Changes in flowering resource allocation of Saussurea dzeurensis with elevations

doi:10.17521/cjpe.2015.0086

Abstract

Abstract: Aims

Our objective is to study the effect of elevation on the reproductive allocation and sexual allocation of Saussurea dzeurensis during the flowering season.

Methods

We used the field investigation method and dry mass method to evaluate morphological characteristics of S. dzeurensis at different elevations.

Important findings

Elevation had a significant impact on the biomass and resource allocation of S. dzeurensis; reproductive allocation and male allocation were positively correlated with elevation, but vegetative allocation and female allocation were negatively correlated with elevation; there was a trade-off of resource allocation between capitulum number and mass, between reproductive allocation and vegetative allocation, and between male allocation and female allocation; When resources were limiting, the resource input of every structure of S. dzeurensis was balanced by increasing reproductive allocation and sexual allocation so that the plant can adapt to the stressful environment and have high rate of reproductive success.

Key words: elevation, reproductive allocation, Saussurea dzeurensis, sexual allocation, trade-off

WANG Yi-Feng,JIN Jie,HOU Hong-Hong,ZHAO Bo,CAO Jia-Hao,LI Xiao-Jiao. Changes in flowering resource allocation of Saussurea dzeurensis with elevations[J]. Chin J Plan Ecolo, 2015, 39(9): 901-908.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0086

https://www.plant-ecology.com/EN/Y2015/V39/I9/901

Figures/Tables 8

References 34

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种群 Population	采集日期 Collection date (year-month-day)	采集地点 Collection site	海拔 Elevation (m)	经纬度 Longitude and latitude	生境 Habitat
1	2013-8-21	夏河至合作途中 On the way from Xiahe to Hezuo	2 750	102.61° E, 36.45° N	山坡灌丛 Hillside shrub
2	2013-8-21	夏河至合作途中 On the way from Xiahe to Hezuo	2 750	102.60° E, 36.45° N	山坡灌丛 Hillside shrub
3	2013-8-22	合作扎油沟 Zhayou furrow in Hezuo	2 900	102.90° E, 36.87° N	灌丛 Shrub
4	2013-8-22	合作扎油沟 Zhayou furrow in Hezuo	2 900	102.81° E, 36.93° N	山坡草地 Hillside meadow
5	2013-8-22	合作当周沟 Dangzhou furrow in Hezuo	3 050	103.42° E, 34.32° N	山坡灌丛 Hillside shrub
6	2013-8-22	合作当周沟 Dangzhou furrow in Hezuo	3 050	103.41° E, 34.32° N	山坡灌丛 Hillside shrub
7	2013-8-23	卓尼大峪沟 Dayu furrow in Jonê	3 200	102.89° E, 35.95° N	山坡草地 Hillside meadow
8	2013-8-23	卓尼大峪沟 Dayu furrow in Jonê	3 200	102.86° E, 35.84° N	灌丛 Shrub
9	2013-8-23	碌曲至玛曲途中 On the way from Luqu to Maqu	3 300	103.35° E, 34.57° N	山坡草地 Hillside meadow
10	2013-8-23	碌曲至玛曲途中 On the way from Luqu to Maqu	3 300	103.30° E, 34.52° N	山坡草地 Hillside meadow
11	2013-8-24	玛曲拱坝四队 Gongbai Fourst Team in Maqu	3 500	103.31° E, 34.52° N	灌丛 Shrub
12	2013-8-24	玛曲拱坝四队 Gongbai Fourst Team in Maqu	3 500	103.32° E, 34.53° N	灌丛 Shrub
13	2013-8-24	玛曲金矿附近 Close by gold ore in Maqu	3 600	103.48° E, 34.47° N	草地 Meadow
14	2013-8-24	玛曲金矿附近 Close by gold ore in Maqu	3 600	103.45° E, 34.49° N	草地 Meadow
15	2013-8-24	玛曲阿万仓大山 Awancang Mountain in Maqu	3 700	102.40° E, 34.48° N	山坡草地 Hillside meadow
16	2013-8-24	玛曲阿万仓大山 Awancang Mountain in Maqu	3 700	102.41° E, 34.50° N	山坡草地 Hillside meadow

种群 Population	采集日期 Collection date (year-month-day)	采集地点 Collection site	海拔 Elevation (m)	经纬度 Longitude and latitude	生境 Habitat
1	2013-8-21	夏河至合作途中 On the way from Xiahe to Hezuo	2 750	102.61° E, 36.45° N	山坡灌丛 Hillside shrub
2	2013-8-21	夏河至合作途中 On the way from Xiahe to Hezuo	2 750	102.60° E, 36.45° N	山坡灌丛 Hillside shrub
3	2013-8-22	合作扎油沟 Zhayou furrow in Hezuo	2 900	102.90° E, 36.87° N	灌丛 Shrub
4	2013-8-22	合作扎油沟 Zhayou furrow in Hezuo	2 900	102.81° E, 36.93° N	山坡草地 Hillside meadow
5	2013-8-22	合作当周沟 Dangzhou furrow in Hezuo	3 050	103.42° E, 34.32° N	山坡灌丛 Hillside shrub
6	2013-8-22	合作当周沟 Dangzhou furrow in Hezuo	3 050	103.41° E, 34.32° N	山坡灌丛 Hillside shrub
7	2013-8-23	卓尼大峪沟 Dayu furrow in Jonê	3 200	102.89° E, 35.95° N	山坡草地 Hillside meadow
8	2013-8-23	卓尼大峪沟 Dayu furrow in Jonê	3 200	102.86° E, 35.84° N	灌丛 Shrub
9	2013-8-23	碌曲至玛曲途中 On the way from Luqu to Maqu	3 300	103.35° E, 34.57° N	山坡草地 Hillside meadow
10	2013-8-23	碌曲至玛曲途中 On the way from Luqu to Maqu	3 300	103.30° E, 34.52° N	山坡草地 Hillside meadow
11	2013-8-24	玛曲拱坝四队 Gongbai Fourst Team in Maqu	3 500	103.31° E, 34.52° N	灌丛 Shrub
12	2013-8-24	玛曲拱坝四队 Gongbai Fourst Team in Maqu	3 500	103.32° E, 34.53° N	灌丛 Shrub
13	2013-8-24	玛曲金矿附近 Close by gold ore in Maqu	3 600	103.48° E, 34.47° N	草地 Meadow
14	2013-8-24	玛曲金矿附近 Close by gold ore in Maqu	3 600	103.45° E, 34.49° N	草地 Meadow
15	2013-8-24	玛曲阿万仓大山 Awancang Mountain in Maqu	3 700	102.40° E, 34.48° N	山坡草地 Hillside meadow
16	2013-8-24	玛曲阿万仓大山 Awancang Mountain in Maqu	3 700	102.41° E, 34.50° N	山坡草地 Hillside meadow