草业学报Issue(9)：154-162,9.DOI:10.11686/cyxb2014428
细叶百合低温解除休眠过程中鳞茎细胞淀粉粒及花芽分化的变化
Change in starch grains and flower bud differentiation ofLilium pumilum bulbs dur-ing breaking of dormancy under refrigerated conditions
摘要
Abstract
Changes in starch grains and flower bud differentiation of lily (Lilium pumilum )were studied during the breaking of dormancy at 5℃.Observations of paraffin sections under a microscope revealed that the height of the growth cone and the width of apical buds increased gradually during cold storage.The flower bud differ-entiation process in lily could be divided into four stages:the floral primordium differentiation stage from 0 to 48 days,the outer perianth primordium differentiation stage at 60 days,the inner perianth primordium differ-entiation stage at 72 days,and the stamen and pistil primordium differentiation stage at 84 days.The number of starch grains in apical bud cells gradually decreased as the duration of the cold temperature treatment extend-ed.There were almost no mitotic cells in the plant tissues from 0 to 24 days of cold storage.The number of mitotic cells increased gradually after 36 days in cold storage,reaching 2.6 at 84 days of cold storage.关键词
细叶百合/鳞茎/休眠/淀粉粒/花芽分化Key words
Lilium pumilum/bulbs/dormancy/starch grains/flower bud differentiation引用本文复制引用
刘芳,田忠平,蔡英杰,张雨,周蕴薇..细叶百合低温解除休眠过程中鳞茎细胞淀粉粒及花芽分化的变化[J].草业学报,2015,(9):154-162,9.基金项目
国家自然科学基金（31470698）资助。 （）
