Koelewijn Hans Peter
Netherlands Institute of Ecology, Department of Plant Population Biology, Heteren, The Netherlands.
ALTERRA - Wageningen UR, Centre for Ecosystem Studies, PO Box 47, NL-6700 AA Wageningen, The Netherlands.
New Phytol. 2004 Jul;163(1):67-76. doi: 10.1111/j.1469-8137.2004.01078.x. Epub 2004 Apr 13.
• A growth experiment with seedlings from Plantago coronopus, originating from small (0.13 mg) and large (0.20 mg) seeds, was conducted under optimum nutrient conditions to gain insight into the physiological processes associated with the vegetative and generative phase of plant growth. • The relative growth rate (RGR) during the vegetative stage was 300 mg g d and dropped at the initiation of flowering buds to 60 mg g d , a fivefold reduction, while remaining exponential. Investment in reproductive structures had prevalence over vegetative structures during the generative phase of the life cycle. The RGR of reproductive structures was 105 mg g d . • The initiation of flowering was stage-dependent. After the formation of about 14 leaves, plants started to form flowering buds, independent of weight or leaf size. The shoot : root ratio stayed the same during both the vegetative and generative stages. The change from a two-compartment system (shoot and root) to a three-compartment system (shoot, root and reproductive structures) did not change the balance or functional equilibrium between root and shoot. • Seed size effects lasted until the end of the experiment and were reflected in all morphological measurements.
• 对来自冠叶车前的幼苗进行了生长实验，这些幼苗源自小种子（0.13毫克）和大种子（0.20毫克），实验在最佳营养条件下进行，以深入了解与植物生长的营养和生殖阶段相关的生理过程。
• 营养阶段的相对生长速率（RGR）为300毫克·克⁻¹·天⁻¹，在花芽开始形成时降至60毫克·克⁻¹·天⁻¹，降低了五倍，且仍呈指数增长。在生命周期的生殖阶段，对生殖结构的投入优先于营养结构。生殖结构的RGR为105毫克·克⁻¹·天⁻¹。
• 开花的起始具有阶段依赖性。在形成约14片叶子后，植物开始形成花芽，与重量或叶片大小无关。在营养和生殖阶段，地上部分与地下部分的比例保持不变。从两部分系统（地上部分和地下部分）转变为三部分系统（地上部分、地下部分和生殖结构）并未改变地上部分和地下部分之间的平衡或功能平衡。
• 种子大小的影响一直持续到实验结束，并反映在所有形态测量中。
