Morphological Variations of Different Populations from Psammochloa villosa,a Peculiar Sandy Plant

doi:10.7525/j.issn.1673-5102.2021.01.008

Abstract

Abstract:

An experiment was conducted to analyze the morphological variation in terms of 12 phenotypic traits，including height of plant，length of spike，length of flag leaf，width of flag leaf，length of spikelet et al，using 20 natural populations of Psammochloa villosa. F value of 12 trait populations was 1.832?8.958，which reached a significant or extremely significant level，the phenotypic traits of different populations of P.villosa were widely varied，and the degree of variation was different. By principal component analysis，the first four principal components represented 82.277% of the morphological diversity. The PCA results indicated that the length of flag leaf，width of flag leaf，length of glume and length of spikelet were the main factors leading to morphological variations of different populations. When the genetic distance is 20.5，20 natural populations of P.villosa could be divided into 2 groups by UPGMA cluster analysis，and the phenotypic characters were not clustered according to the geographical distribution of the populations.

Key words: sandy plant, Psammochloa villosa, phenotypic trait, morphological variation, euclidean distance

CLC Number:

S793.6

Ting LÜ, Tao LIU, Rui-Fang LIANG, Xu SU, Yu-Ping LIU. Morphological Variations of Different Populations from Psammochloa villosa,a Peculiar Sandy Plant[J]. Bulletin of Botanical Research, 2021, 41(1): 60-66.

Figures/Tables 7

Table 1

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References 23

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居群 Population	地点 Location	采集时间 Collection date	经度 Longitude	纬度 Latitude	海拔 Altitude(m)
P2	内蒙阿拉善右旗Alxa Youqi Banner,NMG	2016/7/31	102°0′42.8″	39°21′24.6″	1 560
P11	内蒙阿拉善右旗Alxa Youqi Banner,NMG	2016/7/31	103°58′20.7″	40°7′49.5″	1 430
P29	内蒙阿拉善左旗Alxa Left Banner,NMG	2016/7/30	105°53′35.9″	40°18′39.0″	1 211
P30	内蒙苏尼特右旗Sonid Right Banner,NMG	2016/7/29	107°0′7.9″	41°41′38.0″	1 111
P32	宁夏中卫市Zhongwei,NX	2016/7/23	104°40′5.0″	37°25′29.1″	1 707
P34	宁夏灵武市Lingwu,NX	2016/7/23	106°30′57.8″	38°7′9.8″	1 227
P38	内蒙鄂尔多斯市Ordos,NMG	2016/7/24	107°59′39.6″	37°55′16.3″	1 378
P40	内蒙鄂尔多斯市Ordos,NMG	2016/7/24	108°18′32.4″	37°40′44.1″	1 344
P41	陕西靖边县Jingbian,SX	2016/7/24	108°50′23.5″	37°40′52.2″	1 328
P44	内蒙乌审旗Uxin Banner,NMG	2016/7/24	108°40′6.3″	38°22′8.1″	1 286
P50	内蒙乌审旗Uxin Banner,NMG	2016/7/28	109°10′21.9″	38°55′36.2″	1 308
P51	内蒙乌审召Uxin Ju,NMG	2016/7/29	109°2′11.7″	39°6′46.3″	1 316
P57	内蒙杭锦旗Hanggin Banner,NMG	2016/8/4	108°28′34.6″	40°1′59.2″	1 236
P60	内蒙杭锦旗Hanggin Banner,NMG	2016/8/7	108°58′20.4″	40°26′47.6″	1 089
P64	内蒙达拉特旗Dalad Banner,NMG	2016/7/26	110°44′25.4″	40°11′50.9″	1 046
P66	内蒙达拉特旗Dalad Banner,NMG	2016/7/26	111°7′21.4″	40°11′57.4″	1 047
P68	内蒙苏尼特左旗Sonid Left Banner,NMG	2016/7/28	112°58′43.7″	43°12′43.8″	1 040
P75	内蒙苏尼特左旗Sonid Left Banner,NMG	2016/7/27	113°58′42.7″	43°40′29.7″	1 080
P77	内蒙苏尼特左旗Sonid Left Banner,NMG	2016/7/27	114°10′18.4″	43°30′55.3″	1 074
P87	内蒙正香白旗Zhengxiangbai Banner,NMG	2016/7/27	114°49′0.7″	42°33′20.9″	1 211

