玉米籽粒胚乳细胞增殖及其与淀粉充实的关系  

Endosperm Cell Proliferation and Its Relation to Starch Accumulation in Maize

作　　者：张海艳[1] 

机构地区：[1]青岛农业大学农学与植物保护学院,山东青岛266109

出　　处：《植物生理学通讯》2009年第2期149-152,共4页Plant Physiology Communications

基　　金：青岛农业大学高层次人才启动基金(630629)

摘　　要：用纤维素酶解离胚乳、滤膜法统计玉米胚乳细胞的数目,进一步借助Logistic方程模拟胚乳细胞增殖动态的结果表明,整个灌浆期间胚乳细胞增殖呈现"慢-快-慢"的变化趋势。授粉15d后,不同类型胚乳的细胞数目依序为普通玉米>糯玉米>甜玉米>爆裂玉米;胚乳细胞数目主要取决于细胞的增殖速率,并与淀粉充实和粒重关系密切。胚乳发育前期以胚乳细胞增殖为主,后期以淀粉积累为主。Endosperm cell number was counted and proliferation was simulated by Logistic equation. The results indicated endosperm cell proliferation showed a ＂slow-fast-slow＂ trend. Endosperm cell number was in the order of normal corn〉waxy corn〉sweet corn〉pop corn after 15 days of pollination. Endosperm cell number depended on proliferation rate mainly and was closely related to starch accumulation and grain weight. At early age of endosperm development endosperm cell proliferation was primary, and then starch accumulation was primary at late age.

关 键 词：玉米 胚乳细胞增殖 淀粉 粒重 

分 类 号：S513[农业科学—作物学]