The biomass of ramet module on Phragmites communis population were increased bypower function with the ramet biomass increased in different stands. It was between 69.95% and 97.46% that definitive coefficient R2 of fitted equation about biomass of stems,and it was between 69.62% and 98.51% about biomass of leaves.
The ecological plasticities of ramets height were far smaller than biomass within stands and among stands,the same as those within stages and among stages. The sensitivity degree in respond to environment changed of the ramet biomass were far higher than height in Phragmites communis population.
The variations of ramet biomass allocation under different habit conditions indicated the important strategies in growth regulation and biomass allocation,i.
The results of heterogeneous water on linked two-ramets in Buchloё dactyloides indicate that younger daughter ramets gain gift significantly from elder daughter ramets about ramet biomass,leaf length,plant height,1st stolon length,1st stolon node number,1st stolon biomass.
(2) The biomass allocations of ramets from 1 to 5 a are 31.94%, 37.01%, 13.30%, 16.24% and 1.51% respectively, while the allocations among culm, branch, leaf, root, rhizome, bamboo stump are 42.72%, 5.82%, 6.52%, 6.70%, 27.13% and 11.11% respectively;
In natural habitats, the number of node, ramet height, the biomass of spacer and the biomass of ramet of stolon have significant variance in 2003 and in 2004(P<0.01), but the spacer length has no variance in 2003 and in 2004(P>0.05), the biomass of ramet and the biomass of spacer have approximately the same ratios in total biomass.
From the flowering stage to the ripening stage, the change ranges were the consistency on the height and biomass of the reproductive ramets, which increased the average of 211% and 207% respectively;
Photosynthesis, above-ground morphology and ramet biomass accumulation (relative growth rate: RGR of a corm for a full leaf life-span) were measured on plants raised under three light treatments combined with two soil water conditions.
As predicted, severing significantly decreased total biomass and per capita growth rate in year one and individual ramet biomass both in year one and the year after severing stopped.