Biodiv Sci ›› 2021, Vol. 29 ›› Issue (10): 1321-1335. DOI: 10.17520/biods.2021081
• Original Papers: Plant Diversity • Previous Articles Next Articles
Yeqin Du1, Di Zhang1, Sai Wang1, Lei Wang1, Xingfu Yan2,*(), Zhanhui Tang1,*()
Received:
2021-03-07
Accepted:
2021-06-25
Online:
2021-10-20
Published:
2021-10-20
Contact:
Xingfu Yan,Zhanhui Tang
Yeqin Du, Di Zhang, Sai Wang, Lei Wang, Xingfu Yan, Zhanhui Tang. Sexual system characteristics of Lilium concolor var. megalanthum in peatland[J]. Biodiv Sci, 2021, 29(10): 1321-1335.
Fig. 1 Morphological characteristics of Lilium concolor var. megalanthum. A, No-flowering plant; B, Flowering plant; C, The whole plant; D, Fruits and seeds; E, Bulb.
Fig. 2 Flower morphological characteristics of two different phenotypes in natural population of Lilium concolor var. megalanthum. A, Hermaphroditic flower; B, Male flower; C?E, Rudimentary pistil during flowering; F, Normally well-developed pistil.
年份 Year | 植株比例 Percentage of plant (%) | 密度 Density (plants/m2) | |||||
---|---|---|---|---|---|---|---|
两性花植株 Hermaphrodite | 雄花植株 Male | 总计 Total | 两性花植株 Hermaphrodite | 雄花植株 Male | 总计 Total | ||
2012 (N = 1,530) | 83.66 ± 0.53a | 16.34 ± 0.53a | 100 | 0.13 ± 0.04a | 0.02 ± 0.01a | 0.15 ± 0.05a | |
2020 (N = 666) | 60.86 ± 3.51b | 39.14 ± 3.51b | 100 | 0.04 ± 0.01a | 0.02 ± 0.00a | 0.06 ± 0.01a |
Table 1 Interannual variation of percentage and distribution density of two sexual phenotypes of Lilium concolor var. megalanthum (Mean ± SE)
年份 Year | 植株比例 Percentage of plant (%) | 密度 Density (plants/m2) | |||||
---|---|---|---|---|---|---|---|
两性花植株 Hermaphrodite | 雄花植株 Male | 总计 Total | 两性花植株 Hermaphrodite | 雄花植株 Male | 总计 Total | ||
2012 (N = 1,530) | 83.66 ± 0.53a | 16.34 ± 0.53a | 100 | 0.13 ± 0.04a | 0.02 ± 0.01a | 0.15 ± 0.05a | |
2020 (N = 666) | 60.86 ± 3.51b | 39.14 ± 3.51b | 100 | 0.04 ± 0.01a | 0.02 ± 0.00a | 0.06 ± 0.01a |
Fig. 3 The distribution of phenotypic gender in the populations of Lilium concolor var. megalanthum. A?C, The three populations surveyed in 2012; D?F, The three populations surveyed in 2020.
Fig. 4 Spatial distribution of individuals of different sexual phenotypes of Lilium concolor var. megalanthum in sample plots in 2020. A, Plot 1; B, Plot 2; C, Plot 3.
指标 Parameters | 两性花植株 Hermaphrodite (N = 30) | 雄花植株 Male (N = 30) |
---|---|---|
株高 Plant height (cm) | 49.35 ± 1.15a | 44.45 ± 0.88b |
叶片数 Leaf number | 17.17 ± 0.44a | 12.77 ± 0.44b |
叶长 Leaf length (cm) | 6.70 ± 0.17a | 6.53 ± 0.12a |
叶宽 Leaf width (cm) | 0.73 ± 0.03a | 0.70 ± 0.02a |
基径 Base diameter (cm) | 0.23 ± 0.01a | 0.19 ± 0.01b |
花直径 Flower diameter (cm) | 5.64 ± 0.18a | 4.65 ± 0.15b |
花瓣长 Corolla length (cm) | 4.23 ± 0.10a | 3.52 ± 0.07b |
花瓣宽 Corolla width (cm) | 1.51 ± 0.04a | 1.18 ± 0.03b |
雄蕊长 Stamen length (cm) | 2.68 ± 0.04a | 2.47 ± 0.05b |
Table 2 Comparison of morphological characteristics between two sexual phenotypes of Lilium concolor var. megalanthum (Mean ± SE).
指标 Parameters | 两性花植株 Hermaphrodite (N = 30) | 雄花植株 Male (N = 30) |
---|---|---|
株高 Plant height (cm) | 49.35 ± 1.15a | 44.45 ± 0.88b |
叶片数 Leaf number | 17.17 ± 0.44a | 12.77 ± 0.44b |
叶长 Leaf length (cm) | 6.70 ± 0.17a | 6.53 ± 0.12a |
叶宽 Leaf width (cm) | 0.73 ± 0.03a | 0.70 ± 0.02a |
基径 Base diameter (cm) | 0.23 ± 0.01a | 0.19 ± 0.01b |
花直径 Flower diameter (cm) | 5.64 ± 0.18a | 4.65 ± 0.15b |
花瓣长 Corolla length (cm) | 4.23 ± 0.10a | 3.52 ± 0.07b |
花瓣宽 Corolla width (cm) | 1.51 ± 0.04a | 1.18 ± 0.03b |
雄蕊长 Stamen length (cm) | 2.68 ± 0.04a | 2.47 ± 0.05b |
Fig. 6 Dry weight of biomass of two sexual phenotypes of Lilium concolor var. megalanthum. *** P < 0.001. Different capital letters indicate significant differences in aboveground biomass, underground biomass, total biomass between hermaphrodite and male plant (P < 0.05).
