Labor-saving seed production of pollen-free Japanese cedar using spray pollination

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  • 斎藤 真己
    Toyama Prefectural Agricultural, Forestry & Fishieries Research Center, Forestry Research Institute

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  • 溶液受粉を用いた無花粉スギの省力的な種子生産
  • ヨウエキ ジュフン オ モチイタ ムカフン スギ ノ ショウリョクテキ ナ シュシ セイサン

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Abstract

<p>As part of the efforts to develop a labor-saving artificial pollination technic for producing male sterile Japanese cedar, effectiveness of spray pollination in which pollen in a suspension is sprayed onto female flowers was examined. A 10% sucrose aqueous solution was used as an extender and a pollination solution was adjusted into a weight ratio of 20:1. The pollination solution was sprayed onto the female flowers when they were in bloom using a commercially available sprayer. The resulting cone size and seed germination rate were similar to those obtained with Supplemental Mass Pollination（ SMP） using a conventional pollination gun. It was also found that the work hours involved were about 25% of that for SMP. The use of this labor-saving artificial pollination technology makes it possible to reduce the amount of pollen used and the number of work hours involved.</p>

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