The minute size of orchid seeds have made them difficult to observe,orchid seeds germination and mortality of seedlings in suit difficult to study.Recently,a new technique was described by which orchid seeds were sowe...The minute size of orchid seeds have made them difficult to observe,orchid seeds germination and mortality of seedlings in suit difficult to study.Recently,a new technique was described by which orchid seeds were sowed and retrieved in the field under natural conditions.It is possible to conduct a quantitative study of orchid germination in suit and observe seasonal growth and mortality of seedlings.The technique has also enabled us to bait appropriate fungus from the germinated seeds and young seedlings,which could be beneficial both to the orchid propagation and conservation.For the further studies,the potential issue and application perspective of this technique are also discussed in this text.展开更多
以观赏凤梨品种粉菠萝(Aechm ea fasciate cv.Vanriegata)为材料,探讨了乙烯利处理对其花芽分化的影响。结果表明,乙烯利处理8d后粉菠萝即进入成花决定态;在花芽分化中期乙烯利处理提高了叶片中核酸、蛋白质水平;花芽孕育期间蔗糖水平...以观赏凤梨品种粉菠萝(Aechm ea fasciate cv.Vanriegata)为材料,探讨了乙烯利处理对其花芽分化的影响。结果表明,乙烯利处理8d后粉菠萝即进入成花决定态;在花芽分化中期乙烯利处理提高了叶片中核酸、蛋白质水平;花芽孕育期间蔗糖水平变化与酸性转化酶呈相反趋势,花芽发端前蔗糖水平先降低,后明显地积累,而酸性转化酶活性先升高再降低;同时,乙烯利处理明显提高了还原糖、可溶性总糖等营养物质在叶片中的积累,从而促进了粉菠萝成花。展开更多
文摘The minute size of orchid seeds have made them difficult to observe,orchid seeds germination and mortality of seedlings in suit difficult to study.Recently,a new technique was described by which orchid seeds were sowed and retrieved in the field under natural conditions.It is possible to conduct a quantitative study of orchid germination in suit and observe seasonal growth and mortality of seedlings.The technique has also enabled us to bait appropriate fungus from the germinated seeds and young seedlings,which could be beneficial both to the orchid propagation and conservation.For the further studies,the potential issue and application perspective of this technique are also discussed in this text.
文摘以观赏凤梨品种粉菠萝(Aechm ea fasciate cv.Vanriegata)为材料,探讨了乙烯利处理对其花芽分化的影响。结果表明,乙烯利处理8d后粉菠萝即进入成花决定态;在花芽分化中期乙烯利处理提高了叶片中核酸、蛋白质水平;花芽孕育期间蔗糖水平变化与酸性转化酶呈相反趋势,花芽发端前蔗糖水平先降低,后明显地积累,而酸性转化酶活性先升高再降低;同时,乙烯利处理明显提高了还原糖、可溶性总糖等营养物质在叶片中的积累,从而促进了粉菠萝成花。
