SIZE-DEPENDENT REPRODUCTIVE OUTPUT AND LIFE-HISTORY STRATEGIES IN FOUR EPHEMERAL SPECIES OF TRIGONELLA

doi:10.17521/cjpe.2005.0124

Abstract

Abstract:

Phenological characteristics and patterns of biomass allocation were studied in four ephemeral species of Trigonella (T. cancellata, T. arcuata, T. monantha and T. orthoceras) from the Zhungaer desert. The results showed that germination strategies were diverse among species. Seed germination occurred in the spring, summer and autumn in all four species, but was most prevalent in the spring and autumn. The germination time of seeds was very closely related to environmental factors, such as temperature and precipitation. There were no obvious interspecific differences in germination time. Plant growth was quick and the life cycle short in all four species. The fruits maturate before the arrival of the arid summer season. All four species are monocarpic, and their life-history strategy can be described as that of escaping aridity. The reproductive yield of plants germinated in the spring and autumn was maximized by an instantaneous switch from vegetative growth to reproductive growth after a short period of vegetative growth. The four species allocate a high proportion of carbon to reproductive output and was 62.3%, 51.9%, 54.3% and 58.3% for the four species, and the absolute measures of reproductive output were size-dependent. The reproductive output increased with plant size, with the r-value 0.989, 0.935, 0.720 and 0.924 in all the four species (p<0.001). There were significant differences in the size (p<0.01) and the reproductive output (p<0.05,p<0.01) among plants that germinated in different seasons. The plants that germinated in the spring were smaller and their reproductive output lower than those hat germinated in the autumn, but the difference in the proportion of reproductive allocation was not significant (p>0.05). These results indicate that differences in reproductive output can be explained by size differences in plants from different germination times. Finally, we discussed the life-history strategies of the four ephemeral species and analyzed their differences based on individual size, survival ability and reproductive output of plants germinated during different season, and their adaptation strategies to the arid environment of the Zhungaer desert.

Key words: Zhungaer desert, Ephemeral plant, Trigonella, Biomass allocation, Size-dependence, Life-history strategy

YAO Hong, TAN Dun-Yan. SIZE-DEPENDENT REPRODUCTIVE OUTPUT AND LIFE-HISTORY STRATEGIES IN FOUR EPHEMERAL SPECIES OF TRIGONELLA[J]. Chin J Plant Ecol, 2005, 29(6): 954-960.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2005.0124