Fig. 7 Biomass allocation of two sexual phenotypes of Lilium concolor var. megalanthum. ** P < 0.01. Different capital letters indicate significant differences in aboveground biomass allocation, underground biomass allocation between hermaphrodite and male plant (P < 0.05).
Fig. 9 Ordination and classification of phenotypic characteristics of two sexual phenotypes of Lilium concolor var. megalanthum. PH, Plant height; LN, Leaf number; LL, Leaf length; LW, Leaf width; BD, Base diameter; FD, Flower diameter; CL, Corolla length; CW, Corolla width; SL, Stamen length; SDW, Stem dry weight; LDW, Leaf dry weight; FDW, Flower dry weight; BDW, Bulb dry weight; RDW, Rhizome dry weight; FRDW, Fibrous root dry weight; AB, Aboveground biomass; UB, Underground biomass; TB, Total biomass.
授粉处理 Pollination treatments | 种子数量 No. of seeds | 种子千粒重 Thousand-seed weight (g) | 结籽率 Seed set (%) | 坐果率 Fruit set (%) | 果荚长 Capsule length (cm) | 果荚宽 Capsule width (cm) |
---|---|---|---|---|---|---|
自花授粉 Self-pollination (N = 15) | 221 ± 33a | 1.73 ± 0.43a | 8.04 ± 3.22b | 53.33b | 2.26 ± 0.25a | 1.32 ± 0.09a |
自然状态授粉 Natural pollination (N = 16) | 235 ± 11a | 1.94 ± 0.15a | 46.45 ± 4.95a | 100a | 2.27 ± 0.11a | 1.37 ± 0.04a |
异花授两性花粉 Hermaphrodite-hermapheodite pollination (N = 13) | 264 ± 66a | 1.39 ± 0.17a | 52.03 ± 6.10a | 92.31a | 2.04 ± 0.16a | 1.34 ± 0.07a |
异花授雄性花粉 Male-hermapheodite pollination (N = 12) | 195 ± 18a | 1.66 ± 0.12a | 43.06 ± 6.40a | 100a | 1.86 ± 0.13a | 1.25 ± 0.04a |
Table 3 Comparison of fruit set of Lilium concolor var. megalanthum with different pollination treatments (Mean ± SE)
授粉处理 Pollination treatments | 种子数量 No. of seeds | 种子千粒重 Thousand-seed weight (g) | 结籽率 Seed set (%) | 坐果率 Fruit set (%) | 果荚长 Capsule length (cm) | 果荚宽 Capsule width (cm) |
---|---|---|---|---|---|---|
自花授粉 Self-pollination (N = 15) | 221 ± 33a | 1.73 ± 0.43a | 8.04 ± 3.22b | 53.33b | 2.26 ± 0.25a | 1.32 ± 0.09a |
自然状态授粉 Natural pollination (N = 16) | 235 ± 11a | 1.94 ± 0.15a | 46.45 ± 4.95a | 100a | 2.27 ± 0.11a | 1.37 ± 0.04a |
异花授两性花粉 Hermaphrodite-hermapheodite pollination (N = 13) | 264 ± 66a | 1.39 ± 0.17a | 52.03 ± 6.10a | 92.31a | 2.04 ± 0.16a | 1.34 ± 0.07a |
异花授雄性花粉 Male-hermapheodite pollination (N = 12) | 195 ± 18a | 1.66 ± 0.12a | 43.06 ± 6.40a | 100a | 1.86 ± 0.13a | 1.25 ± 0.04a |
授粉处理 Pollination treatments | 萌发率 Germination rate (%) | 初始萌发时间 Initial germination time (d) | 萌发势 Germination potential (%) | 萌发指数 Germination index |
---|---|---|---|---|
自花授粉 Self-pollination (N = 15) | 95.84 ± 3.15a | 7.75 ± 0.25a | 24.17 ± 3.15a | 2.79 ± 0.15a |
自然状态授粉 Natural pollination (N = 16) | 95.83 ± 2.50a | 9.00 ± 0.58a | 25.83 ± 2.85a | 2.34 ± 0.07a |
异花授两性花粉 Hermaphrodite-hermapheodite pollination (N = 13) | 99.17 ± 0.83a | 8.75 ± 0.48a | 36.67 ± 7.20a | 2.61 ± 0.27a |
异花授雄性花粉 Male-hermapheodite pollination (N = 12) | 89.17 ± 5.67a | 9.00 ± 0.41a | 28.34 ± 6.74a | 2.21 ± 0.24a |
Table 4 Seed germination characteristics of Lilium concolor var. megalanthum with different pollination treatments (Mean ± SE)
授粉处理 Pollination treatments | 萌发率 Germination rate (%) | 初始萌发时间 Initial germination time (d) | 萌发势 Germination potential (%) | 萌发指数 Germination index |
---|---|---|---|---|
自花授粉 Self-pollination (N = 15) | 95.84 ± 3.15a | 7.75 ± 0.25a | 24.17 ± 3.15a | 2.79 ± 0.15a |
自然状态授粉 Natural pollination (N = 16) | 95.83 ± 2.50a | 9.00 ± 0.58a | 25.83 ± 2.85a | 2.34 ± 0.07a |
异花授两性花粉 Hermaphrodite-hermapheodite pollination (N = 13) | 99.17 ± 0.83a | 8.75 ± 0.48a | 36.67 ± 7.20a | 2.61 ± 0.27a |
异花授雄性花粉 Male-hermapheodite pollination (N = 12) | 89.17 ± 5.67a | 9.00 ± 0.41a | 28.34 ± 6.74a | 2.21 ± 0.24a |
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