that most of yield factors was very closely related each other，but through further path analysis，it found that only seeds of single fruit and 100-seed weight played the directly influence on seed yield of single fruit,other factors just existed the indirect effect on seed yield singler fruit through the above two major factors.When other yield factors remained the average level，it was effective to increase the seed yield of single fruit by adding seeds of single fruit,100-seed weight and weight of single fruit;the relationship between the fruit shape index and seed yield of single fruit was that seed yield of single fruit showed firstly increased and then decreased with increasing fruit shape index，and when the fruit shape index was 3.2，seed yield of single fruit reached the most.
参考文献/References:
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备注/Memo
第一作者简介：王萍(1968-），女，博士，副教授，硕士生导师，研究方向为蔬菜种质资源与种质创新。E-mail:wangpingsc@yahoo.com.cn.