Sexual Reproduction and Plasticity Analysis of Two Ecotypes Leymus chinensis on Heterogeneity Soil

Abstract:

Characteristics of sexual reproduction of two L. chinensis ecotypes under saline-alkali soil and sandy soil habitats on Songnen plain were studied, such as number of florets, number of grains, seed-setting percentage and the weight of thousand grains. The results showed that number of florets, number of grains, seed-setting percentage and the weight of thousand grains of two L. chinensis ecotypes fluctuated at some range. Variation coefficients of number of florets, number of grains and seed-setting percentage were 34.63%, 79.37% and 87.2% higher, but variation coefficient of the weight of thousand grains was lower. Number of grains and seed-setting percentage of two L. chinensis ecotypes under saline-alkali soil habitat were lower than those under sandy soil habitat. Significance test showed that number of florets and seed-setting percentage of two L. chinensis ecotypes, number of grains of grey-green ecotypes L. chinensis and the weight of thousand grains of yellow-green ecotype L. chinensis between saline-alkali soil habitat and sandy soil habitat were significant or very significant. Number of florets and the weight of thousand grains between two L. chinensis ecotypes under the same habitat were significant or very significant. In results, adaptation of sexual reproduction of two L. chinensis ecotype populations on habitat was stronger. The two ecotypes adopt the same adaptable reproduction strategy. Condition change arose plasticity feedback of characteristics of sexual reproduction. And individual difference in population under the same habitat was results by microhabitat difference.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 450-453
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.450
• Online since: February 2014
• Authors: Chan Zhou, Zhuo Zhang, Shuo Zhang, Yun Fei Yang*
• Keywords: Ecotype, Leymus chinensis, Plasticity, Sexual Reproduction, Songnen Plain

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