LI Quanhui,HOU Quangang.Evaluation and Analysis on Major Agronomic Traits of Capsicum annuum var.longunt[J].Northern Horticulture,2018,42(23):9-15.[doi:10.11937/bfyy.20181432]
线辣椒主要农艺性状的评价与分析
- Title:
- Evaluation and Analysis on Major Agronomic Traits of Capsicum annuum var.longunt
- Keywords:
- Capsicum annuum var.longunt; agronomic traits; correlation analysis; principal component analysis; path analysis
- 文献标志码:
- A
- 摘要:
- 以11份线辣椒种质资源为试材，采用随机区组设计，对线辣椒株高、单株产量等10个主要农艺性状进行了评价与分析，以期为线辣椒新品种选育，平衡各农艺性状之间的关系提供参考依据。结果表明：不同线辣椒资源中，10个农艺性状均存在不同程度的变异，其中单株结果数和单株产量的变异较大，果长、果横径、茎粗等性状变异较小；单果质量和茎粗、叶片宽、果长、果横径呈极显著正相关，单株结果数和茎粗呈极显著正相关性，单株产量与茎粗和单株结果数呈极显著正相关性，而单株结果数和单果质量存在一定的负相关性；单株结果数、叶片长、茎粗、果长、单株叶片数5个性状对产量有直接的正向效应，其中单株结果数和单果质量对单株产量的贡献最大；应用主成分分析将线辣椒10个农艺性状简化为3个主成分，其累计贡献率为81.88%，以单株产量因子贡献率最高，为63%。
- Abstract:
- Eleven different lines of chili pepper germplasm resources were used to study the variation，correlation，principal component and yield path.With randomized block design，a total of 10 different agronomic traits were evaluated and analyzed.The results showed that ten agronomic characteristics had different degrees of variation，among them yield and fruit number per plant had larger variation，fruit length，and stem diameter had smaller variation.The correlation analysis showed that there were significant positive correlations between single fruit weight and stem diameter，leaf width，fruit diameter and fruit length；the result also showed that there was a significant positive correlation between the fruit number per plant and the stem diameter，and the yield per plant had a significant positive correlation with the stem diameter and the fruit number per plant，while the single fruit number and fruit weight had a negative correlation.The results of path analysis showed that there were five direct characters in the nine different traits，the fruit number per plant，leaf length，stem diameter，fruit diameter and single fruit weight had a direct positive effect on the yield per plant；the contribution of single fruit weight and fruit number to the yield per plant was the largest.Principal component analysis was used to simplify the 10 agronomic traits of line pepper into three main components，with a cumulative contribution rate of 81.88% and the highest contribution rate of single plant yield factor，which was 63%.
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备注/Memo
第一作者简介：李全辉（1983-），男，硕士，助理研究员，研究方向为蔬菜作物遗传育种与分子生物学。E-mail:liquanhui_2008@163.com.基金项目：青海省重大科技专项计划资助项目（2016-NK-A8）；青海大学农林科学院中青年基金资助项目（2014-NKY-04）。收稿日期：2018-07-12