两种钙的抑制剂对苹果幼果发育及果肉细胞超微结构的影响

Influence of Two Calcium Inhabitors on Development and Cell Ultrastrc-ture of Young Apple Fruit

以红富士苹果果实为试材,在盛花后30d以内,分3次向幼果中引入EGTA和LaCl3,研究了两种钙的抑制剂对果实细胞超微结构和果实生长的影响。结果表明,EGTA主要是在盛花后20d以前影响果肉细胞形态建成,导致细胞扭曲变形;而La3+是在盛花后20d以后,细胞开始扭曲变形,盛花后10d,质体上开始出现淀粉粒,盛花后30d,质体上淀粉粒明显增多。两种抑制剂对幼果发育有不同程度的影响。LaCl3处理,对幼果发育有抑制作用,其中,花后20d处理,抑制效应最强。花后20dEGTA处理,对果实的横径生长有一定的促进作用,其它两次处理,则表现出对幼果生长的抑制效应。

Influence of two calcium inhabitors on the fruit development and cell ultrastrcture of 'Fuji' apple variety was studied. Within 30 days after full blossom, EGTA and LaCl3 were applied in three times. The results showed that EGTA affected the cell shape, and resulted of cell distort, especially within 20 days of full blossom; After 20 days of full blossom, La3+ began to affect cell shape , but less degree than EGTA; After 10 days of full blossom , starch grain was observed;and the amounts of starch grain was evidently increased after 30 days of full blossom, The treatment of LaCl3 inhabited the development of young fruit, especially the treatment of 20 days after full blossom. EGTA inhabited the development of fruit, apart from the treatment of 20 days after full blossom.