Chin J Plant Ecol ›› 2011, Vol. 35 ›› Issue (1): 56-65.DOI: 10.3724/SP.J.1258.2011.00056
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DAI Pan-Feng1,2, TAN Dun-Yan1,*()
Received:
2010-08-29
Accepted:
2010-10-11
Online:
2011-08-29
Published:
2011-01-24
Contact:
TAN Dun-Yan
DAI Pan-Feng, TAN Dun-Yan. Floral biological characteristics of Saussurea involucrata in relation to ecological adaptation[J]. Chin J Plant Ecol, 2011, 35(1): 56-65.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2011.00056
项目 Item | 参数 Parameter | 2003 | 2005 | 2007 |
---|---|---|---|---|
个体水平 Individual level | ||||
始花日期及当日花数(n为开花植株数) Date of initial flowering period and day flower number (n, flowering plant number) | 日期 Date (month-day) | 6-23 | 6-20 | 6-15 |
平均花数 Mean flower number | 14 ± 3 (n = 2) | 17 ± 4 (n = 3) | 15 ± 3 (n = 2) | |
变异范围 Variation range (d) | 11-17 | 17 | 12-18 | |
花期持续时间 Anthesis duration period | 持续时间 Duration (d) | 42 | 45 | 46 |
变异范围 Variation range (d) | 34-47 | 35-56 | 38-51 | |
盛花期开始时间及当日花数 Date of peak flowering period and flower number | 日期 Date (month-day) | 7-8 | 7-3 | 7-5 |
平均花数 Mean flower number | 230 | 216 | 228 | |
变异范围 Variation range (d) | 142-263 | 156-247 | 135-259 | |
群体水平 Population level | ||||
始花日期及当日花数(n为开花植株数) Date of initial flowering period and flower number (n, flowering plant number) | 日期 Date (month-day) | 6-27 | 6-23 | 6-17 |
平均花数 Mean flower number | 13 ± 3 (n = 3) | 15 ± 3 (n = 5) | 14 ± 3 (n = 4) | |
花期持续时间 Anthesis duration period | 持续时间 Duration (d) | 74 | 69 | 86 |
盛花期开始时间及当日花数 Date of peak flowering period and flower number | 日期 Date (month-day) | 7-11 | 7-3 | 7-8 |
平均花数 Mean flower number | 218 | 237 | 243 | |
末花期开始时间及当日花数 Date of final flowering period and flower number | 日期 Date (month-day) | 9-2 | 8-29 | 8-24 |
平均花数 Mean flower number | 2 | 5 | 4 |
Table 1 Flowering phenology of Saussurea involucrata at the individual and population levels in 2003, 2005 and 2007 (mean ± SD)
项目 Item | 参数 Parameter | 2003 | 2005 | 2007 |
---|---|---|---|---|
个体水平 Individual level | ||||
始花日期及当日花数(n为开花植株数) Date of initial flowering period and day flower number (n, flowering plant number) | 日期 Date (month-day) | 6-23 | 6-20 | 6-15 |
平均花数 Mean flower number | 14 ± 3 (n = 2) | 17 ± 4 (n = 3) | 15 ± 3 (n = 2) | |
变异范围 Variation range (d) | 11-17 | 17 | 12-18 | |
花期持续时间 Anthesis duration period | 持续时间 Duration (d) | 42 | 45 | 46 |
变异范围 Variation range (d) | 34-47 | 35-56 | 38-51 | |
盛花期开始时间及当日花数 Date of peak flowering period and flower number | 日期 Date (month-day) | 7-8 | 7-3 | 7-5 |
平均花数 Mean flower number | 230 | 216 | 228 | |
变异范围 Variation range (d) | 142-263 | 156-247 | 135-259 | |
群体水平 Population level | ||||
始花日期及当日花数(n为开花植株数) Date of initial flowering period and flower number (n, flowering plant number) | 日期 Date (month-day) | 6-27 | 6-23 | 6-17 |
平均花数 Mean flower number | 13 ± 3 (n = 3) | 15 ± 3 (n = 5) | 14 ± 3 (n = 4) | |
花期持续时间 Anthesis duration period | 持续时间 Duration (d) | 74 | 69 | 86 |
盛花期开始时间及当日花数 Date of peak flowering period and flower number | 日期 Date (month-day) | 7-11 | 7-3 | 7-8 |
平均花数 Mean flower number | 218 | 237 | 243 | |
末花期开始时间及当日花数 Date of final flowering period and flower number | 日期 Date (month-day) | 9-2 | 8-29 | 8-24 |
平均花数 Mean flower number | 2 | 5 | 4 |
Fig. 3 The flowering process of a floret in Saussurea involucrata (drew by Tan Li-Xia). I, Floret traits during the seven stages of flowering process. II, Floret sketch structures in vertical section corresponding to each stage of I.
Fig. 4 Quantitative changes in floret characteristics during the flowering process in Saussurea involucrata. An, length of anther; Ct, diameter of corolla tube; Cu, length of corolla tubula; Fi, length of filament; Sm, length of stigma lobes; St, length of style.
Fig. 5 Dynamics of nectar secretion in florets of Saussurea involucrata. A, Diurnal change of nectar volume per floret. B, Diurnal change of sugar concentration per floret.
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