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| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:激光輻照作為一種植物誘變育種的物理學方法，具有操作簡單、使用安全等優(yōu)點，目前已經(jīng)被廣泛使用。本試驗從激光輻照誘變育種生菜種子的研究實踐出發(fā),利用半導體綠激光對生菜種子在播種前進行輻照處理，研究不同輻照劑量對生菜種子提取液的紫外吸收光譜、發(fā)芽率、播種成熟后植株的部分生理指標、平均質(zhì)量及平均株高的影響，找到半導體綠激光的一個最佳劑量，使其輻照生菜種子后能產(chǎn)生變異，達到較佳的增產(chǎn)提質(zhì)的目標。結(jié)果表明：不同的輻照劑量對生菜種子的影響不同，經(jīng)適宜劑量的半導體綠激光輻照后，提高了種子的發(fā)芽率及植株體內(nèi)的營養(yǎng)成分，增加了生菜的產(chǎn)量；用劑量為3min的半導體綠激光輻照生菜種子，對生菜的增產(chǎn)提質(zhì)的效果最佳，因此3min為半導體綠激光的輻照生菜種子的一個最佳劑量。 關鍵詞：半導體綠激光；輻照劑量；葉綠素；還原糖；維生素C
ABSTRACT:As a kind of plant mutation breeding method of physics，laser irradiation has the advantages of simple operation，use safety and so on. In the present, it has been widely used. This article starts from the research practice of inducing and breeding lettuce seeds by laser irradiation, irradiating lettuce seeds with semiconductor green laser before planting, researching on the influence of different irradiation dose of lettuce seed extract the ultraviolet absorption spectrum germination rate, seeding after mature, plant physiology index and economic characters after sowing mature, finding a best dose of semiconductor green laser that can make lettuce seeds generate variations and achieve the goal of better increasing and improving the quality after irradiating. The results show that: different irradiation dose has different influence of lettuce; after the appropriate doses of semiconductor green laser irradiation, it improved seed germination rate and pant nutrients in the body，and increased lettuce production ; lettuce production and quality improve after irradiate with irradiation dose of 3min by semiconductor green laser, so 3min is a better irradiating dose of semiconductor green laser when it irradiates lettuce seeds. Key words: semiconductor green laser; radiation dose; chlorophyll; reducing sugar; vitamin C |
