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%。
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 10differentagronomic traits were evaluated and analyzed.The results showed that ten agronomic characteristicshad 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 weresignificant positive correlations between single fruit weight and stem diameter , leaf width , fruitdiameter and fruit length ; the result also showed that there was a significant positive correlationbetween the fruit number per plant and the stem diameter , and the yield per plant had a significantpositive correlation with the stem diameter and the fruit number per plant , while the single fruitnumber and fruit weight had a negative correlation.The results of path analysis showed that therewere five direct characters in the nine different traits , the fruit number per plant , leaf length , stemdiameter , fruit diameter and single fruit weight had a direct positive effect on the yield per plant ; thecontribution of single fruit weight and fruit number to the yield per plant was the largest.Principalcomponent analysis was used to simplify the 10agronomic traits of line pepper into three maincomponents , with a cumulative contribution rate of 81.88%and the highest contribution rate of singleplant yield factor , which was 63%.
作者
李全辉
侯全刚
LI Quanhui;HOU Quangang(Academy of Agriculture and Forestry , Qinghai University , Xining , Qinghai 810016;Qinghai Key Laboratory of Vegetable Genetics and Physiology , Xining , Qinghai 810016 Academy of Agriculture and Forestry , Qinghai University , Xining , Qinghai 810016)
出处
《北方园艺》
CAS
北大核心
2018年第23期9-15,共7页
Northern Horticulture
基金
青海省重大科技专项计划资助项目(2016-NKA8)
青海大学农林科学院中青年基金资助项目(2014-NKY-04)
关键词
线辣椒
农艺性状
相关性分析
主成分分析
通径分析
Capsicum annuum var. longunt
agronomic traits
correlation analysis
principal componentanalysis
path analysis
