Phenotypic variation of floral organs in flowering crabapples and its taxonomic significance

Zhou, Ting; Ning, Kun; Zhang, Wangxiang; Chen, Hong; Lu, Xiaoqing; Zhang, Donglin; El-Kassaby, Yousry A.; Bian, Jian

doi:10.1186/s12870-021-03227-8

BMC Plant Biology

Table 1 Eigenvalue, contribution rate and cumulative contribution rate of each principal component

From: Phenotypic variation of floral organs in flowering crabapples and its taxonomic significance

Principal Component	PC 1	PC 2	PC 3	PC 4	PC 5	PC 6	PC 7	PC 8	PC 9	PC 10
Load coefficient
Floral phenotypic traits
Petal color at the balloon stage	0.93	0.11	0.11	−0.05	− 0.08	− 0.01	0.03	− 0.09	− 0.01	0.02
Peduncle color	0.90	−0.01	− 0.05	0.08	0.04	0.12	−0.03	−0.04	0.05	0.09
Sepal color	0.89	−0.08	0.12	0.11	0.09	0.19	0.08	0.03	0.13	0.04
Petal outside color	0.89	0.14	0.10	0.00	−0.11	−0.05	0.09	−0.13	0.01	0.09
Receptacle color	0.83	0.22	0.02	−0.02	0.03	0.08	−0.14	0.06	0.16	0.06
Style color	0.75	−0.13	− 0.09	0.22	0.07	−0.14	0.05	0.01	−0.23	0.08
Flower diameter	0.11	0.95	0.02	0.12	−0.11	−0.06	0.04	0.02	−0.08	0.10
Petal length	0.11	0.94	0.02	0.07	−0.07	−0.08	0.07	0.05	0.02	0.11
Petal width	0.04	0.81	−0.48	0.06	−0.11	0.05	0.11	0.06	−0.01	0.08
Sepal length	−0.11	0.68	−0.20	−0.33	− 0.09	−0.43	− 0.06	0.05	− 0.04	−0.20
Peduncle thickness	−0.06	0.59	−0.17	0.06	−0.50	0.18	−0.10	0.26	0.02	−0.21
Claw length	0.11	0.58	0.26	0.18	−0.26	− 0.05	−0.11	− 0.34	−0.31	0.21
Sepal width	−0.02	0.56	−0.38	−0.08	− 0.26	0.47	0.03	0.23	0.05	−0.25
Petal length / Petal width	0.09	−0.08	0.86	−0.02	0.10	−0.22	−0.11	0.01	0.08	−0.01
Petal shape	0.12	−0.06	0.79	0.15	0.04	−0.03	0.13	0.18	−0.09	0.07
Petal relative position	0.05	0.12	−0.74	0.30	−0.04	0.10	0.02	0.24	0.13	0.06
Petal number per flower	0.11	0.08	−0.05	0.94	0.00	−0.03	0.15	0.06	−0.07	−0.06
Flower type	0.10	0.07	−0.04	0.93	0.04	0.15	0.04	0.08	0.01	0.09
Receptacle pubescence	−0.03	−0.20	0.06	0.05	0.92	0.02	0.08	0.07	0.03	−0.04
Peduncle pubescence	0.03	−0.14	0.08	−0.01	0.91	0.04	0.04	−0.02	0.07	0.12
Sepal length / Sepal width	−0.04	0.11	0.16	−0.07	0.13	−0.86	−0.02	− 0.16	−0.17	− 0.06
Sepal apex shape	0.15	−0.04	−0.20	0.08	0.23	0.74	0.00	−0.16	−0.11	− 0.05
Peduncle length	0.04	0.08	−0.05	0.12	0.15	−0.04	0.90	0.03	0.04	0.16
Pistil number per flower	−0.02	0.10	0.25	0.44	−0.13	0.35	0.53	0.11	0.05	−0.33
Petal surface wrinkle	−0.10	0.12	0.03	0.14	0.01	0.02	0.06	0.85	−0.10	0.07
Relative position of stigmas and anthers	0.16	−0.14	−0.11	0.01	0.11	0.09	0.07	−0.08	0.83	−0.06
Sepal deflexed	−0.44	0.17	0.10	−0.28	−0.13	− 0.14	−0.36	− 0.11	0.45	0.10
Flower shape	0.26	0.12	0.01	0.02	0.10	0.01	0.11	0.08	−0.04	0.85
Eigenvalue	5.50	5.11	3.25	2.50	1.86	1.35	1.04	0.99	0.97	0.87
Contribution rate / %	19.66	18.26	11.60	8.93	6.64	4.81	3.72	3.53	3.45	3.11
Cumulative contribution rate / %	19.66	37.92	49.52	58.45	65.09	69.90	73.62	77.15	80.60	83.71

The cumulative contribution rate means the representativeness of extracted factors for all variables. Generally, 80% is regarded as the critical value. And the larger the value, the stronger the representativeness. The meaning of each principal component is determined by the absolute value of load coefficient. Variables with an absolute value greater than 0.7 can be considered as representative ones of the principal component

Back to article page

ISSN: 1471-2229

Contact us

General enquiries: journalsubmissions@springernature.com