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Purple calyx (Hosta ventricosa) individual size distributions of trust

Author: ZhengHuiYin
Tutor: CaoGuoXing
School: Sichuan Agricultural University
Course: Ecology
Keywords: Purple calyx Sex distribution Reproductive Investment Plant Size trust
CLC: Q948.1
Type: Master's thesis
Year: 2011
Downloads: 27
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Abstract


Sex allocation theory is the study of the evolution of the most important theory, which explained the nature reasonably breeding systems of biological diversity and the formation of selfing and population sex ratio structure, and its assumptions: Since resources are limited, as opposed to the two one or more functional organs compete for limited resources, these organs tradeoff exists between resource inputs (Trade-off), is assigned to a particular sex ratio will function as a resource and change the size of the individual, but the sex distribution and Individual male and female relationship between the size depends on the shape of the curve fit function. In this study, purple calyx (Hosta ventricosa) targeted by two consecutive years of field observations and sampling and analysis of its flowering and fruiting characteristics of propagation into the size of the trust carried out a study on the purple calyx size distribution suitable degree of trust and relationship, in order to further understand the purple calyx selection and adaptation mechanisms of evolution provides a scientific basis. Results: 1) purple calyx flowering in late June-July to late. The level of individual plants bloom last year, the average number of inter difference was not significant (P gt; 0.05), longer flowering time in 2009, 2009 and final flowering spend time in advance lOd respectively over 2010 and 2d, flowering amplitude to 2010 higher. Daily flower show individual plant size increased with the increase of, the relationship between interannual like and spend a significant positive correlation between the number of flowers and interannual no significant interaction. 2) the level of individual plants, the average number of ovules per flower interannual difference was not significant, individual maximum, minimum number of flowers and ovules similar. Number of ovules per flower plants with the increase of body size, the relationship between interannual like and spend a significant positive correlation between the number of flowers and interannual no significant interaction. 3) the level of individual plants, the average number of pollen grains per flower significantly different. 2009 the minimum and maximum number of pollen grains per plant was significantly higher than in 2010. Each individual plant pollen count as the increase of the size, the relationship between interannual like and spend a significant positive correlation between the number of flowers and interannual no significant interaction. 4) the level of each individual plant pollen: ovule ratio between the average annual difference was not significant. 2010 maximum per plant pollen: ovule ratio was significantly higher than in 2009, but the minimum per flower pollen: ovule ratio was lower than in 2009. Each flower pollen: ovule ratio not with the number of individual plant size increases, the relationship between interannual, as related to the total number of flowers was not significant, number of flowers and interannual interaction was not significant. Thus the size of the trust does not exist purple calyx sex distribution. 5) the level of individual plants, the average number of seeds per flower interannual difference was not significant, natural pollination and artificial pollination treatments had no significant difference. The maximum number of individual plants flowering and seed number in interannual and treatments are similar, but the minimum number of flowers and seeds varied significantly. 2009 natural pollination and seed number per flower plant individual size analysis showed that number of seeds per flower plants with the increase of body size, and with the total number of flowers very significant positive correlation. 2010 natural pollination and artificial pollination and the number of flowers per flower seeds relationship analysis showed that number of seeds per flower increases with the number of flowers, flower seeds for each treatment had no significant effect, processing, and spend several interaction was not significant.

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CLC: > Biological Sciences > Botany > Plant ecology and biogeography > Plant ecology
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