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- Title
Reproductive tillers phenotypic plasticity of Elymus excelsus population at different earring time in Songnen Plain of Northeast China.
- Authors
GAO Yuan; YANG Yun-fei
- Abstract
The reproductive tillers of Elymus excelsus population in Songnen Plain were randomly marked with labels every other four days (five times in total) at early earring stage, and the marked tillers were harvested at dough stage, with the differences of their quantitative characteristics as well as the relationships between the quantitative characteristics and the shortened time of reproductive growth were analyzed. With the shortened time of reproductive growth, the quantitative characteristics of the reproductive tillers decreased gradually, which was not beneficial to the reproductive growth,reproductive allocation, and fruiting of reproductive tillers. The later the earring time, the larger the impact on fruiting and reproductive allocation was. When the reproductive growth time was shortened by 16 days, the grain biomass, setting penentage, reproductive allocation玉, and reproductive allocation 域decreased by 99郾4%, 98郾8%, 54郾3%, and 99郾2%, respectively. With the shortened time of reproductive growth, the tiller height decreased linearly, spike biomass, reproductive allocation 玉, and setting penentage decreased exponentially, tiller biomass, spike length, and floret number decreased powerly, and grain biomass, grain number, and reproductive allocation域decreased logarithmically.
- Subjects
CHINA; BASIN wildrye; REPRODUCTION; PHENOTYPIC plasticity; ROTARY tillers; RHEOLOGY; BIOMASS
- Publication
Yingyong Shengtai Xuebao, 2011, Vol 22, Issue 4, p923
- ISSN
1001-9332
- Publication type
Article