Variation and Probability Grading of Main Quantitative Traits of Phalaenopsis Germplasm Resources

doi:10.3969/j.issn.1000-2561.2020.06.007

Abstract

Abstract:

The variation, normality test and probability grading analysis of 24 main quantitative traits were carried out, using 53 Phalaenopsis germplasm resources as the research materials. The coefficient of interspecific variation of the traits varied from 8.22% to 45.31%. Among them, the coefficient of variation of the flower number was the biggest, while the length of gynostemium was the least. Meanwhile, the coefficient of intraspecific variation of the traits varied from 5.07% to 22.50%. The coefficient of variation of inflorescence length was the biggest, and the flower width was the least. The Sig value of 23 quantitative traits, such as plant size and leaf length, was more than 0.05 by K-S test, which was in accordance with normal distribution, and the number of inflorescence showed skewed distribution according to chi-square test. All the quantitative traits examined were in accordance with normal distribution. The 24 quantitative traits could be divided into five grades. Four points (X-1.2818S), (X-0.5246S), (X+0.5246S) and (X+1.2818S) are used uniformly, so that the probability of the trait value falling into 1-5 grades is 10%, 20%, 40%, 20% and 10%, respectively.

Key words: Phalaenopsis, quantitative traits, probability grading, DUS testing

CLC Number:

ZHONG Haifeng,CHEN Jianfeng,CHEN Yuhua,QIU Sixin,HUANG Minling. Variation and Probability Grading of Main Quantitative Traits of Phalaenopsis Germplasm Resources[J]. Chinese Journal of Tropical Crops, 2020, 41(6): 1117-1123.

Figures/Tables 5

References 27

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代码 Code	性状 Characteristics	代码 Code	性状 Characteristics
C1	植株大小^*/cm	C13	花瓣宽度^*/cm
C2	叶片长度^*/cm	C14	唇瓣中裂片长度^*/cm
C3	叶片宽度^*/cm	C15	唇瓣中裂片宽度^*/cm
C4	花序长度^*/cm	C16	唇瓣肉突大小/mm
C5	花序花朵数量^*/个	C17	叶片厚度/mm
C6	花序梗长度^*/cm	C18	合蕊柱长度/mm
C7	花序梗粗度^*/mm	C19	合蕊柱粗度/mm
C8	花朵长度^*/cm	C20	花枝长度⁺/cm
C9	花朵宽度^*/cm	C21	花梗长度⁺/cm
C10	萼片长度^*/cm	C22	花梗粗度⁺/mm
C11	萼片宽度^*/cm	C23	唇瓣侧裂片长度⁺/cm
C12	花瓣长度^*/cm	C24	唇瓣侧裂片宽度⁺/cm

代码 Code	性状 Characteristics	代码 Code	性状 Characteristics
C1	植株大小^*/cm	C13	花瓣宽度^*/cm
C2	叶片长度^*/cm	C14	唇瓣中裂片长度^*/cm
C3	叶片宽度^*/cm	C15	唇瓣中裂片宽度^*/cm
C4	花序长度^*/cm	C16	唇瓣肉突大小/mm
C5	花序花朵数量^*/个	C17	叶片厚度/mm
C6	花序梗长度^*/cm	C18	合蕊柱长度/mm
C7	花序梗粗度^*/mm	C19	合蕊柱粗度/mm
C8	花朵长度^*/cm	C20	花枝长度⁺/cm
C9	花朵宽度^*/cm	C21	花梗长度⁺/cm
C10	萼片长度^*/cm	C22	花梗粗度⁺/mm
C11	萼片宽度^*/cm	C23	唇瓣侧裂片长度⁺/cm
C12	花瓣长度^*/cm	C24	唇瓣侧裂片宽度⁺/cm

代码 Code	最大值 Max.	最小值 Min.	极差 Range	中值 Median	平均值 Mean	标准差 Average SD	品种内变异系数 Coefficient of variation within varieties/%	品种间变异系数 Coefficient of variation among varieties/%
C1	50.6	18.9	31.8	34.6	34.2	6.5	9.14	19.05
C2	26.2	11.3	14.9	19.1	19.3	3.9	7.64	20.35
C3	10.6	5.1	5.5	8.0	7.9	1.2	6.22	15.06
C4	47.5	10.0	37.6	23.5	23.7	7.5	22.50	31.68
C5	27.1	4.8	22.3	9.0	10.7	4.9	14.68	45.31
C6	56.1	9.8	46.3	36.0	34.1	11.5	12.78	33.57
C7	8.3	3.3	5.0	5.8	5.8	1.0	8.19	17.29
C8	10.2	3.3	6.9	7.4	7.3	1.7	5.79	23.22
C9	11.6	4.0	7.6	8.8	8.6	2.1	5.07	24.41
C10	5.9	1.9	4.0	4.3	4.3	1.1	5.55	25.47
C11	4.7	1.5	3.2	3.3	3.3	0.9	7.11	26.78
C12	5.5	1.8	3.8	4.1	4.1	1.0	5.61	25.09
C13	7.7	1.8	5.9	5.4	5.1	1.6	5.76	32.05
C14	2.7	1.5	1.2	2.1	2.1	0.3	5.75	14.52
C15	2.9	1.0	1.9	2.1	2.1	0.5	5.28	23.16
C16	7.6	2.4	5.3	5.2	5.3	1.4	5.51	25.86
C17	3.1	1.7	1.4	2.5	2.5	0.3	8.31	12.30
C18	11.6	7.3	4.3	9.7	9.8	0.8	7.05	8.22
C19	7.0	3.4	3.6	5.7	5.6	0.9	5.32	15.95
C20	88.5	22.7	65.8	58.5	57.9	16.2	9.66	27.95
C21	4.7	2.1	2.6	3.7	3.6	0.7	8.59	18.17
C22	5.6	2.1	3.5	3.7	3.7	0.7	8.11	19.05
C23	2.6	1.0	1.6	2.0	1.9	0.4	5.11	19.72
C24	2.0	0.4	1.7	1.5	1.4	0.4	6.98	31.38