https://www.plant-ecology.com/EN/Y2005/V29/I6/954

Figures/Tables 5

References 33

[1]	Abrahamson WG, Gadgil M (1973). Growth form and reproductive effort in goldenrods (Solidago: Compositae). The American Naturalist, 107,651-661.
[2]	Abrahamson WG (1977). Resource allocation and growth in Impotiens capensis (Balsaminaceae) in two habitats. Bulletin of the Torrey Botanical Club, 104,160-164.
[3]	Abrahamson WG (1979). Pattern of resource allocation in wild flower population of fields and wood. American Journal of Botany, 66,71-79.
[4]	Ashmum JW, Brown RL, Pitelka LF (1985). Biomass allocation in Aster acumintus variation within and among population over 5 years. Canadian Journal of Botany, 63,2035-2043.
[5]	Avila-Sakar G, Krupnick GA, Stephenson AG (2001). Growth and resource allocation in Cucurbita pepo ssp. Texana: effects of fruit removal. Journal of Plant Science, 162,1089-1095.
[6]	Bazzaz FA, Chiariello NR, Coley PD, Pitelka LF (1987). Allocation resources to reproduction and defense. BioScience, 37,58-67.
[7]	Brock MA (1983). Reproductive allocation in annual and perennial species of the submerged aquatic halophyte Ruppia. Journal of Ecology, 71,811-818.
[8]	Fabbro T, Kørner C (2004). Altitudinal differences in flower traits and reproductive allocation. Flora, 199,70-81.
[9]	Gutterman Y (1993). Seed Germination in Desert Plants. Springer-Verlag, Berlin. DOI URL PMID
[10]	Harper JL (1977). The Population Biology of Plants. Academic Press, London.
[11]	Huang PY (黄培毅) (2002). Excused Irrigation Vegetation and its Restoration in Desert (干旱区免灌植被及其恢复). Science Press, Beijing. (in Chinese)
[12]	King D, Roughgarden J (1983). Energy allocation patterns of the California grassland annuals Plantago erecta and Clarkia rubicunda. Ecology, 64,16-24. DOI URL
[13]	Klinkhamer PGL, de Jong TJ, Metz H (1997). Sex and size in cosexual plants. Trends in Ecology and Evolution, 12,260-265. URL PMID
[14]	MacArthur RH, Wilson EO (1967). The Theory of Island Biogeography. Princeton University Press, Princeton.
[15]	Mayer AM, Poljakoff-Mayber A (1982). The Germination of Seed 3rd edn. Pergamon, Oxford.
[16]	Mendez M, Obeso JR (1993). Size-dependent reproductive and vegetative allocation in Arum italicum (Araceae). Canadian Journal of Botany, 71,309-314.
[17]	Pitelka LF (1977). Energy allocation in annual and perennial lupines ( Lupinus: Leguminosae). Ecology, 58,1055-1065.
[18]	Rameau C, Gouyon PH (1991). Resource allocation to growth, reproduction and survival in Gladiolus: the cost of male function. Journal of Evolutionary Biology, 14,291-307.
[19]	Reekie EG (1998). An explanation for size-dependent reproductive allocation in Plantago major. Canadian Journal of Botany, 76,43-50.
[20]	Samson DA, Werk KS (1986). Size-dependent effects in the analysis of reproductive effort in plants. The American Naturalist, 127,667-680.
[21]	Shem-Tov S, Gutterman D (2003). Influence of regime and photoperiod treatments on resource allocation and reproductive successes of two annuals occurring in the Negev Desert of Israel. Journal of Arid Environments, 55,123-142.
[22]	Susko DJ, Lovett-Doust L (2000). Plant-size and fruit-position effects on reproductive allocation in Alliaria petiolata (Brassicaceae). Canadian Journal of Botany, 78,1398-1407.
[23]	Thompson BK, Weiner J, Warwick SI (1991). Size-dependent reproductive output in agricultural weeds. Canadian Journal of Botany, 69,442-446.
[24]	Tuomi J (1983). Alternative concepts of reproductive effort, cost of reproduction and selection in life-history evolution. American Zoology, 23,25-34.
[25]	van Noordwijk AJ, de Jong G (1986). Acquisition and allocation of resources: their influence on variation in life history tactics. The American Naturalist, 128,137-142.
[26]	Vignolio OR, Fernandez ON, Maceira NO (2002). Biomass allocation to vegetative and reproductive organs in Lotus glaber and L. corniculatus (Fabaceae). Australian Journal of Botany, 50,75-82.
[27]	Zhang DY (张大勇) (2004). The Evolution of Life-History and Reproductive Ecology of Plant (植物生活史进化与繁殖生态学). Science Press, Beijing. (in Chinese)
[28]	Zhang LY (张立运) (1985). A preliminary study on the short-lived plant of Mosowan district of Xinjiang. Acta Phytoecologica et Geobotanica Sinica (植物生态学与地植物学丛刊), 9,213-221. (in Chinese with English abstract)
[29]	Zhao ZG (赵志刚), Du GZ (杜国祯), Ren QJ (任青吉) (2004). Size-dependent reproduction and sex allocation in five species of Ranunculaceae. Acta Phytoecologica Sinica (植物生态学报), 28,9-16. (in Chinese with English abstract)
[30]	Zu YG (祖元刚), Zhang WH (张文辉), Yan XF (阎秀峰), Ge S (葛颂) (1999). Conservation Biology of Endangered adenophora (濒危植物裂叶沙参保护生物学研究). Science Press, Beijing. (in Chinese)
[31]	Wan MW (宛敏渭), Liu XZ (刘秀珍) (1987). The Observation Methods of Phenology in China (中国物候观测方法). Science Press, Beijing. (in Chinese)
[32]	Welham CVJ, Setter RA (1998). Comparison of size-dependent reproductive effort in two dandelion ( Taraxacum officinale) populations. Canadian Journal of Botany, 76,166-173. DOI URL
[33]	Worley AC, Harder LD (1996). Size-dependent resource allocation and costs of reproduction in Pinguicula vulgaris. Journal of Ecology, 84,195-206.

		不同萌发时间的植株 Germination time		f	显著性水平 p-value
		秋萌株 Autumn germinated plants	春萌株 Spring germinated plants	f	显著性水平 p-value
弯果胡卢巴 Trigonella arcuata 网脉胡卢巴 T. cancellata 单花胡卢巴 T. monantha 直果胡卢巴 T. orthoceras	营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA 营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA 营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA 营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA	0.436±0.115 0.641±0.222 0.745±0.114 0.569±0.066 1.126±0.164 0.615±0.037 0.127±0.019 0.142±0.011 0.548±0.031 0.103±0.014 0.135±0.025 0.536±0.024	0.071±0.005 0.081±0.010 0.511±0.025 0.090±0.015 0.120±0.022 0.566±0.038 0.045±0.006 0.044±0.003 0.522±0.038 0.046±0.003 0.042±0.003 0.475±0.029	10.143^** 6.382^* 4.042^ns 49.502^ 36.878^ 0.848^ns 17.072^ 76.974^ 0.277^ns 15.358^ 13.264^ 2.594^ns	0.003 0.016 0.052 0.000 0.000 0.363 0.000 0.000 0.602 0.000 0.001 0.116

		不同萌发时间的植株 Germination time		f	显著性水平 p-value
		秋萌株 Autumn germinated plants	春萌株 Spring germinated plants	f	显著性水平 p-value
弯果胡卢巴 Trigonella arcuata 网脉胡卢巴 T. cancellata 单花胡卢巴 T. monantha 直果胡卢巴 T. orthoceras	营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA 营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA 营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA 营养生长生物量 VB 生殖生物量 RB 生殖分配比率 RA	0.436±0.115 0.641±0.222 0.745±0.114 0.569±0.066 1.126±0.164 0.615±0.037 0.127±0.019 0.142±0.011 0.548±0.031 0.103±0.014 0.135±0.025 0.536±0.024	0.071±0.005 0.081±0.010 0.511±0.025 0.090±0.015 0.120±0.022 0.566±0.038 0.045±0.006 0.044±0.003 0.522±0.038 0.046±0.003 0.042±0.003 0.475±0.029	10.143^** 6.382^* 4.042^ns 49.502^ 36.878^ 0.848^ns 17.072^ 76.974^ 0.277^ns 15.358^ 13.264^ 2.594^ns	0.003 0.016 0.052 0.000 0.000 0.363 0.000 0.000 0.602 0.000 0.001 0.116