Sains Malaysiana 43(12)(2014): 1821–1826

 

The Importance of Population Origin and Reciprocal Heterogeneous Microhabitat on Clonal Propagation of Iris japonica Thunb.

(Kepentingan Populasi Asal dan Mikrohabitat Heterogen Resiprokal ke atas Propagasi Klon

Iris japonica Thunb.)

 

XUE-FENG MENG1, QING-YU LI2, ZHEN LI1, XIAO-JING WU1 & YONG-JIAN WANG1*

 

1College of Horticulture & Forestry Sciences, Huazhong Agricultural University

Wuhan 430070, R.P. China

 

2College of Urban Planning and Environmental Science, Xuchang University

Xuchang, 461000, R.P. China

 

Received: 19 December 2013/Accepted: 16 April 2014

 

ABSTRACT

A reciprocal transplant-replant experiment was carried out to investigate the clonal plasticity and local specialization of OAFE population (O type) and BF population (U type) of a clonal rhizome herb Iris japonica in contrasting reciprocal heterogeneous habitats on Jinyun Mountain. U Population had better performance of plant size and clonal propagation (including allocation to clonal propagation, daughter ramet and fine rhizome) in different reciprocal heterogeneous habitats than O population. Both the population origin and reciprocal spatial heterogeneous habitat had effects on clonal ramets and biomass of clonal components of experimental plants. The plasticity of clonal growth had difference in clonal components to balance High light-Low soil resources (water) (HL) or Low light-High soil resources (LH) due to the ecological isolation of the two I. japonica populations. Our findings indicated that two major types of patterns of spatial covariance of resources can have different effects on the growth and local variation of clonal plants.

 

Keywords: Clonal plant; clonal propagation; geneotype (G) × environment (E) interaction; plasticity; reciprocal heterogeneous habitat

 

ABSTRAK

Suatu eksperimen resiprokal pemindahan-tanam semula telah dijalankan untuk mengkaji keplastikan klon dan pengkhususan setempat populasi OAFE (jenis O) dan populasi BF (jenis U) daripada rhizom herba klon Iris japonica dalam pembezaan habitat heterogen resiprokal di Gunung Jinyun. Populasi U mempunyai prestasi yang lebih baik daripada populasi O daripada segi saiz tumbuhan dan propagasi klon (termasuk peruntukan untuk propagasi klon, anak ramet dan rhizom halus) dalam habitat heterogen resiprokal yang berlainan. Kedua-dua populasi asal dan reruang habitat heterogen mempunyai kesan ke atas ramet klon dan biomas komponen klon dalam tumbuhan yang dikaji. Keplastikan pertumbuhan klon menunjukkan perbezaan dalam komponen klon untuk mengimbangi sumber cahaya tinggi-tanah rendah (air) (HL) atau sumber tanah tinggi-cahaya rendah (LH) yang disebabkan oleh pengasingan ekologi kedua-dua populasiI. japonica tersebut. Hasil kajian kami menunjukkan bahawa dua corak utama kovarians reruang sumber boleh memberikan kesan yang berbeza pada pertumbuhan dan variasi tempatan bagi tumbuhan klon.

 

Kata kunci: Habitat heterogen resiprokal; interaksi geneotip (G) × persekitaran (E); keplastikan; propagasi klon; tumbuhan klon

REFERENCES

Guo, W., Song, Y.B. & Yu, F.H. 2011. Heterogeneous light supply affects growth and biomass allocation of the understory fern Diplopterygium glaucumat high patch contrast. PloS one 6: e27998.

He, W.M., Alpert, P., Yu, F.H., Zhang, L.L. & Dong, M. 2011. Reciprocal and coincident patchiness of multiple resources differentially affect benefits of clonal integration in two perennial plants. Journal of Ecology 99: 1202-1210.

Hutchings, M.J. & de Kroon, H. 1994. Foraging in plants: The role of morphological plasticity in resource acquisition. Advances in Ecological Research 25: 159-238.

Hutchings, M.J. & Wijesinghe, D.K. 2008. Performance of a clonal species in patchy environments: Effects of environmental context on yield at local and whole-plant scales. Evolutionary Ecology 22: 313-324.

Kanno, H. & Seiwa, K. 2004. Sexual vs. vegetative reproduction in relation to forest dynamics in the understorey shrub, Hydrangea paniculata(Saxifragaceae). Plant Ecology 170: 43-53.

Pluess, A.R. & Stöcklin, J. 2005. The importance of population origin and environment on clonal and sexual reproduction in the alpine plant Geum reptans. Functional Ecology 19: 228-237.

Pluess, A.R. & Stöcklin, J. 2004. Population genetic diversity of the clonal plant Geum reptans(Rosaceae) in the Swiss Alps. American Journal of Botany 91: 2013-2021.

Prati, D. & Schmid, B. 2000. Genetic differentiation of life-history traits within populations of the clonal plant Ranunculus reptans. Oikos 90: 442-456.

Rautiainen, P., Koivula, K. & Hyvärinen, M. 2004. The effect of within-genet and between-genet competition on sexual reproduction and vegetative spread in Potentilla anserinassp. egedii. Journal of Ecology 92: 505-511.

Schenk, H.J., Espino, S., Goedhart, C.M., Nordenstahl, M., Cabrera, H.I.M. & Jones, C.S. 2008. Hydraulic integration and shrub growth form linked across continental aridity gradients. Proceedings of the National Academy of Sciences USA 105: 11248-11253.

Wang, Y.J., Shi, X.P. & Zhong, Z.C. 2012a. Clonal diversity and genetic differentiation in rhizomatous herb, Iris japonica (Iridaceae) populations on Jinyun Mountain, southwest China. Sains Malaysiana41: 149-154.

Wang, Y.J., Shi, X.P., Peng, Y., Zhong, Z.C. & Tao, J.P. 2012b. Effects of fine-Scale pattern of dwarf bamboo on understorey species diversity in Abies faxonianaforest, Southwest, China. Sains Malaysiana41: 649-657.

Wang, Y.J., Shi, X.P & Zhong, Z.C. 2013. The relative importance of sexual reproduction and clonal propagation in rhizomatous herb Iris japonica Thunb. from two habitats of Jinyun Mountain, Southwest China. Russian Journal of Ecology 44: 199-206.

Wilk, J.A., Kramer, A.T. & Ashley, M.V. 2009. High variation in clonal vs. sexual reproduction in populations of the wild strawberry, Fragaria virginiana(Rosaceae). Annals of Botany 104: 1413-1419.

 

 

*Corresponding author; email: wangyj@mail.hzau.edu.cn

 

 

previous