In „ SEED GERMINATION, THEORY AND PRACTICE“ wurde beschrieben, dass bis zu 100% Samen von Adonis
lerr sind. Die Erfolgsaussichten gehen also gegen Null. 😠 Er bleibt trotzdem noch eine Weile stehen.
„ Adonis divides into two groups. A. aestivalis is an annual with red flowers and a 0-70 germination pattern. The rest are a collection of names that can be treated asa single circumpolar species which has evolved into variants in each geographical .region. All have perennial character, much divided foliage, and large beautiful yellow flowers. More seed of these have been planted without success than any other genus. Over thirty samples of A. amurensis, brevistylis, chrysocyathus, pyrenaica, turkestanica, and vernalis combined have been total failures. The main problem is that a high proportion of normal size seed coats are empty shells. Three samples of A..turkestanica and one sample of A. wolgensis that had been collected in the wild by Josef Halda were found to be 100% empty shells. Samples of A. chrysocyathus collected in the wild bythris Chadwell were largely empty shells. This is not the fault of the collectors as such empty shells are normal in size and resemble normal seeds externally. Seeds of A. vernalis from my own plantings are largely empty shells despite .the most vigorous and persistent hand pollination of the flowers. John Gyer has examined this problem by microscopic examination of pollen and pistils with staining techniques and feels that it is not a self sterility problem but rather genetic defects that lead to defective pollen and pistils. Of six clones of A. amurensis in gardens in Eastern U.S., only the one in the National Arboretum in Washington DC sets viable seeds.“
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Thema: Adonis (Gelesen 69178 mal)
