《Table 2 Effect of different p H values on pollen germination of superior individual L1 of L.caerule

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《Study on Pollination Compatibility of Superior Lonicera caerulea Individuals》

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The medium was 15%sucrose+300 PPM boric acid.

The effect of sucrose concentration on pollen germination of L.caerulea under the p H of 6.0 and 100 PPM boric acid is shown in Table 1.It could be seen from Table 1 that there were significant differences in the germination rate of L.edulis pollen with different sucrose concentrated.In the range of 10%-15%sucrose concentration，no germinated pollen tube could be observed.In the range of 17.5%-30.0%sucrose concentration，the germination rate of L.edulis pollen increased with the increase of sucrose concentration.When sucrose concentration was 27.5%，pollen germination rate was the highest（51.2%）.It can be seen from the table that the pollen germination rate is higher when sucrose concentration is 30%，but the length and growth speed of pollen tube is much lower than that of the former.Therefore，27.5%sucrose concentration is more suitable for pollen germination of L.edulis.Reportedly，the apple，pear，large cherry，plum，jujube and strawberry were in the range of 5%-15%[9]，all lower than the optimal sucrose concentration for the pollen germination of L.caerulea.