群体表型性状研究揭示环境与遗传因素对霍山石斛表型及物种分类的影响

焦振彬, 罗毅波

Effects of environmental and genetic factors on phenotypic traits and species classification of Dendrobium huoshanense

Zhenbin Jiao, Yibo Luo

表1 野生及不同环境下F₁代和F₂代霍山石斛假鳞茎与花部器官表型性状差异

Table 1 Differences in phenotypic traits of pseudobulbs and flowers among Dendrobium huoshanense in wild-type, F₁ and F₂ generations of D. huoshanense under different environments

	野生型 Wild type	F₁代 F₁ generation		F₂代 F₂ generation
	野生型 Wild type	林间 Woodland	温室 Greenhouse	林间 Woodland	温室 Greenhouse
假鳞茎数量 Number of pseudobulbs	93	202	355	221	500
假鳞茎茎长 Pseudobulb length (cm)	1.84 ± 0.85^A	5.53 ± 2.59^BE	5.80 ± 2.65^BCE	4.92 ± 2.28^BD	5.77 ± 2.83^BCE
假鳞茎直径 Pseudobulb diameter (cm)	0.45 ± 0.07^A	0.70 ± 0.12^B	0.69 ± 0.13^B	0.58 ± 0.13^C	0.59 ± 0.13^C
假鳞茎茎长直径比 Length/diameter ratio of pseudobulb	4.17 ± 2.03^A	7.98 ± 3.70^B	8.64 ± 4.24^B	9.13 ± 5.07^BC	10.16 ± 5.55^C
假鳞茎节长 Internode length of pseudobulb (cm)	0.65 ± 0.18^A	1.14 ± 0.32^BE	1.26 ± 0.36^CE	1.18 ± 0.30^BcDE	1.20 ± 0.39^BCDE
假鳞茎节数 Number of pseudobulb internodes	3.67 ± 0.81^A	6.02 ± 1.46^BE	5.75 ± 1.28^Bce	5.48 ± 1.40^C	6.05 ± 1.62^BDE
花朵数量 Number of flowers	2	26	107	31	151
中萼片长 Dorsal sepal length (cm)	1.35 ± 0.07^A	1.41 ± 0.16^AB	1.29 ± 0.19^AC	1.51 ± 0.26^ABD	1.44 ± 0.23^ABD
中萼片宽 Dorsal sepal width (cm)	0.60 ± 0^AE	0.68 ± 0.09^Be	0.66 ± 0.11^BC	0.66 ± 0.10^aBCDE	0.61 ± 0.09^AbDE
中萼片长宽比 Length/width ratio of dorsal sepal	2.25 ± 0.11^A	2.11 ± 0.34^AB	2.02 ± 0.34^ABC	2.29 ± 0.38^ABD	2.39 ± 0.44^AD
花瓣长 Petal length (cm)	1.40 ± 0^A	1.37 ± 0.15^AB	1.28 ± 0.21^BC	1.47 ± 0.24^ABD	1.42 ± 0.22^ABD
花瓣宽 Petal width (cm)	0.80 ± 0^A	0.80 ± 0.11^A	0.77 ± 0.14^A	0.76 ± 0.13^AD	0.68 ± 0.13^d
花瓣长宽比 Length/width ratio of petal	1.75 ± 0^A	1.74 ± 0.28^AB	1.71 ± 0.30^ABC	1.99 ± 0.41^aBcD	2.13 ± 0.39^D
花梗长 Pedicel length (cm)	2.15 ± 0.07^A	1.93 ± 0.46^A	2.11 ± 0.44^A	2.07 ± 0.43^A	2.17 ± 0.51^A