代码 Code	最大值 Max.	最小值 Min.	极差 Range	中值 Median	平均值 Mean	标准差 Average SD	品种内变异系数 Coefficient of variation within varieties/%	品种间变异系数 Coefficient of variation among varieties/%
C1	50.6	18.9	31.8	34.6	34.2	6.5	9.14	19.05
C2	26.2	11.3	14.9	19.1	19.3	3.9	7.64	20.35
C3	10.6	5.1	5.5	8.0	7.9	1.2	6.22	15.06
C4	47.5	10.0	37.6	23.5	23.7	7.5	22.50	31.68
C5	27.1	4.8	22.3	9.0	10.7	4.9	14.68	45.31
C6	56.1	9.8	46.3	36.0	34.1	11.5	12.78	33.57
C7	8.3	3.3	5.0	5.8	5.8	1.0	8.19	17.29
C8	10.2	3.3	6.9	7.4	7.3	1.7	5.79	23.22
C9	11.6	4.0	7.6	8.8	8.6	2.1	5.07	24.41
C10	5.9	1.9	4.0	4.3	4.3	1.1	5.55	25.47
C11	4.7	1.5	3.2	3.3	3.3	0.9	7.11	26.78
C12	5.5	1.8	3.8	4.1	4.1	1.0	5.61	25.09
C13	7.7	1.8	5.9	5.4	5.1	1.6	5.76	32.05
C14	2.7	1.5	1.2	2.1	2.1	0.3	5.75	14.52
C15	2.9	1.0	1.9	2.1	2.1	0.5	5.28	23.16
C16	7.6	2.4	5.3	5.2	5.3	1.4	5.51	25.86
C17	3.1	1.7	1.4	2.5	2.5	0.3	8.31	12.30
C18	11.6	7.3	4.3	9.7	9.8	0.8	7.05	8.22
C19	7.0	3.4	3.6	5.7	5.6	0.9	5.32	15.95
C20	88.5	22.7	65.8	58.5	57.9	16.2	9.66	27.95
C21	4.7	2.1	2.6	3.7	3.6	0.7	8.59	18.17
C22	5.6	2.1	3.5	3.7	3.7	0.7	8.11	19.05
C23	2.6	1.0	1.6	2.0	1.9	0.4	5.11	19.72
C24	2.0	0.4	1.7	1.5	1.4	0.4	6.98	31.38

代码 Code	极差绝对值 Absolute	正极差 Positive	负极差 Negative	K-S值 K-S value	Sig值 Sig value	c²-P值 c²-P value
C1	0.072	0.072	-0.072	0.525	0.946	1.000
C2	0.097	0.053	-0.097	0.703	0.706	1.000
C3	0.099	0.091	-0.099	0.720	0.677	0.949
C4	0.088	0.088	-0.04	0.640	0.808	1.000
C5	0.234	0.234	-0.149	1.700	0.006	1.000
C6	0.104	0.097	-0.104	0.754	0.621	1.000
C7	0.087	0.081	-0.087	0.637	0.813	0.522
C8	0.109	0.072	-0.109	0.792	0.557	0.995
C9	0.132	0.083	-0.132	0.963	0.312	0.999
C10	0.143	0.079	-0.143	1.043	0.227	0.924
C11	0.098	0.079	-0.098	0.711	0.692	0.980
C12	0.126	0.078	-0.126	0.914	0.373	0.831
C13	0.149	0.082	-0.149	1.086	0.189	0.951
C14	0.115	0.115	-0.093	0.836	0.486	0.273
C15	0.121	0.107	-0.121	0.882	0.418	0.501
C16	0.097	0.083	-0.097	0.708	0.698	1.000
C17	0.114	0.085	-0.114	0.829	0.497	0.003
C18	0.051	0.051	-0.051	0.373	0.999	0.996
C19	0.089	0.063	-0.089	0.646	0.799	0.999
C20	0.076	0.044	-0.076	0.553	0.919	1.000
C21	0.107	0.055	-0.107	0.779	0.579	0.670
C22	0.111	0.108	-0.111	0.808	0.531	0.360
C23	0.186	0.103	-0.186	1.356	0.051	0.008
C24	0.143	0.091	-0.143	1.043	0.227	0.120