Ábrahám Levente (szerk.): Válogatott tanulmányok IV. - Natura Somogyiensis 15. / Miscellanea 4. (Kaposvár, 2009)
Bódis Judit - Molnár Edit: Himantoglossum adriaticum H. Baumann populáció hosszú távú monitorozása a Keszthelyi-hegységben
Bódis J. & Molnár E.: Himantoglossum adriaticum 33 dity (the number of seedpods produced) was extremely good in 2004, when 14 seedpods per plant were detected. The non-parametric tests prove the differences between the years (Kruskal-Wallis H test = 88.6, df=16, p<0.001). There was no relationship between the number of flowering individuals and the average number of fruits per plant. The fecundity rate greatly varies over the years (Fig. 6B). The best year was 2004, when more than half part of the flowers got fertilised, while the number of flowering individuals was low. In other years, from much larger flower number much fewer seedpods developed. A good example is 2008, when there were twice as many flowers as in 2004, with only half the number of seedpods, so the fertility rate was only 11%. The worst years were 2000 and 2001, when the extremely dry spring damaged much of the inflorescence, so only few plants were able to bloom. The flowers withered very fast in the dry, unusually hot weather, so there was no time for pollination, the fertility rate was approximately 5%. Comparising the coefficients of variation (CV%), among the reproductive traits studied, three ones (except the number of seedpods) have low variability over years (Table 1). In the case of the number of seedpods, however, the variability was of very large extent. There was significant correlation between the height of flowering plants and the number of flowers regarding the whole investigation period (Table 2). The higher the A. 40 35 30 25 j 20 : 15 10 : □ non-fertilized flowers ■ number of seedpods 1992 1994 1996 1998 2000 2002 2004 2006 2008 Years B. 1992 1994 1996 1998 2000 2002 2004 2006 2008 Years Fig. 6: The changes of reproductive traits of Himantoglossum adriaticum between 1992-2008. A. The number of sterile and fertile flowers per plant, B. The rate of fecundity
