稲花粉の人工発芽 : (第2報) 花粉管の伸び方と, その品種間差異の一例

概要

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The authors examined the growth of pollen tube and its varietal differences of rice plants, using Japanese and foreign varieties. The germination media for pollen were made of 5% potato starch paste containing 15% sucrose. The main results were as follows: 1) In all tests, it was found that 50〜100% of pollen used showed their germination. 2) The germination of pollen grain begun immediately after it had been set on the medium and this initial rapid growth of pollen-tube continued for 10〜20 minutes, after that the growth became very slow and ceased after 20〜30 minutes. And at last the length of pollen tube was measured to be 50〜110μ. 3) Comparing Japanese varieties with foreign ones, though no difference was found in the speed of the initial growth, the cease of pollen-tube elongation was delayed longer by 5〜10 minutes in foreign varieties. 4) The length of pollen-tube of Japanese varieties were observed to be somewhat shoter (50〜80μ) that of foreign ones (70〜110μ), and this difference was proved to be significant, statistically.
日本作物学会の論文
1955-04-01