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首页> 外文期刊>Journal of Natural Sciences Research >On r- And K- Selection Theory: Life History Strategy of Emilia Coccinea (Sims) G. Don and Emilia Sonchifolia (Linn.) Dc
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On r- And K- Selection Theory: Life History Strategy of Emilia Coccinea (Sims) G. Don and Emilia Sonchifolia (Linn.) Dc

机译：关于r和K选择理论：艾米莉亚·西西尼（Sims）G. Don和艾米莉亚·索恩奇弗里亚（Linn。）Dc的生活史策略

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摘要

Roots , stems, leaves and flowers of Emilia coccinea (Sims)G. Don and Emilia sonchifolia were harvested, separated and oven-dried at 1100 C for 48 hours and then weighed to determine what proportion of their total biomass was allocated to each of the tissues. E. coccinea allocated 42.65% and E. sonchifolia allocated 36% of their total biomasses to stems respectively. These represent the greatest allocation of their total biomasses allocation. However, E. sonchifolia allocated a relatively greater proportion of its biomass to reproductive structures than E. coccinea. E. coccinea allocated 93.4% of its biomass to vegetative tissues while E. sonchifolia allocated 70.1% to vegetative tissues. The two species allocated about the same percentage of biomass to roots. On the basis of their allocations to vegetative and reproductive tissues E. coccinea can be said to be K- selected with respect to E. sonchifolia which is r- selected. The result of this study supports the r- and K- selection theory. Keywords: life-history strategy, Emilia coccinea, Emilia sonchifolia. r-and K. selection
机译：Emilia coccinea（Sims）的根，茎，叶和花G.收获唐氏和艾米利亚泡桐，分离并在1100°C下烘箱干燥48小时，然后称重以确定将其总生物量的比例分配给每个组织。球果肠球菌分配了42.65％的总生物量，而松果叶菌分配了其总生物量的36％的茎。这些代表了其总生物量分配的最大分配。然而，与大肠杆菌相比，sonchifolia将其生物量中相对较大比例的生物质分配给了生殖结构。大肠杆菌将其生物量的93.4％分配给了营养组织，而Sonchifolia则将70.1％的生物量分配给了营养组织。这两个物种为根分配了大约相同百分比的生物量。根据它们对营养和生殖组织的分配，相对于r-选择的sonchifolia，E.coccinea可以说是K-选择的。这项研究的结果支持r和K选择理论。关键词：生活史策略，艾米利亚球藻，艾米利亚索氏叶。 r和K.选择

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