Optimal flowering strategy in racemes

总状花序的最佳开花策略

• 批准号: 14540573
• 负责人: SAKAI Satoki
• 金额: $ 2.62万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540573/
• 关键词: plant; raceme; flower; seed; optimal stratesy; trade-off; pollinator; cohort; 繁殖; 資源投資; 花粉; 訪花; 昆虫; 花期; 種子生産; 胚珠; 雄; 雌

I analyzed the nature of size-number trade-off of offspring when multiple cohorts of such offspring are produced sequentially using a fixed amount of reserves. In the model, we incorporated sink-limitation in the resource absorption rate of offspring from the mother tissue and the loss of resources by maintenance respiration. We found that the later the initiation of a cohort, the greater the cost of producing a cohort with the same size and number of offspring. This is due to the loss of resources by maintenance respiration during the period from the beginning of reproduction to the initiation of the cohort. Also, the extra cost increases with an increase in the specific maintenance respiration rate. Thus, resources lost to respiration over time reduces the fitness value of producing late cohorts. Hence, it is advantageous of produce all offspring simultaneously unless there are fitness advantages of producing offspring sequentially which overcome this cost or constraints preventing simultaneous production. Sequentially offspring production evolves if there is a constraint on the number of offspring of each cohort.

我分析了后代的大小数量权衡的性质时，这样的后代的多个队列顺序产生使用固定数量的储备。在该模型中，我们纳入了库限制的资源吸收率的后代从母亲组织和资源的损失维持呼吸。我们发现，一个队列的开始时间越晚，产生一个具有相同大小和数量后代的队列的成本越大。这是由于从繁殖开始到群体开始期间维持呼吸造成的资源损失。此外，额外的成本随着特定维持呼吸速率的增加而增加。因此，随着时间的推移，呼吸损失的资源减少了生产后期队列的适应值。因此，同时产生所有后代是有利的，除非顺序产生后代具有克服这种成本或阻止同时产生的约束的适应性优势。如果对每个队列的后代数量有限制，则后代生产顺序地演变。

项目成果

Sakai, A., Sakai, S.: "Size-dependent ESS sex allocation in wind-pollinated plants"Journal of theoretical Biology. 222. 283-295 (2003)

Sakai，A.，Sakai，S.：“风授粉植物中依赖于大小的 ESS 性别分配”理论生物学杂志。

Kabeya, D., Sakai, A., Matsui, K., Sakai, S.: "Resprouting ability of Quercus crispola seedlings depends on the vegetation cover of their microhabitats"Journal of Plant Research. (印刷中). (2003)

Kabeya, D.、Sakai, A.、Matsui, K.、Sakai, S.：“栎树幼苗的再发芽能力取决于其微生境的植被覆盖”《植物研究杂志》（2003 年）。

Morinag, S.I., Sakai, S.: "Consequences of differences in flowering date in seed production in Heloniopsis orientalis (Liliacene)"American Journal of Botany. 90. 1153-1158 (2003)

Morinag, S.I., Sakai, S.：“Heloniopsis orientalis（百合烯）种子生产中开花日期差异的后果”美国植物学杂志。

Sakai, A., Sakai, S.: "Size-dependent ESS sex allocation in wind-pollinated cosexual plants : fecundity vs. stature effect"Journal of theoretical Biology. (印刷中). (2003)

Sakai，A.，Sakai，S.：“风授粉同性植物中的大小依赖性 ESS 性别分配：繁殖力与身材效应”理论生物学杂志（2003 年）。

Ishii, HS, Sakai, S.: "Effects of display size and position on individual floral longevity in racemes of Narthecium asiaticum (Liliaceae)"Functional Ecology. 15. 396-405 (2002)

Ishii, HS, Sakai, S.：“展示尺寸和位置对 Narthecium asiaticum（百合科）总状花序个体花寿命的影响”功能生态学。