性状 Character	极差 Range	最小值 Minimum	最大值 Maximum	平均值 Mean	标准差 Std. Deviation	变异系数 Coefficient of variation(%)
株高Plant height（cm）	151.50	75.80	227.30	139.99	27.76	19.83
花序长度Length of spike（cm）	66.90	15.10	82.00	50.37	11.46	22.75
旗叶长度Length of flag leaf（cm）	49.40	19.90	69.30	44.30	10.55	23.81
旗叶宽度Width of flag leaf（cm）	1.00	0.40	1.40	0.82	0.20	24.39
旗叶长宽比Length-width ratio of flag leaf	83.04	21.16	104.20	56.61	16.79	29.66
小穗长度Length of spikelet（cm）	1.00	1.00	2.00	1.13	0.11	9.73
第一颖长Length of first glume（cm）	0.80	0.80	1.50	0.99	0.13	13.13
第二颖长Length of second glume（cm）	1.00	1.00	2.00	1.09	0.11	10.09
颖脉数Veins of glume	5.00	1.00	6.00	3.80	0.97	25.53
外稃长度Length of first lemma（cm）	0.70	0.80	1.50	0.97	0.11	11.34
外稃脉数Veins of lemma	5.00	2.00	7.00	4.74	1.02	21.52
内稃长度Length of palea（cm）	0.60	0.70	1.20	0.92	0.09	9.78

		平方和 ss	自由度 df	均方 MS	F	P-value	显著性 Significance
花序长度 Length of spike（cm）	居群间Inter-population	9 341.056	20	467.053	8.371	0.000	**
	居群内Inner population	4 965.698	89	55.794
	总数Total	14 306.754	109
株高 Plant height（cm）	居群间Inter-population	56 110.031	20	2 805.502	8.958	0.000	**
	居群内Inner population	27 873.832	89	313.189
	总数Total	83 983.864	109
旗叶长度 Length of flag leaf（cm）	居群间Inter-population	5 141.815	20	257.091	3.274	0.000	**
	居群内Inner population	6 987.885	89	78.516
	总数Total	12 129.701	109
旗叶长宽比 Length-width ratio of flag leaf	居群间Inter-population	8 958.194	20	447.910	1.832	0.029	*
	居群内Inner population	21 761.084	89	244.507
	总数Total	30 719.279	109
旗叶宽度 Width of flag leaf（cm）	居群间Inter-population	2.430	20	0.122	5.724	0.000	**
	居群内Inner population	1.889	89	0.021
	总数Total	4.320	109
小穗长度 Length of spikelet（cm）	居群间Inter-population	0.822	20	0.041	6.031	0.000	**
	居群内Inner population	0.606	89	0.007
	总数Total	1.428	109
第一颖长 Length of first glume（cm）	居群间Inter-population	0.986	20	0.049	4.438	0.000	**
	居群内Inner population	0.988	89	0.011
	总数Total	1.974	109
第二颖长 Length of second glume（cm）	居群间Inter-population	0.738	20	0.037	4.986	0.000	**
	居群内Inner population	0.659	89	0.007
	总数Total	1.397	109
颖脉数 Veins of glume	居群间Inter-population	33.350	20	1.668	2.174	0.007	*
	居群内Inner population	68.250	89	0.767
	总数Total	101.600	109
外稃长度 Length of first lemma（cm）	居群间Inter-population	0.568	20	0.028	3.504	0.000	**
	居群内Inner population	0.721	89	0.008
	总数Total	1.288	109
外稃脉数 Veins of lemma	居群间Inter-population	39.938	20	1.997	2.421	0.002	**
	居群内Inner population	73.417	89	0.825
	总数Total	113.355	109
内稃长度 Length of palea（cm）	居群间Inter-population	0.302	20	0.015	2.117	0.009	**
	居群内Inner population	0.635	89	0.007
	总数Total	0.937	109

因素 Factor	主成分1 Principal component 1	主成分2 Principal component 2	主成分3 Principal component 3	主成分4 Principal component 4
株高Plant height（cm）	0.679	0.474	-0.006	0.446
花序长度Length of spike（cm）	0.525	0.485	0.264	0.271
旗叶长度Length of flag leaf（cm）	0.562	0.680	-0.109	-0.012
旗叶宽度Width of flag leaf（cm）	0.031	0.750	0.549	-0.254
旗叶长宽比Length-width ratio of flag leaf	0.505	-0.174	-0.738	0.289
小穗长度Length of spikelet（cm）	0.935	-0.129	0.090	-0.159
第一颖长Length of first glume（cm）	0.912	-0.039	-0.155	-0.012
第二颖长Length of second glume（cm）	0.958	-0.058	-0.015	-0.097
颖脉数Veins of glume	0.136	-0.421	0.363	0.643
外稃长度Length of first lemma（cm）	0.618	-0.437	0.187	-0.414
外稃脉数Veins of lemma	0.180	-0.512	0.605	0.282
内稃长度Length of palea（cm）	0.695	-0.379	0.113	-0.299
特征值Total	4.848	2.311	1.505	1.209
贡献率% of Variance	40.399	19.261	12.538	10.079
累计贡献率Cumulative（%）	40.399	59.660	72.198	82.277

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